Synthesis OF Bi1.5CoSb1.5O7 pyrochlore under hydrothermal conditions and its catalytic properties in the CO oxidation
- 作者: Egorysheva A.V.1, Golodukhina S.V.1, Liberman E.Y.2, Razvorotneva L.S.1,3, Kirdyankin D.I.1, Popova E.F.1
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隶属关系:
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
- D.Mendeleev University of Chemical Technology of Russia
- National Research University Higher School of Economics
- 期: 卷 69, 编号 7 (2024)
- 页面: 947-955
- 栏目: СИНТЕЗ И СВОЙСТВА НЕОРГАНИЧЕСКИХ СОЕДИНЕНИЙ
- URL: https://gynecology.orscience.ru/0044-457X/article/view/666407
- DOI: https://doi.org/10.31857/S0044457X24070018
- EDN: https://elibrary.ru/XOSZQB
- ID: 666407
如何引用文章
详细
The pyrochlore solid solution region in the Bi2O3–CoO–Sb2O5 system is determined. A previously unknown ternary oxide Bi3Co2/3Sb7/3O11 with cubic KSbO3 structure (sp. gr. Pn-3, a = 9.5801(1) Å, wR =0.0132) is found. An isothermal section of the system is constructed in the region of CoO-Bi3SbO7-CoSb2O6-BiSbO4 at 650°C. It is shown that cobalt state in pyrochlore crystal lattice is Co2+. For pyrochlore composition Bi1.5CoSb1.5O7, the synthetic methods under hydrothermal conditions of both without microwave-assisted treatment and with it have been developed. Based on the data of X-ray diffraction analysis, local energy-dispersive X-ray analysis, scanning microscopy and IR spectroscopy, a mechanism for the pyrochlore phase formation under hydrothermal condition is proposed. The dispersed Bi1.5CoSb1.5O7 samples (SCD = 30 nm) are synthesized and the prospects of their use as catalysts for CO oxidation are shown.
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作者简介
A. Egorysheva
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 119991
S. Golodukhina
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 119991
E. Liberman
D.Mendeleev University of Chemical Technology of Russia
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 125047
L. Razvorotneva
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; National Research University Higher School of Economics
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 119991; Moscow, 101000
D. Kirdyankin
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 119991
E. Popova
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Email: anna_egorysheva@rambler.ru
俄罗斯联邦, Moscow, 119991
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