| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2021 |
| Язык | английский |
|
Борецкая Августина Вадимовна, автор
Егорова Светлана Робертовна, автор
Ламберов Александр Адольфович, автор
Ласкин Артем Игоревич, автор
Туктаров Рустем Рамилович, автор
|
|
Гизятуллов Рамиль Наилевич, автор
|
| Библиографическое описание на языке оригинала |
Egorova, S.R. Stabilizing effect of α-Cr2O3 on highly active phases and catalytic
performance of a chromium alumina catalyst in the process of
isobutane dehydrogenation / S.R. Egorova, R.R. Tuktarov, A.V. Boretskaya, A.I. Laskin, R.N. Gizyatullov, A.A. Lamberov // Molecular Catalysis. – 2021. – V.509. – P.111610 (doi.org/10.1016/j.mcat.2021.111610)
|
| Аннотация |
he demand for C3-C5 olefins is constantly growing, that is why it is important to improve the performance of
catalysts for dehydrogenation of light alkanes. The study regards the influence of the supports porous system, the
contribution of α-Cr2O3 particles to the state of the active phase and the catalytic performance of the chromiaalumina catalysts in the isobutane dehydrogenation reaction. The catalysts were synthesized by impregnating the
support with chromic acid. The supports and the catalysts were studied by the following techniques: lowtemperature nitrogen adsorption, temperature-programmed desorption and reduction; UV-Vis- and Ramanspectroscopy, X-ray phase and X-ray fluorescence analyses. It was found that crystals of α-Cr2O3 are formed
on a support with 56 m2/g specific surface area and 7.1% (m/m) chromium content, that contributes to stabilization of the particles of highly active phases of amorphous Cr2O3 and polychromates and catalytic performance. Meanwhile, no α-Cr2O3 particles are formed on a support with a 103 m2/g specific surface area and 7.4%
(m/m) chromium content. Therefore, in the course of 54 regeneration reactions cycles, the rates of isobutylene
formation and isobutylene selectivity are significantly reduced due to agglomeration of amorphous Cr2O3 particles, formation of di-, tri- chromates, and migration of part of chromium into the support structure |
| Ключевые слова |
Isobutane dehydrogenation, CrOx/Al2O3 catalyst, α-Cr2O3, Amorphous Cr2O3,
Chromium particles |
| Название журнала |
Molecular Catalysis
|
| Ссылка для РПД |
http://dspace.kpfu.ru/xmlui/bitstream/handle/net/163800/1_s2.0_S2468823121002273_main.pdf?sequence=1&isAllowed=y
|
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=253158 |
| Файлы ресурса | |
|
|
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Борецкая Августина Вадимовна |
ru_RU |
| dc.contributor.author |
Егорова Светлана Робертовна |
ru_RU |
| dc.contributor.author |
Ламберов Александр Адольфович |
ru_RU |
| dc.contributor.author |
Ласкин Артем Игоревич |
ru_RU |
| dc.contributor.author |
Туктаров Рустем Рамилович |
ru_RU |
| dc.contributor.author |
Гизятуллов Рамиль Наилевич |
ru_RU |
| dc.date.accessioned |
2021-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2021-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2021 |
ru_RU |
| dc.identifier.citation |
Egorova, S.R. Stabilizing effect of α-Cr2O3 on highly active phases and catalytic
performance of a chromium alumina catalyst in the process of
isobutane dehydrogenation / S.R. Egorova, R.R. Tuktarov, A.V. Boretskaya, A.I. Laskin, R.N. Gizyatullov, A.A. Lamberov // Molecular Catalysis. – 2021. – V.509. – P.111610 (doi.org/10.1016/j.mcat.2021.111610)
|
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=253158 |
ru_RU |
| dc.description.abstract |
Molecular Catalysis
|
ru_RU |
| dc.description.abstract |
he demand for C3-C5 olefins is constantly growing, that is why it is important to improve the performance of
catalysts for dehydrogenation of light alkanes. The study regards the influence of the supports porous system, the
contribution of α-Cr2O3 particles to the state of the active phase and the catalytic performance of the chromiaalumina catalysts in the isobutane dehydrogenation reaction. The catalysts were synthesized by impregnating the
support with chromic acid. The supports and the catalysts were studied by the following techniques: lowtemperature nitrogen adsorption, temperature-programmed desorption and reduction; UV-Vis- and Ramanspectroscopy, X-ray phase and X-ray fluorescence analyses. It was found that crystals of α-Cr2O3 are formed
on a support with 56 m2/g specific surface area and 7.1% (m/m) chromium content, that contributes to stabilization of the particles of highly active phases of amorphous Cr2O3 and polychromates and catalytic performance. Meanwhile, no α-Cr2O3 particles are formed on a support with a 103 m2/g specific surface area and 7.4%
(m/m) chromium content. Therefore, in the course of 54 regeneration reactions cycles, the rates of isobutylene
formation and isobutylene selectivity are significantly reduced due to agglomeration of amorphous Cr2O3 particles, formation of di-, tri- chromates, and migration of part of chromium into the support structure |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
Isobutane dehydrogenation |
ru_RU |
| dc.subject |
CrOx/Al2O3 catalyst |
ru_RU |
| dc.subject |
α-Cr2O3 |
ru_RU |
| dc.subject |
Amorphous Cr2O3 |
ru_RU |
| dc.subject |
Chromium particles |
ru_RU |
| dc.title |
Stabilizing effect of α-Cr2O3 on highly active phases and catalytic
performance of a chromium alumina catalyst in the process of
isobutane dehydrogenation |
ru_RU |
| dc.type |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
EN 
中文 
ES 
Карта сайта
