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Balaev, A. D.
Study of magnetic static properties of beta-type potassium ferrite monocrystals / A. D. Balaev, V. N. Vasilev, E. N. Matveiko // Fiz. Tverd. Tela. - 1996. - Vol. 38, Is. 11. - P. 3427-3429. - Cited References: 5 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
Vasilev, V. N.; Matveiko, E. N.
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Golovnev, N. N.
Structure of potassium and cesium barbiturates / N. N. Golovnev, M. S. Molokeev, M. K. Lesnikov // Russ. J. Inorg. Chem. - 2018. - Vol. 63, Is. 10. - P. 1315-1321, DOI 10.1134/S0036023618100078. - Cited References: 25. - This work was performed within the state task from the Ministry of Education and Science to the Siberian Federal University in 2017-2019 (4.7666.2017/BCh). . - ISSN 0036-0236. - ISSN 1531-8613

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
CRYSTAL-STRUCTURE
THERMAL-PROPERTIES
1,3-DIETHYL-2-THIOBARBITURATE
Кл.слова (ненормированные):
potassium and cesium barbiturates -- synthesis -- structure -- thermal decomposition
Аннотация: The structures of catena-[K(μ6-Hba−O,O,O,O′,O′,O″)] (I) and catena-[Cs(μ6-Hba–O,O,O′,O′,O″,O″)] (II), where Н2ba is barbituric acid C4H4N2O3, were characterized by powder X-ray diffraction. Crystallographic data: a = 14.1603 (4) Å, b = 3.68977 (9) Å, c = 10.9508 (3) Å, β = 82.226 (1)°, V = 566.90 (3) Å3, space group P21/n, Z = 4 for I; a = 14.652 (1) Å, b = 11.7275 (7) Å, c = 3.8098 (3) Å, β = 79.140 (6)°, V = 642.90 (8) Å3, space group C2/m, Z = 4 for II. The structural topologies of alkali metal complexes with barbituric acid and some its derivatives were compared. The thermal stability of complexes I and II in an air atmosphere was studied.

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Публикация на русском языке Головнев Н. Н. Структура барбитуратов калия и цезия [Текст] / Н. Н. Головнев, М. С. Молокеев, М. К. Лесников // Журн. неорг. химии. - 2018. - Т. 63 № 10. - С. 1299–1305

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Khabarovsk 680021, Russia.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Lesnikov, M. K.; Ministry of Education and Science [4.7666.2017/BCh]
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Ferroelectric phase-transition study in potassium trihydroselenite by Se-77 high-precision NMR method / A. A. Sukhovskii [et al.] // Fiz. Tverd. Tela. - 1980. - Vol. 22, Is. 3. - P. 914-917. - Cited References: 11 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
SUKHOVSKII, A. A.; KRIGER, A. I.; MOSKVICH, Y. N.; Lundin, A. G.; Лундин, Арнольд Геннадьевич
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Raman spectra and elastic properties of KPb2Cl5 crystals / A. N. Vtyurin [et al.] ; ed.: A Kaplyanskii, A Akimov, Akimov, // 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA) : WILEY-V C H VERLAG GMBH, 2004. - P. 3142-3145, DOI 10.1002/pssc.200405401. - Cited References: 10 . - ISBN 3-527-40588-7

РУБ Physics, Condensed Matter
Рубрики:
LATTICE-DYNAMICS
Кл.слова (ненормированные):
Computer simulation -- Crystal structure -- Eigenvalues and eigenfunctions -- Halogen compounds -- Nonlinear optics -- Phonons -- Potassium compounds -- Vectors -- Elastic constants -- Heavy cations -- Ionic electron envelopes -- Ionic interactions -- Raman scattering
Аннотация: Raman scattering spectra and elastic constants of KPb2Cl5 crystals have been studied. The results obtained are interpreted in terms of the ab initio lattice dynamics model taking into account multipole moments of ionic electron envelopes. The experimental results have been found to be in good agreement with numerical simulation; the narrow phonon spectra are shown to be due to a considerable contribution of heavy cations into the eigenvectors of the higher frequency lattice modes.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Jt. Inst. Geol., Geophys./Mineral., 630090 Novosibirsk, Russian Federation
Krasnoyarsk State University, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Isaenko, L. I.; Krylova, S. N.; Крылова, Светлана Николаевна; Yelisseyev, A.; Shebanin, A. P.; Turchin, P. P.; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zinenko, V. I.; Зиненко, Виктор Иванович
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MOSSBAUER STUDY OF POTASSIUM FERRITES / O. A. BAYUKOV [и др.] // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 6. - P. 1449-1456. - Cited References: 16 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
BETA-ALUMINA

