Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1134/S0020168522120019

Ключевые слова: oxidative dimerization of methane, metastable phase, bismuth silicate, bismuth germanate, amorphous material, decomposition

Аннотация: We have studied how the initial state of polycrystals of the metastable compounds Bi2GeO5 and Bi2SiO5 with an Aurivillius-type structure and a glass phase with the equimolar composition Bi2O3 : SiO2 influences the performance of in situ forming catalysts for oxidative dimerization of methane (ODM). The results confirm the effect of the gas phase consisting of the starting components of the catalyzed reaction on improvement of the performance of the catalyst obtained upon thermal decomposition of its initial metastable state: in situ catalyst “self-adjustment” effect. The best catalytic properties for ODM reaction are offered by bismuth silicate (Bi2SiO5) decomposition products, and the highest activity is exhibited by the catalyst forming upon crystallization of the glass phase. Bismuth-containing oxide catalysts have been shown to have the best properties if high-purity starting reagents are used to synthesize them.

Журнал: Inorganic Materials

Выпуск журнала: Т.58, №12

Номера страниц: 1294-1304

ISSN журнала: 00201685

Место издания: Москва

Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)

• Bermeshev T.V. (Siberian Federal University)
• Zhereb V.P. (Reshetnev Siberian State University of Science and Technology)
• Rabchevskii E.V. (Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences)
• Zverev V.A. (OOO Rusal Engineering and Technology Centre)
• Voroshilov D.S. (Siberian Federal University)
• Yasinsky A.S. (Siberian Federal University)
• Mazurova E.V. (Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences)
• Bundin M.P. (Siberian Federal University)
• Samoilo A.S. (Siberian Federal University)
• Bespalov V.M. (Siberian Federal University)
• Yushkova O.V. (Siberian Federal University)
• Podshibyakina E. Yu. (Siberian Federal University)
• Khlystov D.V. (Siberian Federal University)

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