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1.


   
    An update on inert anodes for aluminium electrolysis / A. S. Yasinskiy, S. K. Padamata, P. V. Polyakov, A. V. Shabanov // Non-Ferrous Met. - 2020. - Vol. 48, Is. 1. - P. 15-23, DOI 10.17580/nfm.2020.01.03. - Cited References: 62. - The work is performed as a part of the state assignment for the science of Siberian Federal University, project number FSRZ-2020-0013. Use of equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” is acknowledged . - ISSN 2072-0807
Кл.слова (ненормированные):
Inert anodes -- aluminium electrolysis -- CO2 emission -- metallic anode -- cermet anode -- ceramic anode -- oxygenevolving electrode -- fluoride melt -- corrosion -- oxidation -- low-temperature electrolyte -- Hall-Heroult cell
Аннотация: This update includes the literature related to the inert anodes which were published in the past decade. The metallic anodes are widely regarded as promising candidates to replace the carbon anodes due to its attractive properties like good electrical conductivity, easy to manufacture and high resistance to high thermal shocks. The metals have been tested in pure state and alloy (binary, ternary) form. The oxide scale formed on the anode surface acts as a barrier between the electrolyte and the anode, which protects the anode from being dissolved. The layer of molten fluorides is formed between the scale and the metal anode after a certain time of polarization, and the oxide scale acts as a bipolar electrode. Metal like Cu is reduced at the internal side of the scale. This paper elaborates the effects of various parameters on the performance of the anode. Cu-based alloys (Cu – Ni – Fe and Cu – Al) have shown promising results and could perform well in low-temperature electrolytes. It has been well established that the Cu content in Cu – Ni – Fe and Cu – Al alloys plays a major role in the metal dissolution as the CuO/Cu2O scales formed on the outer layer act as a sacrificial one. The corrosion rate of an anode can be reduced by decreasing the operating temperature, which is possible by using the KF – AlF3 melts. The use of suspensions can increase the purity of the produced metal by stop-ping the anode products to come in contact with cathode metal. Many industries including RUSAL and ELYSIS are still conducting a considerable amount of research to develop an inert anode and are expecting to have a carbon-free cell in the nearest future.

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Держатели документа:
Laboratory of Physics and Chemistry of Metallurgical Processes and Materials, Siberian Federal University, Krasnoyarsk, Russian Federation
Laboratory of Molecular Spectroscopy, Krasnoyarsk Science Center SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yasinskiy, A. S.; Padamata, S. K.; Polyakov, P. V.; Shabanov, A. V.; Шабанов, Александр Васильевич
}
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2.


    MYAGKOV, V. G.
    AUTO-WAVE PROCESS OF OXIDATION OF IRON FILMS / V. G. MYAGKOV, G. I. FROLOV // Pisma Zhurnal Tek. Fiz. - 1990. - Vol. 16, Is. 23. - P. 1-4. - Cited References: 5 . - ISSN 0320-0116
РУБ Physics, Applied


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Доп.точки доступа:
FROLOV, G. I.
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3.


   
    Bi2(Sn0.95Cr0.05)2O7: Structure, IR spectra, and dielectric properties / S. S. Aplesnin [et al.] // Ceram. Int. - 2016. - Vol. 42, Is. 4. - P. 5177-5183, DOI 10.1016/j.ceramint.2015.12.040. - Cited References: 45. - This work was supported by the Russian Foundation for Basic Research Projects no. 15-42-04099 r_siberia_a, Siberian Branch of Science and NAS of Belarus “Electronic and magnetic phase transitions in materials with magnetoelectric affect” and government work no. 114090470016. . - ISSN 0272-8842
РУБ Materials Science, Ceramics
Рубрики:
BISMUTH PYROSTANNATE
   PYROCHLORE STRUCTURE

   MAGNETIC-PROPERTIES

   PARTIAL OXIDATION

   HIGH-TEMPERATURE

   X-RAY

   Bi2Sn2O7

   SUBSTITUTION

   CATALYSTS

   DIFFRACTION

Кл.слова (ненормированные):
Bismuth pyrostannate -- Infrared absorption spectra -- Structural transition -- Permittivity -- Debye model
Аннотация: Infrared absorption spectra of the bismuth pyrostannate Bi2(Sn0.95Cr0.05)2O7 were investigated in the frequency range 350-1100 cm-1 at temperatures of 110-525 K. Four frequency regions with split absorption lines are distinguished. Softening of frequencies at the structural transitions was observed. The maxima of permittivity measured in the frequency range 1-200 kHz at temperatures 100-400 K were determined. It was found that the magnetic susceptibility changes its sign in the low-temperature region. The correlation between anomalies in the magnetic susceptibility, permittivity, and absorption line intensity was established. Softening of frequencies is explained by the variation in the coefficient of thermal expansion of the lattice. The temperature behavior of permittivity is described using the Debye model. © 2015 Elsevier Ltd and Techna Group S.r.l.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Akademgorodok 50, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Shestakov, N. P.; Шестаков, Николай Петрович
}
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4.


