Influence of USY Zeolite Recrystallization on Physicochemical Properties and Catalytic Performance of NiMo/USY-Al2O3 Hydrocracking Catalysts Full article
| Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2019, Volume: 329, Pages: 108-115 Pages count : 8 DOI: 10.1016/j.cattod.2019.01.003 | ||||||
| Tags | Micro-mesoporous zeolite Y; Faujasite; Recrystallization; Hydrocracking; Catalyst | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0010 |
| 2 | Russian Science Foundation | 14-23-00094 (114110570018) |
Abstract:
The effect of ultrastable zeolite Y recrystallization on the properties of NiMo/USY-Al2O3 hydrocracking catalyst has been studied. The mesoporosity, being introduced as the result of zeolite Y recrystallization, is mainly preserved at the subsequent steps of NiMo catalysts preparation. The total concentration of Brønsted acid sites in the catalysts varies proportionally to that for the corresponding zeolites used for preparation. It is observed that the higher the recrystallization degree the lower the concentration of strong Brønsted acid sites in the catalysts. UV–vis DRS, HRTEM and XPS data suggest that the state of supported Ni and Mo is similar for the catalysts prepared with parent and recrystallized zeolites. The catalysts based on recrystallized zeolites have significantly higher activity in hexadecane hydrocracking as compared to the catalyst obtained using parent zeolite. This effect is rationalized in terms of the improved accessibility of zeolite acid sites after recrystallization. Moreover, the mesoporosity introduced by zeolite Y recrystallization has a positive effect on the selectivity of NiMo/USY-Al2O3 hydrocracking catalyst.
Cite:
Kazakov M.O.
, Nadeina K.A.
, Danilova I.G.
, Dik P.P.
, Klimov O.V.
, Pereyma V.Y.
, Paukshtis E.A.
, Golubev I.S.
, Prosvirin I.P.
, Gerasimov E.Y.
, Dobryakova I.V.
, Knyazeva E.E.
, Ivanova I.I.
, Noskov A.S.
Influence of USY Zeolite Recrystallization on Physicochemical Properties and Catalytic Performance of NiMo/USY-Al2O3 Hydrocracking Catalysts
Catalysis Today. 2019. V.329. P.108-115. DOI: 10.1016/j.cattod.2019.01.003 WOS Scopus РИНЦ ANCAN OpenAlex
Influence of USY Zeolite Recrystallization on Physicochemical Properties and Catalytic Performance of NiMo/USY-Al2O3 Hydrocracking Catalysts
Catalysis Today. 2019. V.329. P.108-115. DOI: 10.1016/j.cattod.2019.01.003 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Sep 15, 2018 |
| Accepted: | Jan 2, 2019 |
| Published online: | Jan 4, 2019 |
| Published print: | Jun 1, 2019 |
Identifiers:
| Web of science: | WOS:000462764600013 |
| Scopus: | 2-s2.0-85059939482 |
| Elibrary: | 38673091 |
| Chemical Abstracts: | 2019:147281 |
| Chemical Abstracts (print): | 170:403678 |
| OpenAlex: | W2908413524 |