Experimental methodologies to perform accelerated deactivation studies of hydrotreating catalysts

•HDT catalyst deactivation can be accelerated by severe operation conditions or refractory feedstock.•Coke and metal deposition are the most important HDT catalyst deactivation mechanisms.•Coke deposition rate is linked to operating conditions.•High temperatures affect metallic phase modification an...

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Bibliographic Details
Published in:Fuel (Guildford) 2023-01, Vol.332, p.126074, Article 126074
Main Authors: Morales–Leal, Francisco José, Ancheyta, Jorge, Torres–Mancera, Pablo, Alonso, Fernando
Format: Article
Language:English
Subjects:
Accelerated deactivation
Coke and metal deposition
Hydrotreating catalyst
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Summary:•HDT catalyst deactivation can be accelerated by severe operation conditions or refractory feedstock.•Coke and metal deposition are the most important HDT catalyst deactivation mechanisms.•Coke deposition rate is linked to operating conditions.•High temperatures affect metallic phase modification and thus deactivation. A comprehensive review of the scientific literature over the last two decades is conducted to have a clear understanding of the factors that accelerate the deactivation of hydrotreating (HDT) catalysts. The reported experimental methodologies employed at laboratory and pilot plant scales focused on achieving accelerated deactivation of HDT catalysts are reviewed and discussed. The different methodologies attempt to reproduce industrial long-term catalysts deactivation by using different operating conditions (mainly high reaction temperature and low H2-to-oil ratio) or feedstock with high content of compounds that cause coke and metal deposition, in short-term experiments.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2022.126074