   
    Chemistry of vinylidene complexes—XXVII—new µ-vinylidene MnPt complexes with platinum-coordinated 1-adamantyl isocyanide ligand: spectroscopic, structural and electrochemical study / V. V. Verpekin, O. S. Chudin, A. A. Kondrasenko [et al.] // Transition Met. Chem. - 2022. - Vol. 47. Is. 7-8. - P. 283-292, DOI 10.1007/s11243-022-00511-w. - Cited References: 46. - This work was conducted within the framework of the budget project 0287–2021-0012 for Institute of Chemistry and Chemical Technology SB RAS . - ISSN 0340-4285
Кл.слова (ненормированные):
Binary alloys -- Cyanides -- Ligands -- Manganese alloys -- Nuclear magnetic resonance spectroscopy -- Platinum compounds -- Redox reactions -- Chemical oxidation -- Electrochemical studies -- Isocyanide ligands -- Redox property -- Spectroscopic studies -- Structural studies -- Vinylidene complexes -- X-ray diffraction studies -- Platinum alloys
Аннотация: New binuclear MnPt µ-vinylidene complexes Cp(CO)2Mn(µ-C=CHPh)Pt(CN–Ad)(L) [L=PPh3 (1a), P(OPri)3 (2a)] bearing a terminal platinum-coordinated 1-adamantyl isocyanide ligand were prepared by the treatment of Cp(CO)2Mn(µ-C=CHPh)Pt(CO)(L) [L=PPh3 (1b), P(OPri)3 (2b)] with CN-Ad. At the same time the reaction between Cp(CO)2Mn(µ-C=CHPh)Pt(L)2 [L=PPh3 (1c), P(OPri)3 (2c)] and CN-Ad did not proceed. The new complexes were characterized by IR and 1H, 13C, 31P NMR spectroscopy. The molecular structure of Cp(CO)2Mn(µ-C=CHPh)Pt(CN–Ad)[P(OPri)3] (2a) was determined by an X-ray diffraction study. The redox properties of the new complexes and their reactions of chemical oxidation were studied. An influence of the platinum-coordinated 1-adamantyl isocyanide ligand on the properties of the synthesized µ-vinylidene compounds 1a and 2a was revealed.

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Держатели документа:
Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok, 50-24, Krasnoyarsk, 660036, Russian Federation
Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok, 50-38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny Prospect, 79, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Verpekin, V. V.; Chudin, O. S.; Kondrasenko, A. A.; Burmakina, G. V.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Zimonin, D. V.; Rubaylo, A. I.
}
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5.


   
    Crystal structure and magnetic properties of Mn substituted ludwigite Co3O2BO3 / Yu. V. Knyazev [et al.] // J. Magn. Magn. Mater. - 2012. - Vol. 324, Is. 6. - P. 923-927, DOI 10.1016/j.jmmm.2011.07.044. - Cited References: 15. - The study was supported by the Russian Foundation for Basic Research (Project no. 09-02-00171-a), the Federal Agency for Science and Innovation (Rosnauka) (Project no. MK-5632.2010.2), the Physical Division of the Russian Academy of Science, the program "Strongly Correlated Electrons", Project 2.3.1. . - ISSN 0304-8853
   Перевод заглавия: Кристаллическая структура и магнитные свойства Mn-замещенного людвигита Co3O2BO3
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
BOND VALENT SUMS
   COORDINATION CHEMISTRY

   OXIDATION -STATE

   O BONDS

   COMPLEXES

   MANGANESE

   COBALT

Кл.слова (ненормированные):
Transition metal oxyborate -- Distinct crystallographic position -- Spin glass magnetic ordering
Аннотация: The needle shape single crystals Co3−x MnxO2BO3 with ludwigite structure have been prepared. According to the X-ray diffraction data the preferable character of distinct crystallographic positions occupation by Mn ions is established. Magnetization field and temperature dependencies are measured. Paramagnetic Curie temperature value Θ=−100 K points out the predominance of antiferromagnetic interactions. Spin-glass magnetic ordering takes the onset at TN=41 K. The crystallographic and magnetic properties of Co3O2BO3:Mn are compared with the same for the isostructural analogs Co3O2BO3 and CoO2BO3:Fe.

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Доп.точки доступа:
Knyazev, Yu.V.; Князев, Юрий Владимирович; Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Platunov, M. S.; Платунов, Михаил Сергеевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Yurkin, G. Yu.; Юркин, Глеб Юрьевич
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6.


