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Phenanthrene Catalytic Cracking in Supercritical Water: Effect of the Reaction Medium on NiMo/SiO2 Catalysts Full article

Conference III Scientific-Technological Symposium "Catalytic Hydroprocessing in Oil Refining"
16-20 Apr 2018 , Lyon
Journal Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308
Output data Year: 2019, Volume: 329, Pages: 197-205 Pages count : 9 DOI: 10.1016/j.cattod.2018.10.019
Tags Phenanthrene PAHs Partial oxidation Supercritical water NiMo/SiO2
Authors Yeletsky P.M. 1 , Reina T.R. 2,3 , Bulavchenko O.A. 1 , Saraev A.A. 1 , Gerasimov E.Yu. 1 , Zaikina O.O. 1 , Bermúdez J.M. 2 , Arcelus-Arrillaga P. 2 , Yakovlev V.A. 1 , Millan M. 2
Affiliations
1 Boreskov Institute of Catalysis
2 Department of Chemical Engineering, Imperial College London
3 Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, United Kingdom

Funding (3)

1 National Council of Science and Technology
2 Skolkovo Foundation
3 BP Chemicals Limited, Research Laboratory

Abstract: A series of NiMo/SiO2 catalysts was synthesized by sol-gel method for heavy oil upgrading in supercritical water (SCW). Phenanthrene was used as substrate as it represents polyaromatic structures present in asphaltenes. No phenanthrene conversion was observed in a blank (non‐catalytic) experiment. However, phenanthrene conversions up to 24% after 1 h of reaction in SCW at 425 °C and 230 bar were observed in the presence of NiMo/ SiO2, underlining the role of the catalysts in the process. Conversion was found to be dependent mainly on Ni content and the Ni/Mo ratio in the catalysts. The liquid products obtained are thought to be the result of both oxidation and hydrogenation processes. Characterization of the fresh and spent catalysts using X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) was performed. It was revealed that catalysts are not completely stable in SCW, showing that NiMo intermetallic compounds formed the initial catalysts were decomposed, Mo0 and Ni0 were oxidised and the latter formed Ni2SiO4. In addition, MoO2 phase domain size in the catalysts increased and the surface of the spent catalysts appeared to be enriched with Ni and depleted with Mo.
Cite: Yeletsky P.M. , Reina T.R. , Bulavchenko O.A. , Saraev A.A. , Gerasimov E.Y. , Zaikina O.O. , Bermúdez J.M. , Arcelus-Arrillaga P. , Yakovlev V.A. , Millan M.
Phenanthrene Catalytic Cracking in Supercritical Water: Effect of the Reaction Medium on NiMo/SiO2 Catalysts
Catalysis Today. 2019. V.329. P.197-205. DOI: 10.1016/j.cattod.2018.10.019 WOS Scopus РИНЦ ANCAN OpenAlex
Files: Full text from publisher
Dates:
Submitted: Jul 26, 2018
Accepted: Oct 12, 2018
Published online: Nov 6, 2018
Published print: Jun 1, 2019
Identifiers:
Web of science: WOS:000462764600024
Scopus: 2-s2.0-85056422230
Elibrary: 38624295
Chemical Abstracts: 2018:2242133
Chemical Abstracts (print): 170:440500
OpenAlex: W2899867093
Citing:
DB Citing
Scopus 24
Web of science 20
Elibrary 26
OpenAlex 23
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