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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

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
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 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Apr 15, 2019
Accepted: Sep 13, 2019
Published online: Sep 16, 2019
Published print: Aug 15, 2020
Identifiers:
publication_identifier.wos_identifier_type WOS:000564577300011
publication_identifier.scopus_identifier_type 2-s2.0-85073739266
publication_identifier.rinz_identifier_type 41713061
publication_identifier.accession_number_identifier_type 2019:2020899
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