Simultaneous hydrodesulfurization of benzothiophene and dibenzothiophene over CoMo/Al2O3 catalysts with different [Co/(Co + Mo)] ratios

Khaja W. Ahmed; Syed A. Ali; Shakeel Ahmed; Muhammad A. Al-Saleh

doi:10.1007/s11144-011-0288-1

Simultaneous hydrodesulfurization of benzothiophene and dibenzothiophene over CoMo/Al₂O₃ catalysts with different [Co/(Co + Mo)] ratios

Khaja W. Ahmed
, Syed A. Ali^*
, Shakeel Ahmed
, Muhammad A. Al-Saleh

^*Corresponding author for this work

Interdisciplinary Research Center for Refining and Advanced Chemicals

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A series of CoMo/γ-Al₂O₃ catalysts was prepared with [Co/(Co ? Mo)] ratios of 0.3, 0.4 and 0.5 while maintaining a total metal content of 19 wt%. These catalysts were tested in a batch autoclave reactor after presulfiding with the objective of studying the influence of Co/(Co ? Mo) ratio on the hydrodesulfurization (HDS) pathways of benzothiophene (BT) and dibenzothiophene (DBT). The results of this study have clearly demonstrated that the Co/Co ? Mo ratio has a significant influence on the overall HDS of BT and DBT as well on the direct desulfurization (DDS) pathway, but showed no influence on the hydrogenation pathway. A Co/Co ? Mo ratio of 0.4 was found to be optimum for both overall HDS as well as the HDS by DDS pathway.

Original language	English
Pages (from-to)	113-123
Number of pages	11
Journal	Reaction Kinetics, Mechanisms and Catalysis
Volume	103
Issue number	1
DOIs	https://doi.org/10.1007/s11144-011-0288-1
State	Published - Jun 2011

Keywords

Benzothiophene
CoMo catalysts
Dibenzothiophene
HDS pathways
Hydrodesulfurization

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

Access to Document

10.1007/s11144-011-0288-1

Cite this

@article{88bc42185f954d49abd961f0a03620dd,

title = "Simultaneous hydrodesulfurization of benzothiophene and dibenzothiophene over CoMo/Al2O3 catalysts with different [Co/(Co + Mo)] ratios",

abstract = "A series of CoMo/γ-Al2O3 catalysts was prepared with [Co/(Co ? Mo)] ratios of 0.3, 0.4 and 0.5 while maintaining a total metal content of 19 wt\%. These catalysts were tested in a batch autoclave reactor after presulfiding with the objective of studying the influence of Co/(Co ? Mo) ratio on the hydrodesulfurization (HDS) pathways of benzothiophene (BT) and dibenzothiophene (DBT). The results of this study have clearly demonstrated that the Co/Co ? Mo ratio has a significant influence on the overall HDS of BT and DBT as well on the direct desulfurization (DDS) pathway, but showed no influence on the hydrogenation pathway. A Co/Co ? Mo ratio of 0.4 was found to be optimum for both overall HDS as well as the HDS by DDS pathway.",

keywords = "Benzothiophene, CoMo catalysts, Dibenzothiophene, HDS pathways, Hydrodesulfurization",

author = "Ahmed, \{Khaja W.\} and Ali, \{Syed A.\} and Shakeel Ahmed and Al-Saleh, \{Muhammad A.\}",

year = "2011",

month = jun,

doi = "10.1007/s11144-011-0288-1",

language = "English",

volume = "103",

pages = "113--123",

journal = "Reaction Kinetics, Mechanisms and Catalysis",

issn = "1878-5190",

publisher = "Springer Science and Business Media B.V.",

number = "1",

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TY - JOUR

T1 - Simultaneous hydrodesulfurization of benzothiophene and dibenzothiophene over CoMo/Al2O3 catalysts with different [Co/(Co + Mo)] ratios

AU - Ahmed, Khaja W.

AU - Ali, Syed A.

AU - Ahmed, Shakeel

AU - Al-Saleh, Muhammad A.

PY - 2011/6

Y1 - 2011/6

N2 - A series of CoMo/γ-Al2O3 catalysts was prepared with [Co/(Co ? Mo)] ratios of 0.3, 0.4 and 0.5 while maintaining a total metal content of 19 wt%. These catalysts were tested in a batch autoclave reactor after presulfiding with the objective of studying the influence of Co/(Co ? Mo) ratio on the hydrodesulfurization (HDS) pathways of benzothiophene (BT) and dibenzothiophene (DBT). The results of this study have clearly demonstrated that the Co/Co ? Mo ratio has a significant influence on the overall HDS of BT and DBT as well on the direct desulfurization (DDS) pathway, but showed no influence on the hydrogenation pathway. A Co/Co ? Mo ratio of 0.4 was found to be optimum for both overall HDS as well as the HDS by DDS pathway.

AB - A series of CoMo/γ-Al2O3 catalysts was prepared with [Co/(Co ? Mo)] ratios of 0.3, 0.4 and 0.5 while maintaining a total metal content of 19 wt%. These catalysts were tested in a batch autoclave reactor after presulfiding with the objective of studying the influence of Co/(Co ? Mo) ratio on the hydrodesulfurization (HDS) pathways of benzothiophene (BT) and dibenzothiophene (DBT). The results of this study have clearly demonstrated that the Co/Co ? Mo ratio has a significant influence on the overall HDS of BT and DBT as well on the direct desulfurization (DDS) pathway, but showed no influence on the hydrogenation pathway. A Co/Co ? Mo ratio of 0.4 was found to be optimum for both overall HDS as well as the HDS by DDS pathway.

KW - Benzothiophene

KW - CoMo catalysts

KW - Dibenzothiophene

KW - HDS pathways

KW - Hydrodesulfurization

UR - https://www.scopus.com/pages/publications/79960042522

U2 - 10.1007/s11144-011-0288-1

DO - 10.1007/s11144-011-0288-1

M3 - Article

AN - SCOPUS:79960042522

SN - 1878-5190

VL - 103

SP - 113

EP - 123

JO - Reaction Kinetics, Mechanisms and Catalysis

JF - Reaction Kinetics, Mechanisms and Catalysis

IS - 1

ER -