In situ study of structural transformation of the (TeO)x(Mo,V,Nb)5O14 mixed oxide nanocatalyst with a tunnel structure

E. Derevyannikova, T. Kardash, A. Marchuk, A. Simanenko, D. Svintsitsikiy, E. Lazareva

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции

Аннотация

The nano oxides (TeO)x(Mo,V,Nb)5O14 with so-called M1 structure are highly attractive objects due to unsurpassed catalytic properties. In situ X-ray powder diffraction method with high time resolution (0.4 seconds per diffraction pattern) was applied to study the structure stability and the mechanism of phase transformation under heating in the reductive conditions. It was shown that M1 structure gradually transforms into the rutile-type (Mo,V,Nb)O2 phase without intermediate phases and/or amorphisation at temperatures >480°C in a reductive media. The process is initiated by tellurium reduction and its sublimation to the gas phase.

Язык оригиналаанглийский
Номер статьи012029
ЖурналJournal of Physics: Conference Series
Том1410
Номер выпуска1
DOI
СостояниеОпубликовано - 20 дек 2019
Событие6th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures, SPbOPEN 2019 - Saint Petersburg, Российская Федерация
Продолжительность: 22 апр 201925 апр 2019

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