The role of MgO in the formation of surface active phases of CoMo/Al2O3-MgO catalysts for hydrodesulfurization of dibenzothiophene

Libao Wu; Dongmei Jiao; Jin an Wang; Lifang Chen; Fahai Cao

doi:10.1016/j.catcom.2009.10.021

The role of MgO in the formation of surface active phases of CoMo/Al₂O₃-MgO catalysts for hydrodesulfurization of dibenzothiophene

Libao Wu, Dongmei Jiao, Jin an Wang, Lifang Chen, Fahai Cao

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

30 Scopus citations

Abstract

A series of CoMo/Al₂O₃-MgO-x (x = [MgO/(Al₂O₃ + MgO)], weight ratio) catalysts were prepared by incipient wetness impregnation method with urea as chelating agent. The characterization results of UV-vis diffuse reflectance spectroscopy and Raman spectroscopy showed that Mo and Co species were highly dispersed in small clusters. Introduction of a proper amount of MgO into Al₂O₃ support not only induced new active forms of Mo species formed on the surface of the catalysts but also successfully inhibited the formation of inactive CoAl₂O₄ or Co₃O₄ phases, thus significantly improving the hydrodesulfurization activity. Crown

Original language	English
Pages (from-to)	302-305
Number of pages	4
Journal	Catalysis Communications
Volume	11
Issue number	4
DOIs	https://doi.org/10.1016/j.catcom.2009.10.021
State	Published - 15 Dec 2009
Externally published	Yes

Keywords

AlO-MgO
Hydrodesulfurization
Small cluster

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10.1016/j.catcom.2009.10.021

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title = "The role of MgO in the formation of surface active phases of CoMo/Al2O3-MgO catalysts for hydrodesulfurization of dibenzothiophene",

abstract = "A series of CoMo/Al2O3-MgO-x (x = [MgO/(Al2O3 + MgO)], weight ratio) catalysts were prepared by incipient wetness impregnation method with urea as chelating agent. The characterization results of UV-vis diffuse reflectance spectroscopy and Raman spectroscopy showed that Mo and Co species were highly dispersed in small clusters. Introduction of a proper amount of MgO into Al2O3 support not only induced new active forms of Mo species formed on the surface of the catalysts but also successfully inhibited the formation of inactive CoAl2O4 or Co3O4 phases, thus significantly improving the hydrodesulfurization activity. Crown",

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T1 - The role of MgO in the formation of surface active phases of CoMo/Al2O3-MgO catalysts for hydrodesulfurization of dibenzothiophene

AU - Wu, Libao

AU - Jiao, Dongmei

AU - Wang, Jin an

AU - Chen, Lifang

AU - Cao, Fahai

PY - 2009/12/15

Y1 - 2009/12/15

N2 - A series of CoMo/Al2O3-MgO-x (x = [MgO/(Al2O3 + MgO)], weight ratio) catalysts were prepared by incipient wetness impregnation method with urea as chelating agent. The characterization results of UV-vis diffuse reflectance spectroscopy and Raman spectroscopy showed that Mo and Co species were highly dispersed in small clusters. Introduction of a proper amount of MgO into Al2O3 support not only induced new active forms of Mo species formed on the surface of the catalysts but also successfully inhibited the formation of inactive CoAl2O4 or Co3O4 phases, thus significantly improving the hydrodesulfurization activity. Crown

AB - A series of CoMo/Al2O3-MgO-x (x = [MgO/(Al2O3 + MgO)], weight ratio) catalysts were prepared by incipient wetness impregnation method with urea as chelating agent. The characterization results of UV-vis diffuse reflectance spectroscopy and Raman spectroscopy showed that Mo and Co species were highly dispersed in small clusters. Introduction of a proper amount of MgO into Al2O3 support not only induced new active forms of Mo species formed on the surface of the catalysts but also successfully inhibited the formation of inactive CoAl2O4 or Co3O4 phases, thus significantly improving the hydrodesulfurization activity. Crown

KW - AlO-MgO

KW - Hydrodesulfurization

KW - Small cluster

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DO - 10.1016/j.catcom.2009.10.021

M3 - Artículo

AN - SCOPUS:71549171388

SN - 1566-7367

VL - 11

SP - 302

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JO - Catalysis Communications

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IS - 4

ER -

The role of MgO in the formation of surface active phases of CoMo/Al₂O₃-MgO catalysts for hydrodesulfurization of dibenzothiophene

Abstract

Keywords

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