   
    Decoration of carbon nanomaterial powders with dispersed platinum metal particles / V. G. Isakova [et al.] // Russ. J. Appl. Chem. - 2018. - Vol. 91, Is. 7. - P. 1209-1216, DOI 10.1134/S1070427218070212. - Cited References: 22. - The study was performed with the support and equipment of the Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. . - ISSN 1070-4272. - ISSN 1608-3296
РУБ Chemistry, Applied
Рубрики:
NANOPARTICLES
   PALLADIUM

   FULLERENE

   ELECTRODE

   NANOTUBES

   OXIDATION

Кл.слова (ненормированные):
carbon nanomaterials -- platinum metal nanoparticles -- in situ one-step method
Аннотация: Carbon nanomaterials (fullerite, detonation nanodiamonds, Taunit, fullerenol, fullerene-containing black) were decorated with platinum group metal nanoparticles in situ in one step by low-temperature combustion (~250–270°С) of a powdered mixture of platinum metal acetylacetonate [Pt-M(асас)n, Pt-М = Pt(II), Pd(II), Rh(III), Ir(III), acac = CH3COCHCOCH3, n is the oxidation state of Pt-М] with carbon nanomaterials in air. As shown by thermal analysis, the process is based on thermal oxidative degradation of the organometallic complex, catalyzed by carbon nanomaterials, with oxidation (combustion) of the organic moiety and release of the metal into the condensed phase. The thermal process in an open system occurs in the glowing mode (210–250°С); the size of the nanoparticles formed is 7–30 nm. Under the conditions restricting the air access to the reaction mixture and free outflow of gaseous products formed by oxidation of acac ligands, the nanoparticle size decreases to 3–10 nm. The particle size depends on the metal amount in the initial powder mixture and on the support morphology.

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Публикация на русском языке Декорирование порошков углеродных наноматериалов дисперсными частицами платиновых металлов [Текст] : статья / В. Г. Исакова [и др.] // Журн. прикл. химии. - 2018. - Т. 91 № 7. - С. 1040-1048

Держатели документа:
Russian Acad Sci, Kirenksy Inst Phys, Separate Dept, Fed Res Ctr,Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Isakova, V. G.; Исакова, Виктория Гавриловна; Osipova, I. V.; Осипова, Ирина Владимировна; Dudnik, A. I.; Дудник, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zharikova, N. V.; Nemtsev, I. V.; Volochaev, M. N.; Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
}
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7.


   
    Effect of calcination temperature on activity of Fe2O3-Al2O3 nanocomposite catalysts in CO oxidation / A. M. Kremneva, A. V. Fedorov, O. A. Bulavchenko [et al.] // Catal. Lett. - 2020. - Vol. 150. - P. 3377-3385, DOI 10.1007/s10562-020-03250-8. - Cited References: 31. - This work was supported by the Russian Science Foundation (Grant No. 17-73-20157). The experiments were performed using facilities of the shared research center "National center of investigation of catalysts" at Boreskov Institute of Catalysis. The authors thank A.Yu. Gladky for the TPR measurements and Z.S. Vinokurov for the XRD measurements. . - ISSN 1011-372X. - ISSN 1572-879X
РУБ Chemistry, Physical
Рубрики:
MOSSBAUER
   SPECTROSCOPY

   CHEMISTRY

   IRON

   XPS

   ADSORPTION

   OXYGEN

   FE

Кл.слова (ненормированные):
Environmental catalysis -- Nanostructure -- Gasification -- Oxidation -- Mossbauer spectroscopy
Аннотация: Nanocomposite Fe–Al oxide catalysts were prepared by the melting of iron and aluminum nitrates with the subsequent calcination in air at different temperatures. It was found that the catalysts calcined at 450 °C are more active in the oxidation of CO than the catalysts calcined at 700 °C. X-ray diffraction and X-ray photoelectron spectroscopy showed that all the catalysts consist of hematite, α-Fe2O3 nanoparticles, and Al2O3 in an amorphous state. Iron oxide is the active component, which provides the oxidation of CO, while alumina is a texture promoter. The increase in the calcination temperature leads to a minor increase in the average size of hematite nanoparticles and an insignificant decrease in the specific surface area. Kinetic measurements showed that the oxidation of CO over the Fe–Al catalysts calcined at 450 and 700 °C proceeds with the activation energy of 61–69 and 91 kJ/mol, respectively. This means that the low-temperature and high-temperature catalysts contain different active species. Temperature-programmed reduction with CO indicated that the decrease in the calcination temperature improves the reducibility of the Fe-Al nanocomposites. According to 57Fe Mössbauer spectroscopy, the low-temperature catalysts contain hydrated iron oxides (acagenite and ferrihydrite) and a significant amount of highly defective hematite, which is absent in the high-temperature catalyst. These species can provide the enhanced activity of the low-temperature catalysts in the oxidation of CO.

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Держатели документа:
Boreskov Inst Catalysis, Novosibirsk 630090, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kremneva, A. M.; Fedorov, A. V.; Bulavchenko, O. A.; Knyazev, Yu. V.; Князев, Юрий Владимирович; Saraev, A. A.; Yakovlev, V. A.; Kaichev, V. V.; Russian Science FoundationRussian Science Foundation (RSF) [17-73-20157]; National center of investigation of catalysts" at Boreskov Institute of Catalysis
}
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8.


   
    Effect of exposure to optical radiation and temperature on the electrical and optical properties of In2O3 films produced by autowave oxidation / I. A. Tambasov [et al.] // Semiconductors. - 2014. - Vol. 48, Is. 2. - P. 207-211, DOI 10.1134/S1063782614020286. - Cited References: 42. - This study was supported by the Ministry of Education and Science of the Russian Federation, Federal Targeted Program "Research and Development in Priority Fields of Development of the Science and Technology Complex of Russia for 2007-2013", state contract no. 14.513.11.0023. . - ISSN 1063-7826. - ISSN 1090-6479
РУБ Physics, Condensed Matter
Рубрики:
GAS SENSOR RESPONSE
   INDIUM OXIDE-FILMS

   THIN-FILMS

   HIGH-PERFORMANCE

   TIN OXIDE

   TRANSPARENT CONDUCTORS

   SUBSTRATE-TEMPERATURE

   ROOM-TEMPERATURE

   TRANSISTORS

   PHOTOREDUCTION

Аннотация: Indium-oxide films are synthesized by the autowave-oxidation reaction. It is shown that, upon exposure to optical radiation, the resistance of the films sharply decreases and the maximal relative change in the resistance is 52% at room temperature. Two resistance relaxation rates after termination of the irradiation, 15 Omega s(-1) during the first 30 s and 7 Omega s(-1) over the remaining time, are determined. The data of infrared spectroscopy of the films show that exposure to optical radiation induces a 2.4% decrease in the transmittance at a wavelength of 6.3 mu m. It is found that, after termination of the irradiation, the transmittance gradually increases with a rate of 0.006% s(-1). It is suggested that photoreduction is the dominant mechanism responsible for changes in the electrical and optical properties of the In2O3 films.

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Публикация на русском языке Влияние фотооблучения и температуры на электрические и оптические свойства пленок In2O3, полученных автоволновым окислением [Текст] / И. А. Тамбасов [и др.] // Физ. и техника полупроводников : Санкт-Петербургская издательская фирма "Наука" РАН, 2014. - Т. 48 Вып. 2. - С. 220-224

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660037, Russia
Joint Stock Co Academician MF Reshetnev Informat, Zheleznogorsk 662972, Russia

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Myagkov, V. G.; Мягков, Виктор Григорьевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Yozhikova, E. V.; Maksimov, I. A.; Ivanov, V. V.; Ministry of Education and Science of the Russian Federation [14.513.11.0023]
}
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9.


    Fransson, J.
    Effects of non-orthogonality and electron correlations on the time-dependent current through quantum dots / J. . Fransson, O. . Eriksson, I. . Sandalov // Phys. Rev. B. - 2002. - Vol. 66, Is. 19. - Ст. 195319, DOI 10.1103/PhysRevB.66.195319. - Cited References: 46 . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
GREENS-FUNCTION APPROACH
   TUNNEL-JUNCTIONS

   LOCAL OXIDATION

   ANDERSON MODEL

   TRANSPORT

   NONORTHOGONALITY

   CONDUCTANCE

   EQUILIBRIUM

   TRANSISTOR

   IMPURITY

Аннотация: Three issues are analyzed in the physics of time-dependent tunneling current through a quantum dot with strongly correlated electrons coupled to two external contact leads: (i) nonorthogonality of the states of electrons in the leads and in the quantum dot, (ii) non-Fermi statistics of the excitations in the quantum dot, and iii) kinematic shift of the quantum dot levels. The contributions from nonorthogonality effectively decrease the mixing interaction between the leads and the quantum dot and the width of the quantum dot level whereas the Gibbs statistics slightly changes the spectral weights of quantum dot levels, and decreases the widths, but does not introduce drastical changes to the current. The kinematic interactions are taken into account within the loop correction. For the case of block signal, the time-dependent current shows oscillations starting at the onset and termination of the bias voltage pulse.

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Держатели документа:
Univ Uppsala, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Eriksson, O.; Sandalov, I.
}
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10.


    Fransson, J.
    Effects of nonorthogonality in the time-dependent current through tunnel junctions / J. . Fransson, O. . Eriksson, I. . Sandalov // Phys. Rev. B. - 2001. - Vol. 64, Is. 15. - Ст. 153403, DOI 10.1103/PhysRevB.64.153403. - Cited References: 20 . - ISSN 0163-1829
РУБ Physics, Condensed Matter
Рубрики:
LOCAL OXIDATION
   TRANSPORT

   DEVICES

Аннотация: A theoretical technique which allows one to include contributions from nonorthogonality of the electron states in the leads connected to a tunneling junction is derived. The theory is applied to a single-barrier, tunneling structure and a simple expression for the time-dependent tunneling current is derived showing explicit dependence of the overlap. The overlap proves to be necessary for a better quantitative description of the tunneling current, and our theory reproduces experimental results substantially better compared to standard approaches.

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Держатели документа:
Univ Uppsala, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
Linkoping Univ, Dept Phys, S-58183 Linkoping, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Eriksson, O.; Sandalov, I. S.; Сандалов, Игорь Семёнович
}
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11.


