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CoNiMo/Al2O3 catalysts for deep hydrotreatment of vacuum gasoil

Paper ID Volume ID Publish Year Pages File Format Full-Text
53520 46973 2016 8 PDF Available
Title
CoNiMo/Al2O3 catalysts for deep hydrotreatment of vacuum gasoil
Abstract

•Trimetallic and bimetallic HDS catalysts were studied.•Catalyst with 1.8%Co and 1.2%Ni has the highest activity in VGO HDS.•There is an interaction between Co and Ni in trimetallic catalysts.•Formation of mixed Ni-Co-Mo-S phase was observed.

Trimetallic Co-Ni-Mo catalysts with different Co and Ni content (Co3Ni0, Co1.8Ni1.2, Co1.5Ni1.5, Co1.2Ni1.8 and Co0Ni3) were studied. Catalysts were characterized by HRTEM, XPS, EXAFS and XANES methods. It was shown that all catalysts contain metals preferentially in the form of sulfide active component with the structure that is similar to Co-Mo-S phase. Co-Mo and Ni-Mo catalysts contain active component in the form of Co-Mo-S and Ni-Mo-S phases respectively. Trimetallic catalysts were shown to contain mixed Ni-Co-Mo-S phases. Catalytic tests showed that the catalyst with 1.8% Co, 1.2% Ni and 10% Mo has the highest activity in hydrotreating of VGO. The highest activity of the catalyst is proposed to be provided by the formation of mixed Ni-Co-Mo-S phase.

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Keywords
Vacuum gasoil; Deep hydrotreatment; CoNiMo/Al2O3 catalysts; Active component
First Page Preview
CoNiMo/Al2O3 catalysts for deep hydrotreatment of vacuum gasoil
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 271, 1 August 2016, Pages 56–63
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis