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 |
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| Вых. Данные | Год: 2021, Том: 59, Номер: 6, Страницы: 600-607 Страниц : 8 DOI: 10.1002/mrc.5126 | ||
| Ключевые слова | EPR, acidic sites, carbon deposits, NiMo catalysts, modified alumina | ||
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| Организации |
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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 electron paramagnetic resonance (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 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 thermogravimetric analysis [TGA]/differential thermal analysis [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. N6. P.600-607. DOI: 10.1002/mrc.5126 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
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. N6. P.600-607. DOI: 10.1002/mrc.5126 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Даты:
| Поступила в редакцию: | 14 окт. 2020 г. |
| Принята к публикации: | 18 дек. 2020 г. |
| Опубликована online: | 23 дек. 2020 г. |
| Опубликована в печати: | 1 июн. 2021 г. |
Идентификаторы БД:
| Web of science: | WOS:000604531000001 |
| Scopus: | 2-s2.0-85099034311 |
| РИНЦ: | 45023209 |
| Chemical Abstracts: | 2021:46965 |
| Chemical Abstracts (print): | 174:935519 |
| PMID (PubMed): | 33368711 |
| OpenAlex: | W3117330271 |