   
    Features of phase equilibria and properties of phases in the Sb-Sm-Se system / M. A. Shtykova, V. P. Vorob'eva, P. P. Fedorov [et al.] // J. Solid State Chem. - 2022. - Vol. 316. - Ст. 123573, DOI 10.1016/j.jssc.2022.123573. - Cited References: 101. - This research was funded by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center's project No. 89-DON (3) . - ISSN 0022-4596
   Перевод заглавия: Особенности фазовых равновесий и свойства фаз в системе Sb-Sm-Se
Кл.слова (ненормированные):
Continuous solid solutions -- Electronic structure -- Multi band -- Optical spectroscopy -- Oxidation state -- Peritectic points -- Phase equilibriums -- Phase properties -- Sb components -- Tie-line -- Energy gap
Аннотация: The purpose of the paper is to establish the position of the tie-lines in the Sb-Sm-Se system at 450 ​°C and 620 ​°C, to determine the optical band gap of the phases. The Sb component is in equilibrium with the γ-Sm2Se3-X-Sm3Se4 (ST Th3P4) solid solution region with α-Sm2Se3. A continuous solid solution forms between the SmSb and SmSe (ST NaCl) phases, with which the Sm3Se4 and Sm4Sb3 phases are in equilibrium. The SmSb-Sm3Se4, Sm3Se4-SmSb2, SmSe-Sm3Sb2 phases are also in equilibrium. In the Sb–Sm2Se3–Se system at 450°С, the tie-line passes between the Sb2Se3–Sm2Se3, Sb2Se3-SmSe1.9 phases. In the Sb–Se system based on Sb2Se3, a solid solution of the subtraction type Sb2-X□XSe3 (X ​= ​0–0.04) is formed. In the Sb-Sm-Se system, there is a solid solution of the substitution type along the cuts from Sb2Se3 to the Sm2Se3 (7 ​mol. % Sm2Se3), SmSe1.9 (4 ​mol. % SmSe1.9) phases. The extreme compositions of solid solutions have a peritectic point. Due to the change in the position of the tie-lines in the Sb–Sm2Se3–Se system at 620 ​°C, additional phases appear in the equilibrium samples from the Sb2Se3–Sm2Se3 section (annealing at 450 ​°C) when heated above 620 ​°C: Sb, SmSe1.9. The optical band gap of the phases is: Sb2-xSmxSe3 solid solution 1.17–1.19 ​eV, α-Sm2Se3 1.62 ​eV. Optical properties of incommensurate SmSe1.9 crystal that were investigated for the first time for this class of crystals indicate complex electronic structure that can be characterized as a multi band gap one, with at least two values of the band gap, 1.08 and 1.68 ​eV. Using optical spectroscopy, Sm ions in SmSe1.9 are proved to be predominantly in 3+ oxidation state. Previously, the formation of ternary compounds in the system was reported in the literature. Carefully conducted research allows us to assert their absence.

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Держатели документа:
Tyumen State University, Volodarsky Str. 6, Tyumen, 625003, Russian Federation
Institute of Physical Materials Science SB RAS, Sakhyanova Str. 6, Ulan-Ude, 670047, Russian Federation
Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Akademgorodok Str. 50, Building 38660036, Russian Federation
Siberian Federal University, Krasnoyarsk, Svobodnyj Av. 79660079, Russian Federation
Department of Physical and Applied Chemistry, Kurgan State University, Sovetskaya Str. 63/4, Kurgan640020, Russian Federation
Urals Scientific-Research Institute of Chemicals with Experimental Plant, Montazhnikov Str. 9, Yekaterinburg, 620050, Russian Federation
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Pervomaiskaya Str. 91, Yekaterinburg, 620990, Russian Federation

Доп.точки доступа:
Shtykova, M. A.; Vorob'eva, V. P.; Fedorov, P. P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Elyshev, A. V.; Palamarchuk, I. V.; Yurev, I. O.; Ivanov, A. V.; Habibullayev, N. N.; Abulkhaev, M. U.; Andreev, O. V.
}
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12.


   
    High performance hybrid rGO/ Ag quasi-periodic mesh transparent electrodes for flexible electrochromic devices / A. S. Voronin [et al.] // Appl. Surf. Sci. - 2016. - Vol. 364. - P. 931–937, DOI 10.1016/j.apsusc.2015.12.182. - Cited References: 31 . - ISSN 0169-4332. - ISSN 1873-5584
РУБ Chemistry, Physical + Materials Science, Coatings & Films + Physics, Applied + Physics, Condensed Matter
Рубрики:
NANOWIRE NETWORKS
   GRAPHENE FILMS

   OXIDE

   OXIDATION

   HEATERS

Кл.слова (ненормированные):
Quasi-periodic mesh transparent electrode self-organized template -- Reduced graphene oxide (rGO) -- Flexible electrochromic device
Аннотация: A possibility of creating a stable hybrid coating based on the hybrid of a reduced graphene oxide (rGO)/ Ag quasi-periodic mesh (q-mesh) coating has been demonstrated. The main advantages of the suggested method are the low cost of the processes and the technology scalability. The Ag q-mesh coating is formed by means of the magnetron sputtering of silver on the original template obtained as a result of quasi-periodic cracking of a silica film. The protective rGO film is formed by low temperature reduction of a graphene oxide (GO) film, applied by the spray-deposition in the solution of NaBH4. The coatings have low sheet resistance (12.3 Ω/sq) and high optical transparency (82.2%). The hybrid coating are characterized by high chemical stability, as well as they show high stability to deformation impacts. High performance of the hybrid coatings as electrodes in the sandwich-system «electrode – electrochromic composition – electrode» has been demonstrated. The hybrid electrodes allow the electrochromic sandwich to function without any visible degradation for a long time, while an unprotected mesh electrode does not allow performing even a single switching cycle.

