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The deactivation of acidic sites of NiMo/B2O3–Al2O3 catalysts during vegetable oil hydrodeoxygenation studied by EPR spectroscopy Научная публикация

Журнал Magnetic Resonance in Chemistry
ISSN: 0749-1581 , E-ISSN: 1097-458X
Вых. Данные Год: 2021, Том: 59, Страницы: 600-607 Страниц : 8 DOI: 10.1002/mrc.5126
Ключевые слова EPR; acidic sites; carbon deposits; NiMo catalysts; modified alumina
Авторы Yurpalov Vyacheslav L. 1 , Neponiashchii Aleksandr A. 1 , Drozdov Vladimir A. 1 , Antonicheva Nina V. 1 , Buluchevskiy Evgeniy A. 1 , Lavrenov Aleksandr V. 1
Организации
1 Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis

Информация о финансировании (1)

1 Министерство науки и высшего образования Российской Федерации V. 47

Реферат: This paper presents the study results of NiMo/B2O3-Al2O3 (0-30 % wt. of B2O3) catalysts for vegetable oil hydrodeoxygenation before and after catalytic tests by different EPR methodologies. For the initial catalysts, the concentration of Brønsted acidic sites (BAS) determined by probe EPR with perylene increases linearly with an increase in the modifier (B2O3) content in the samples. It was found that the isomerization activity of the catalysts is increases with increasing the concentration of determined BAS. As for the spent catalysts, linear correlation of paramagnetic species concentration with the content of carbon deposits (determined by TGA/DTA) was found. The main reasons for the NiMo/B2O3-Al2O3 catalysts deactivation over the formation of carbon deposits related to the participation of acidic sites (both Lewis and Brønsted) in the polycondensation of hydrocarbons via radical species are also proposed.
Библиографическая ссылка: Yurpalov V.L. , Neponiashchii A.A. , Drozdov V.A. , Antonicheva N.V. , Buluchevskiy E.A. , Lavrenov A.V.
The deactivation of acidic sites of NiMo/B2O3–Al2O3 catalysts during vegetable oil hydrodeoxygenation studied by EPR spectroscopy
Magnetic Resonance in Chemistry. 2021. V.59. P.600-607. DOI: 10.1002/mrc.5126 WOS Scopus РИНЦ OpenAlex
Даты:
Поступила в редакцию: 14 окт. 2020 г.
Принята к публикации: 23 дек. 2020 г.
Опубликована online: 4 янв. 2021 г.
Опубликована в печати: 27 апр. 2021 г.
Идентификаторы БД:
Web of science: WOS:000604531000001
Scopus: 2-s2.0-85099034311
РИНЦ: 45023209
OpenAlex: W3117330271
Цитирование в БД:
БД Цитирований
Web of science 2
Scopus 3
OpenAlex 2
Альметрики: