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Hydrocracking of Vacuum Gas Oil over NiMo/Y-Al2O3: Effect of Mesoporosity Introduced by Zeolite Y Recrystallization Full article

Journal Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308
Output data Year: 2018, Volume: 305, Pages: 117-125 Pages count : 9 DOI: 10.1016/j.cattod.2017.08.048
Tags Catalyst, Hydrocracking, Micro-mesoporous zeolite Y, Stacked bed, Vacuum gas oil, Zeolite recrystallization
Authors Kazakov M.O. 1 , Nadeina K.A. 1 , Danilova I.G. 1 , Dik P.P. 1 , Klimov O.V. 1 , Pereyma V.Yu. 1 , Gerasimov E.Yu. 1 , Dobryakova I.V. 2 , Knyazeva E.E. 2,3 , Ivanova I.I. 2,3 , Noskov A.S. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Pr. Lavrentieva 5, 630090 Novosibirsk, Russia
2 Department of Chemistry, Moscow State University, Lenin Hills 1/3, 119991 Moscow, Russia
3 A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninskiy Prospect 29, 119991 Moscow, Russia

Funding (1)

1 The Ministry of Education and Science of the Russian Federation 14.610.21.0008 (RFMEFI61015X0008)

Abstract: Hydrocracking of vacuum gas oil was studied over micro-mesoporous zeolite based catalysts, obtained by zeolite Y recrystallization. The contribution of mesoporosity in recrystallized materials was varied by adjusting the content of alkali and the temperature of hydrothermal treatment. The increase of recrystallization degree results in the increase of mesopore to micropore volume of zeolite Y as well as to the decrease of the contribution of strong Brønsted acid sites in faujasite cages and the increase of the contribution of Brønsted acid sites in mesopores. The highest hydrocracking activity and middle distillates yield is achieved over NiMo catalyst obtained with micro-mesoporous material with low degree of recrystallization. This effect is due to the improved accessibility of active sites and easier transport of bulky molecules provided by mesopores, on the one hand, and optimal zeolitic acidity, on the other hand. The highest selectivity to middle distillates is achieved over catalyst with the highest degree of zeolite recrystallization. This observation can be explained by the decrease of the contribution of strong BAS (bridging Si-O(H)-Al groups) accompanied by the increase of concentration of BAS in mesopores.
Cite: Kazakov M.O. , Nadeina K.A. , Danilova I.G. , Dik P.P. , Klimov O.V. , Pereyma V.Y. , Gerasimov E.Y. , Dobryakova I.V. , Knyazeva E.E. , Ivanova I.I. , Noskov A.S.
Hydrocracking of Vacuum Gas Oil over NiMo/Y-Al2O3: Effect of Mesoporosity Introduced by Zeolite Y Recrystallization
Catalysis Today. 2018. V.305. P.117-125. DOI: 10.1016/j.cattod.2017.08.048 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: May 19, 2017
Accepted: Aug 22, 2017
Published online: Aug 26, 2017
Published print: May 1, 2018
Identifiers:
Web of science: WOS:000425550100015
Scopus: 2-s2.0-85028334867
Elibrary: 35479167
Chemical Abstracts: 2017:1398718
Chemical Abstracts (print): 168:212420
OpenAlex: W2748538970
Citing:
DB Citing
Web of science 51
Scopus 57
Elibrary 60
OpenAlex 57
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