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Доп.точки доступа:
Voronin, A. S.; Ivanchenko, F. S.; Simunin, M. M.; Shiverskiy, A. V.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Nemtsev, I. V.; Fadeev, Y. V.; Karpova, D. V.; Khartov, S. V.
}
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13.


   
    High-temperature oxidation of europium (II) sulfide / Y. G. Denisenko [et al.] // J. Ind. Eng. Chem. - 2019. - Vol. 79. - P. 62-70, DOI 10.1016/j.jiec.2019.05.006. - Cited References: 68. - The authors are grateful for the support from RFBR ( 18-02-00754 , 18-08-00985 , and 18-32-20011 ). This study was also supported by the Russian Science Foundation (project 19-42-02003 , in part of conceptualization). . - ISSN 1226-086X
   Перевод заглавия: Высокотемпературное окисление сульфида европия (II)
Кл.слова (ненормированные):
Sulfur-containing europium compounds -- High-temperature oxidation -- Thermal analysis -- X-ray diffraction -- Crystal structure -- Photoluminescence
Аннотация: The process of high-temperature oxidation of EuS in the air was explored in the temperature range of 500–1000 °C. The oxidation reaction enthalpy was determined (ΔH0exp = −1718.5 kJ/mol). The study of oxidation products allowed to establish the mechanism of EuS oxidation with oxygen. At 500–600 °C, EuS is oxidized to a mixture of Eu3+-containing compounds (Eu3S4, Eu2O2S). In the range of 700–1000 °C, only europium oxysulfate Eu2O2SO4 is formed. The structure refinement for Eu2O2SO4 was performed by the Rietveld method. The luminescence intensity of europium oxysulfate Eu2O2SO4 with characteristic 4f-4f transitions from the 5D0 state was investigated as a function of oxidation temperature.

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Держатели документа:
Department of Inorganic and Physical Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation
Department of General and Special Chemistry, Industrial University of Tyumen, Tyumen, 625000, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, 634050, Russian Federation
Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russian Federation
Laboratory of Chemistry of Rare Platinum Metals, Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, 630090, Russian Federation
Department of General Chemistry, Northern Trans-Ural Agricultural University, Tyumen, 625003, Russian Federation

Доп.точки доступа:
Denisenko, Y. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Atuchin, V. V.; Azarapin, N. O.; Plyusnin, P. E.; Sal'nikova, E. I.; Andreev, O. V.
}
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14.


   
    In Situ FMR Study of the Selective H2S-Oxidation Stability of ε-Fe2O3/SiO2 Catalysts / S. S. Yakushkin [et al.] // Appl. Magn. Reson. - 2019. - Vol. 50, Is. 5. - P. 725-733, DOI 10.1007/s00723-019-1109-3. - Cited References:32. - This work was supported by the Russian Science Foundation, project no. 17-12-01111. . - ISSN 0937-9347. - ISSN 1613-7507
РУБ Physics, Atomic, Molecular & Chemical + Spectroscopy
Рубрики:
HYDROGEN-SULFIDE
   CALCINATION TEMPERATURE

   OXIDATION

   PHASE

   BED

Аннотация: The stability of a catalyst for partial H2S oxidation has been studied by the ferromagnetic resonance (FMR) technique combined with transmission electron microscopy, X-ray diffraction, Mössbauer spectroscopy, and magnetostatic investigations. The ε-Fe2O3 iron oxide nanoparticles supported on silica have been examined for their stability under the selective H2S oxidation conditions. The combination of the physicochemical methods has been used to study the state of reacted catalysts. The ε-Fe2O3 phase has been found to remain stable under the selective H2S oxidation conditions at temperatures up to 300 °C. The active phase state during the catalytic reaction has been explored using in situ FMR experiments. It has been established that the ε-Fe2O3 nanoparticles retain their structure and magnetic properties in the presence of H2S at high temperatures. During the in situ FMR experiments, the ε-Fe2O3 sulfidation process has been studied.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Yakushkin, S. S.; Bukhtiyarova, G. A.; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Balaev, D. A.; Балаев, Дмитрий Александрович; Martyanov, O. N.; Russian Science Foundation [17-12-01111]
}
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15.


