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Comparison of Alumina Supports and Catalytic Activity of CoMoP/γ-Al2O3 Hydrotreating Catalysts Obtained Using Flash Calcination of Gibbsite and Precipitation Method Full article

Journal Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308
Output data Year: 2020, Volume: 353, Pages: 88-98 Pages count : 11 DOI: 10.1016/j.cattod.2019.09.019
Tags flash calcination, alumina, pseudoboehmite, hydrotreating, hydrodesulfurization, hydrodenitrogenation
Authors Stolyarova E.A. 1 , Danilevich V.V. 1 , Klimov O.V. 1 , Gerasimov E.Yu. 1 , Ushakov V.A. 1 , Chetyrin I.A. 1 , Lushchikova A.E. 1 , Saiko A.V. 1 , Kondrashev D.O. 2 , Kleimenov A.V. 2 , Noskov A.S. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS
2 PJSC «Gazprom Neft»

Funding (1)

1 Federal Agency for Scientific Organizations 0303-2016-0010

Abstract: The influence of alumina precursors on catalytic activity CoMoP/Al2O3 hydrotreating catalysts has been studied. Alumina precursors were prepared by eco-friendly technology including hydrothermal treatment at different stabilization time of a flash calcined gibbsite. One sample was synthesized with the addition of boric acid. A reference sample of pseudoboehmite was obtained by precipitation from aluminum nitrate with aqueous ammonia. Alumina precursors, supports and catalysts were studied by XRD, nitrogen adsorption/desorption, XPS, HRTEM. CoMoP/Al2O3 catalysts were tested in hydrotreating of model feed and fuel mixture. It is shown that the samples obtained from the product of flash calcination of gibbsite, besides pseudoboehmite, also include the amorphous phase, while the reference sample, synthesized by precipitation, is a pure pseudoboehmite. The introduction of boron prevents the crystallization of pseudoboehmite. Textural properties of the catalysts depend of initial support: alumina samples prepared by hydrothermal treatment have a bimodal pore distribution with peaks at 60-70 Å and 150-200 Å, the support synthesized through reprecipitation has a unimodal distribution with a maximum at 80 Å. The initial alumina used as a catalyst support has a significant impact on the share of CoMoS phase of type II. The highest activities in the hydrotreating of model feed (dibenzothiophene, quinoline and naphthalene in undecane) and fuel mixture shown catalyst prepared using hydrothermal treatment of flash calcined gibbsite without addition boric acid and with short stabilization time.
Cite: Stolyarova E.A. , Danilevich V.V. , Klimov O.V. , Gerasimov E.Y. , Ushakov V.A. , Chetyrin I.A. , Lushchikova A.E. , Saiko A.V. , Kondrashev D.O. , Kleimenov A.V. , Noskov A.S.
Comparison of Alumina Supports and Catalytic Activity of CoMoP/γ-Al2O3 Hydrotreating Catalysts Obtained Using Flash Calcination of Gibbsite and Precipitation Method
Catalysis Today. 2020. V.353. P.88-98. DOI: 10.1016/j.cattod.2019.09.019 WOS Scopus РИНЦ AN OpenAlex
Dates:
Submitted: Apr 15, 2019
Accepted: Sep 13, 2019
Published online: Sep 16, 2019
Published print: Aug 15, 2020
Identifiers:
Web of science: WOS:000564577300011
Scopus: 2-s2.0-85073739266
Elibrary: 41713061
Chemical Abstracts: 2019:2020899
OpenAlex: W2973861829
Citing:
DB Citing
Scopus 17
Elibrary 17
Web of science 16
OpenAlex 18
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