KFU. Card publication. Spectroscopy analysis of the active component of chromia-alumina dehydrogenation catalysts

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FEDERAL UNIVERSITY

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SPECTROSCOPY ANALYSIS OF THE ACTIVE COMPONENT OF CHROMIA-ALUMINA DEHYDROGENATION CATALYSTS

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Bekmukhamedov Giyaz Eduardovich, author

Egorova Svetlana Robertovna, author

Lamberov Aleksandr Adolfovich, author

Tuktarov Rustem Ramilovich, author

Yakhvarov Dmitriy Grigorevich, author

Other authors

Igo Aleksandr Vladimirovich, author

Kozhevin Aleksandr Evgenevich, author

Morozov Vladimir Ivanovich, author

Bibliographic description in the original language

Spectroscopy analysis of the active component of chromia-alumina dehydrogenation catalysts / G. Bekmukhamedov, A. Igo, R. Tuktarov, V. Morozov, S. Egorova, A. Kozhevin, A. Lamberov and D. Yakhvarov // New Journal of Chemistry, 2022, 46, 4974-4978, DOI: 10.1039/D1NJ06117H

Annotation

The active component of chromia-alumina dehydrogenation catalysts has been studied by Raman and photoluminescence spectroscopy. The stress state at the Al2O3–Cr2O3 interface has been determined by photoluminescence spectroscopy. A model of the spatial distribution of the stresses in Cr2O3 crystals of the catalysts was developed on the basis of the Raman spectroscopy data. Two parameters characterizing this distribution have been determined: PM and α – maximum stress and the rate of the stress drop in Cr2O3 crystals, respectively. It was shown that decrease in the stress at the surface of the Cr2O3 crystals from 0.9 to 0.5 GPa is accompanied by decreasing of the catalytic activity in the dehydrogenation process – the conversion of n-butane to unsaturated derivatives decreases from 27.4% to 23.0%.

Keywords

catalyst, dehydrogenation, chromia, Raman spectroscopy

The name of the journal

NEW JOURNAL OF CHEMISTRY

URL

https://pubs.rsc.org/en/content/articlelanding/2022/nj/d1nj06117h/unauth

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=263124&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bekmukhamedov Giyaz Eduardovich	ru_RU
dc.contributor.author	Egorova Svetlana Robertovna	ru_RU
dc.contributor.author	Lamberov Aleksandr Adolfovich	ru_RU
dc.contributor.author	Tuktarov Rustem Ramilovich	ru_RU
dc.contributor.author	Yakhvarov Dmitriy Grigorevich	ru_RU
dc.contributor.author	Igo Aleksandr Vladimirovich	ru_RU
dc.contributor.author	Kozhevin Aleksandr Evgenevich	ru_RU
dc.contributor.author	Morozov Vladimir Ivanovich	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Spectroscopy analysis of the active component of chromia-alumina dehydrogenation catalysts / G. Bekmukhamedov, A. Igo, R. Tuktarov, V. Morozov, S. Egorova, A. Kozhevin, A. Lamberov and D. Yakhvarov // New Journal of Chemistry, 2022, 46, 4974-4978, DOI: 10.1039/D1NJ06117H	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=263124&p_lang=2	ru_RU
dc.description.abstract	NEW JOURNAL OF CHEMISTRY	ru_RU
dc.description.abstract	The active component of chromia-alumina dehydrogenation catalysts has been studied by Raman and photoluminescence spectroscopy. The stress state at the Al2O3–Cr2O3 interface has been determined by photoluminescence spectroscopy. A model of the spatial distribution of the stresses in Cr2O3 crystals of the catalysts was developed on the basis of the Raman spectroscopy data. Two parameters characterizing this distribution have been determined: PM and α – maximum stress and the rate of the stress drop in Cr2O3 crystals, respectively. It was shown that decrease in the stress at the surface of the Cr2O3 crystals from 0.9 to 0.5 GPa is accompanied by decreasing of the catalytic activity in the dehydrogenation process – the conversion of n-butane to unsaturated derivatives decreases from 27.4% to 23.0%.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	catalyst	ru_RU
dc.subject	dehydrogenation	ru_RU
dc.subject	chromia	ru_RU
dc.subject	Raman spectroscopy	ru_RU
dc.title	Spectroscopy analysis of the active component of chromia-alumina dehydrogenation catalysts	ru_RU
dc.type	Articles in international journals and collections	ru_RU