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Доп.точки доступа:
BAYUKOV, O. A.; PETRAKOVSKII, G. A.; SABLINA, K. A.; MATVEIKO, E. N.
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Heat capacity, thermal expansion and barocaloric effect in fluoride K2TaF7 / I. N. Flerov [et al.] // J. Mater. Sci. - 2019. - Vol. 54, Is. 23. - P. 14287–14295, DOI 10.1007/s10853-019-03924-8. - Cited References: 20. - The reported study was funded by RFBR according to the research Project No. 18-02-00269_a. . - ISSN 0022-2461
Кл.слова (ненормированные):
Expansion -- Fluorine compounds -- Specific heat -- Tantalum compounds -- Thermal expansion -- Barocaloric effects -- First-order phase transitions -- High sensitivity -- Low pressures -- Temperature phase -- Volume strain -- Potassium compounds
Аннотация: The heat capacity and thermal expansion of potassium heptafluorotantalate were studied. The room temperature phase P21/c is stable at least to 4 K. The strong first-order phase transition P21/c−Pnma at T0=486.2K is accompanied by giant changes in the entropy, ΔS0=22.3J(molK)−1, and volume strain, δV0/V=−3.6%. A rather high sensitivity of K2TaF7 to pressure was found, dT0/dp=−220KGPa−1. Significant extensive and intensive barocaloric effects are found at low pressure. The possibility of improving the barocaloric properties is discussed.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation
Astafijev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation
Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, 690022, Russian Federation

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Pogorel'tsev, E. I.; Погорельцев, Евгений Ильич; Laptash, N. M.
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    High ionic conductivity of K5-xTlx(Mg0.5Hf1.5)(MoO4)6 (0 ≤ х ≤ 5) solid solutions / V. G. Grossman, M. S. Molokeev, J. G. Bazarova, B. G. Bazarov // Solid State Sci. - 2022. - Vol. 134. - Ст. 107027, DOI 10.1016/j.solidstatesciences.2022.107027. - Cited References: 39. - The work was supported by Basic Project of BINM SB RAS №0273-2021-0008. Structural analysis of materials in this study was partly supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation . X-ray powder diffraction and thermal analysis were obtained using the equipment of the Collective Use Center BINM SB RAS . - ISSN 1293-2558
   Перевод заглавия: Высокая ионная проводимость твердых растворов K5-xTlx(Mg0.5Hf1.5)(MoO4)6 (0 ≤ х ≤ 5)
Кл.слова (ненормированные):
Synthesis -- Thallium -- Potassium -- Molybdates -- DSC -- Conducting material
Аннотация: Novel K5-xTlx(Mg0.5Hf1.5)(MoO4)6 (0 ≤ х ≤ 5) oxides were successfully synthesized by solid state reaction. The results indicate the formation of a continuous series of solid solutions with the NASICON-like structure (sp. gr. R3¯c) in the composition range 0 < x < 5. The unit-cell parameters of the solid solutions increase linearly with composition, as a consequence of thallium substitution for potassium. The cation conductivity of Tl5Mg0.5Hf1.5(MoO4)6 has been shown to exceed the conductivity of the parent potassium magnesium hafnium molybdate. The highest total conductivity of 2.49 × 10−3 S/cm was found at 831 K for Tl5Mg0.5Hf1.5(MoO4)6.

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Держатели документа:
Baikal Institute of Nature Management, SB RAS, Sakhyanovoy St., 6, Ulan-Ude, 670047, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Academy of Sciences, 50 / 38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 82 Svobodniy Av., Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Serysheva str. 47, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Grossman, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarova, J. G.; Bazarov, B. G.
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Lundin, A. G.
Radiospectroscopic investigation of potassium ferrocyanide and isomorphous compounds / A. G. Lundin, E. P. Zeer // Proceedings of the International meeting on ferroelectricity. - 1966. - P. 400-409. - Cited References: 10

