Is it Possible to Reactivate Hydrotreating Catalyst Poisoned by Silicon? Научная публикация
| Журнал |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Вых. Данные | Год: 2021, Том: 378, Страницы: 43-56 Страниц : 14 DOI: 10.1016/j.cattod.2021.03.005 | ||
| Ключевые слова | hydrotreating; CoMo; poisoned by Si; reactivation | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0239-2021-0006 |
Реферат:
The feasibility of the reactivation of CoMo/Al2O3 hydrotreating catalysts poisoned by Si compounds has been studied. CoMo/Al2O3 catalysts poisoned with 3, 4 and 5 wt.% of silicon were obtained during hydrotreating of diesel fraction contaminated with decamethylcyclopentasiloxane. Catalysts poisoned by different amount of silicon were regenerated by oxidative treatment and subsequently reactivated using citric acid solution. The catalysts were studied by nitrogen adsorption-desorption method, CHNS analysis, UV–Vis, thermal analysis, SEM, HRTEM, XPS. It was shown that the hydrodesulfurization activity of regenerated catalysts decreased with increasing silicon content. According to UV-Vis results, the increase in Si content on the spent catalyst leads to the formation of CoOx oxides after oxidative regeneration. Probably, cobalt oxides do not promote MoS2 slabs during sulfidation, convert to inactive Co species and decrease hydrodesulfurization activity. After reactivation procedure, there was the increase in active component particles dispersion, while catalytic activity in hydrodesulfurization of dibenzothiophene and hydrodenitrogenation of quinoline increased. It was established that hydrodesulfurization and hydrodenitrogenation activities of CoMo/Al2O3 catalyst with less than 3 wt.% of Si could be completely restored by reactivation.
Библиографическая ссылка:
Vatutina Y.V.
, Kazakov M.O.
, Nadeina K.A.
, Budukva S.V.
, Danilova I.G.
, Gerasimov E.Y.
, Suprun E.A.
, Prosvirin I.P.
, Nikolaeva O.A.
, Gabrienko A.A.
, Klimov O.V.
, Noskov A.S.
Is it Possible to Reactivate Hydrotreating Catalyst Poisoned by Silicon?
Catalysis Today. 2021. V.378. P.43-56. DOI: 10.1016/j.cattod.2021.03.005 WOS Scopus РИНЦ CAPlus OpenAlex
Is it Possible to Reactivate Hydrotreating Catalyst Poisoned by Silicon?
Catalysis Today. 2021. V.378. P.43-56. DOI: 10.1016/j.cattod.2021.03.005 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 2 сент. 2020 г. |
| Принята к публикации: | 1 мар. 2021 г. |
| Опубликована online: | 6 мар. 2021 г. |
| Опубликована в печати: | 15 окт. 2021 г. |
Идентификаторы БД:
| Web of science: | WOS:000687319200006 |
| Scopus: | 2-s2.0-85103029797 |
| РИНЦ: | 46763876 |
| Chemical Abstracts: | 2021:726939 |
| OpenAlex: | W3133633803 |