   
    Kinetics and mechanism of BaLaCuS3 oxidation / N. O. Azarapin, N. A. Khritokhin, V. V. Atuchin [et al.] // Crystals. - 2023. - Vol. 13, Is. 6. - Ст. 903, DOI 10.3390/cryst13060903. - Cited References: 65. - The work was partially carried out using the resources of the Research Resource Center “Natural Resources Management and Physico-Chemical Research” (Tyumen University) with financial support from the Ministry of Science and Higher Education of the Russian Federation (contract No. 05.594.21.0019., Unique identification number RFMEFI59420X0019). M.S. Molokeev was supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3). - The authors would like to thank the staff of the Engineering Center of the Tyumen State University (special Alexej V. Matigorov) for their help in carrying out physical and chemical tests . - ISSN 2073-4352
   Перевод заглавия: Кинетика и механизм окисления BaLaCuS3
Кл.слова (ненормированные):
BaLaCuS3 -- complex sulfide -- oxidation -- kinetic -- XRD analysis
Аннотация: The oxidation reactions of BaLaCuS3 in the artificial air atmosphere were studied at different heating rates in the temperature range of 50–1200 °C. The oxidation stages were determined by DSC-TG, XRD and IR–vis methods. The kinetic characteristics of the proceeding reactions were obtained with the use of the Kissinger model in a linearized form. Compound BaLaCuS3 was stable in the air up to 280 °C. Upon further heating up to 1200 °C, this complex sulfide underwent three main oxidation stages. The first stage is the formation of BaSO4 and CuLaS2. The second stage is the oxidation of CuLaS2 to La2O2SO4 and copper oxides. The third stage is the destruction of La2O2SO4. The final result of the high-temperature treatment in the artificial air atmosphere was a mixture of barium sulfate, copper (II) oxide and La2CuO4. The mechanism and stages of BaLaCuS3 oxidation and further interactions of the components were discussed.

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Держатели документа:
Department of Inorganic and Physical Chemistry, Tyumen State University, Tyumen 625003, Russia
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
Research and Development Department, Kemerovo State University, Kemerovo 650000, Russia
Department of Industrial Machinery Design, Novosibirsk State Technical University, Novosibirsk 630073, Russia
R&D Center “Advanced Electronic Technologies”, Tomsk State University, Tomsk 634034, Russia
Laboratory for Nanomaterials and Nanoelectronics, Center for Nature-Inspired Engineering, Technology Park, Tyumen State University, Tyumen 625003, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia
Hybrid Nanodevice Research Group (HNRG), Department of Electrical Engineering, Indian Institute of Technology Indore, Indore 453552, India
Centre for Advanced Electronics (CAE), Indian Institute of Technology Indore, Indore 453552, India
School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
Institute of Solid State Chemistry, UB RAS, Yekaterinburg 620990, Russia

Доп.точки доступа:
Azarapin, N. O.; Khritokhin, N. A.; Atuchin, V. V.; Gubin, A. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mukherjee, S.; Andreev, O. V.
}
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16.


   
    Methane oxidation over A-site ordered and disordered Sr0.8Gd0.2CoO3−δ perovskites / S. N. Vereshchagin [et al.] // Chem. Commun. - 2014. - Vol. 50, Is. 46. - P. 6112-6115, DOI 10.1039/c4cc00913d. - Cited References: 20. - The authors acknowledge the financial support from SB RAS project N 38 (2012) and RFBR grant 13-02-00358. . - ISSN 1359-7345. - ISSN 1364-548X
РУБ Chemistry, Multidisciplinary
Рубрики:
MEMBRANE REACTORS
   OXYGEN

   OXIDES

   PERFORMANCE

   COMBUSTION

   FEATURES

   PHASES

Аннотация: A tetragonal phase Sr0.8Gd0.2CoO3−δ with ordered Gd3+/Sr2+ ions and oxygen vacancy sites is found to be about five times less active in the reaction of methane combustion than a quenched cubic perovskite phase with randomly distributed (disordered) Gd3+/Sr2+ ions over the A-sites of the crystal lattice.

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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Vereshchagin, S. N.; Solovyov, L. A.; Соловьев, Леонид Александрович; Rabchevskii, E. V.; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Anshits, A. G.; Аншиц, Александр Георгиевич; SB RAS project [38]; RFBR [13-02-00358]
}
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17.


   
    New method for regulating the activity of ABO3 perovskite catalysts / S. N. Vereshchagin [et al.] // Kinet. Catal. - 2015. - Vol. 56, Is. 5. - P. 640-645, DOI 10.1134/S0023158415040199. - Cited References:23. - This work was supported in part by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (grant no. NSh-2886.2014.2). . - ISSN 0023. - ISSN 1608-3210. -
РУБ Chemistry, Physical
Рубрики:
MEMBRANE REACTORS
   METHANE COMBUSTION

   OXIDATION

   OXIDES

   OXYGEN

   PERFORMANCE

   FEATURES

   PHASES

   CO

Кл.слова (ненормированные):
perovskite -- cobalt -- methane -- deep oxidation -- oxidative condensation
Аннотация: A new possibility of changing the activity and selectivity of perovskite catalysts in the oxidative conversion of methane was demonstrated using the Sr x Gd1–x CoO3–δ (0.5 < x < 0.9) compounds as an example. It was established that, at the same chemical composition, the disordering of Sr2+/Gd3+ ions over the A positions of the crystal structure led to a significant increase in activity in the deep oxidation reaction of CH4, as compared with the samples with an ordered distribution of cations.

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Публикация на русском языке Новый способ регулирования активности катализаторов АВО3 со структурой перовскита [Текст] / С. Н. Верещагин [и др.] // Кинетика и катализ. - М. : Наука, 2015. - Т. 56 № 5. - С. 649-664

Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Vereshchagin, S. N.; Solov'ev, L. A.; Соловьев, Леонид Александрович; Rabchevskii, E. V.; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Anshits, A. G.; Аншиц, Александр Георгиевич; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools [NSh-2886.2014.2]
}
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18.