Доп.точки доступа:
Zeer, E. P.; Зеер, Эвальд Петрович; Лундин, Арнольд Геннадьевич; International Meeting on ferroelectricity(1 ; 1966 ; June28-Luly 1 ; Prague)
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    Simultaneous ion exchange recovery of platinum and rhodium from chloride solutions / O. N. Kononova [et al.] // Hydrometallurgy. - 2011. - Vol. 105, Is. 3-4. - P. 341-349, DOI 10.1016/j.hydromet.2010.11.009. - Cited Reference Count: 46 . - JAN. - ISSN 0304-386X
Рубрики:
GROUP-METALS PGM
   SEPARATION
   CATALYST
   ANION
   ADSORPTION
   EXTRACTION
   CHEMISTRY
   RESIN
Кл.слова (ненормированные):
platinum -- rhodium -- sorption -- anion exchangers -- chloride solutions -- anion exchangers -- chloride solutions -- platinum -- rhodium -- sorption -- ammonium thiocyanate -- anion exchangers -- basic parameters -- chemical structure -- chloride solutions -- diffusion coefficients -- distribution coefficient -- exchange capacities -- kinetic properties -- noble metals -- purolite -- rhodium chloride -- separation factors -- sorption ability -- work focus -- ammonium compounds -- chlorine compounds -- desorption -- hydrochloric acid -- ion exchange -- ion exchange resins -- ions -- platinum -- platinum compounds -- potassium hydroxide -- precious metals -- recovery -- rhodium -- sulfuric acid -- thioureas -- urea -- rhodium compounds
Аннотация: This work focuses on the sorption recovery of platinum (II, IV) and rhodium (III) simultaneously present in chloride solutions, freshly prepared and stored over 3 months, on commercial anion exchangers with different physical and chemical structure. The sorption was carried out from solutions with 0.001-4.0 mol/L HCl. The initial platinum and rhodium concentrations in contacting solutions were 0.25-2.5 mmol/L Sorption and kinetic properties of the chosen anion exchangers were investigated and the basic parameters of exchange capacity, recovery, distribution coefficients, separation factors, process rate, diffusion coefficients and half-exchange times were calculated. It is shown that anion exchangers investigated possess high sorption ability to platinum and rhodium chloride complexes, which does not deteriorate in case of stored solutions. Desorption of platinum and rhodium from the resins investigated was carried out with hydrochloric acid (2 mol/L), thiourea (1 mol/L) in sulfuric acid (2 mol/L) or in potassium hydroxide (2 mol/L) as well as by ammonium thiocyanate (2 mol/L). It was shown that complete separation of platinum and rhodium can be carried out with 2 mol/L HCl on anion exchanger Purolite S 985, whereas 2 mol/L NH(4)SCN as an elution agent leads to complete separation of noble metals on anion exchangers Purolite S 985, Purolite A 500 and AM-2B. (C) 2010 Elsevier B.V. All rights reserved.

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

Доп.точки доступа:
Kononova, O.N.; Melnikov, A.M.; Borisova, T.V.; Krylov, A. S.; Крылов, Александр Сергеевич
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10.

    Potassium and thallium conductors with a trigonal structure in the M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) systems: Synthesis, structure, and ionic conductivity / V. G. Grossman, M. S. Molokeev, B. G. Bazarov, J. G. Bazarova // J. Alloys Compd. - 2021. - Vol. 873. - Ст. 159828, DOI 10.1016/j.jallcom.2021.159828. - Cited References: 62. - The work was supported by Basic Project of BINM SB RAS № 0273-2021-0008 . Research was conducted using equipment of the CCU BINM SB RAS (Ulan-Ude, Russia). Structural analysis of materials in this study was partly supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation . - ISSN 0925-8388
   Перевод заглавия: Калиевые и таллиевые проводники с тригональной структурой в системах M2MoO4-Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl): синтез, структура и ионная проводимость
Кл.слова (ненормированные):
Synthesis -- Thallium -- Potassium -- Molybdates -- Phase diagram -- DSC -- Conducting material
Аннотация: The triple molybdates M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 were found upon studying the corresponding ternary molybdate systems M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) in the subsolidus region using X-ray powder diffraction. The crystal structures of M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 are refined by Rietveld method. M5CrHf(MoO4)6 (M = K, Tl) crystallizes in space group Rc with unit cell parameters: a = b = 10.45548 (5), c = 37.24614 (3) Å, V = 3526.14 (4) Å3, Z = 6 for K5CrHf(MoO4)6 and a = b = 10.53406 (12), c = 37.6837 (5) Å, V = 3621.39 (9) Å3, Z = 6 for Tl5CrHf(MoO4)6. TlCrHf0.5(MoO4)3 crystallizes in space group R with unit cell parameters: a = b = 12.9710 (2), c = 11.7825 (2) Å, V = 1716.78 (6) Å3, Z = 6. The thermal stability and electrical conductivity of the new compounds were investigated. Electrical conductivity measurements gave high values for the triple molybdates M5CrHf(MoO4)6 (M = K, Tl) (σ = 5.22 × 10−4 S / cm for K5CrHf(MoO4)6, σ = 1.1 × 10−2 S / cm for Tl5CrHf(MoO4)6 at 773 K) and relatively low values for the triple molybdate TlCrHf0.5(MoO4)3 (σ = 4.42 × 10−6 S / cm at 773 K).

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Держатели документа:
Baikal Institute of Nature Management, SB RAS, Sakhyanovoy St., 6, Ulan-Ude, 670047, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Academy of Sciences, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 82 Svobodniy Av., Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Serysheva str. 47, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Grossman, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarov, B. G.; Bazarova, J. G.
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