   
    Oxatrane is a parent compound of a new atrane family: Crystal and molecular structure of triethanolamine N-oxide / M. G. Voronkov [et al.] // Dokl. Chem. - 2014. - Vol. 458. - P. 172-175, DOI 10.1134/S0012500814090031. - This work was supported by the Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools (grant no. NSh-3649.2014.3). . - ISSN 0012-5008. - ISSN 1608-3113
РУБ Chemistry, Multidisciplinary
Рубрики:
TERTIARY-AMINES
   DIETHANOLAMINE

   SILATRANES

   OXIDATION


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Публикация на русском языке Оксатран - родоначальник нового семейства атранов. Кристаллическая и молекулярная структура N-оксида триэтаноламина. [Текст] / М. Г. Воронков [и др.] // Докл. Акад. наук. - 2014. - Т. 458 № 3. - С. 287-290

Держатели документа:
Russian Acad Sci, Favorskii Inst Chem, Siberian Branch, Irkutsk 664033, Russia
East Siberian State Acad Educ, Irkutsk 664011, Russia
Russian Acad Sci, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Voronkov, M. G.; Zel'bst, E. A.; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kuznetsova, G. A.; Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools [NSh-3649.2014.3]
}
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19.


   
    Oxidation of Ag nanoparticles in aqueous media: Effect of particle size and capping / Y. L. Mikhlin [et al.] // Appl. Surf. Sci. - 2014. - Vol. 297. - P. 75-83, DOI 10.1016/j.apsusc.2014.01.081. - Cited References: 58. - This work was partially financially supported by the Ministry of Education and Science of RF (Grant 8580) and RFBR (12-03-31178). . - ISSN 0169-4332. - ISSN 1873-5584
   Перевод заглавия: Окисление наночастиц Ag в водной среде: Влияние размера частиц и оболочки.
РУБ Chemistry, Physical + Materials Science, Coatings & Films + Physics, Applied + Physics, Condensed Matter
Рубрики:
EX-SITU XPS
   POLYCRYSTALLINE SILVER ELECTRODES

   RAY PHOTOELECTRON-SPECTROSCOPY

   METAL NANOPARTICLES

   ELECTROCHEMICAL OXIDATION

   ABSORPTION SPECTROSCOPY

   PYROLYTIC-GRAPHITE

   OXYGEN-ADSORPTION

   TRANSFORMATIONS

   DISSOLUTION

Кл.слова (ненормированные):
Silver nanoparticles -- Oxidation -- Resistive switching effect -- X-ray photoelectron spectroscopy
Аннотация: Many applications and environmental impact of silver-bearing nanomaterials critically depend upon their specific reactivity, which is still poorly understood. Here, silver nanoparticles (Ag NPs) of about 3-5 nm and 10-12 nm in diameter, uncapped and capped with l-glucose or citrate, were prepared, characterized using UV-vis absorption spectroscopy, SAXS, TEM, and their (electro) chemical oxidation was examined in comparison with each other and bulk metal applying scanning tunneling microscopy and spectroscopy, cyclic voltammetry, and XPS. A resistive switching effect was found in the tunneling spectra measured in air at the smaller uncapped Ag NPs deposited on HOPG and was interpreted in terms of Ag transfer between the particle and the probe. The anodic oxidation of these Ag NPs in 1 M NaOH yielded 3D Ag2O, while only a layer of "primary"Ag(I) oxide emerged on larger uncapped nanoparticles during the potential sweep. The formation of AgO at higher potentials proceeded readily at the "primary"oxide but was retarded at the smaller NPs. The citrate- and glucose-capping substantially impeded the formation both of Ag2O and AgO. The findings highlighted, particularly, a non-trivial effect of particle size and transient mobilization of Ag species on the reactions of silver nanoparticles. (c) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mikhlin, Y. L.; Vishnyakova, E. A.; Romanchenko, A. S.; Saikova, S. V.; Сайкова, С. В.; Likhatski, M. N.; Larichev, Y. V.; Tuzikov, F. V.; Zaikovskii, V. I.; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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20.


   
    Oxidative conversion of methane over Gd-Sr-Co-perovskites: structure-activity relationship / S. N. Vereshchagin [et al.] // 12th Eur. Congress on Catalysis (EuropaCat-XII) : [proceedings]. - 2015. - Библиогр.: 4
Кл.слова (ненормированные):
methane -- oxidation -- OCM -- perovskite  -- crystal structure

Материалы конгресса

Доп.точки доступа:
Vereshchagin, S. N.; Solovyov, L. A.; Соловьев, Леонид Александрович; Shishkina, N. N.; Шишкина, Нина Николаевна; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Anshits, A. G.; Аншиц, Александр Георгиевич; European Congress on Catalysis "Catalysis: Balancing the use of fossil and renewable resources”(12 ; 30 Aug. - 4 Sept., 2015 ; Kazan, Russia)
}
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