New method for the preparation of nonuniform distributed Co/SiO2catalysts

Jingwei Li; Yunjie Ding; Xianming Li; Guiping Jiao; Tao Wang; Weimiao Chen; Hongyuan Luo

doi:10.1039/B813641F

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New method for the preparation of nonuniform distributed Co/SiO₂catalysts†

Jingwei Li,^ac Yunjie Ding,*^ab Xianming Li,^ac Guiping Jiao,^ac Tao Wang,^a Weimiao Chen^a and Hongyuan Luo^a

Author affiliations

* Corresponding authors

^a Laboratory of Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China
E-mail: dyj@dicp.ac.cn
Fax: (86)-411-84379143
Tel: (86)-411-84379143

^b State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China

^c Graduate School of the Chinese Academy of Science, Chinese Academy of Science, Beijing, China

Abstract

Egg-shell, egg-yolk and egg-white types of Co/SiO₂catalysts were prepared by utilizing entrapped air to inhibit the entrance of impregnation or leaching solution into the cores of catalyst pellets during the preparation procedure; the entrapped air played the important role because the capillary pressure was reduced to a suitable range by adjusting the concentration of ethanol in the impregnation or leaching solution for a hydrophobized silica surface.

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Supplementary files

Experimental details of silanization of silica andFischer–Tropsch synthesis reaction, the calculation procedurefor the surface coverage ratios of samples by trimethylsilylgroups, and IR spectra and physical adsorption results of S1 andMS PDF (322K)

Article information

DOI: https://doi.org/10.1039/B813641F
Article type: Communication
Submitted: 05 Aug 2008
Accepted: 12 Sep 2008
First published: 25 Sep 2008

Download Citation

Chem. Commun., 2008, 5954-5956

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New method for the preparation of nonuniform distributed Co/SiO₂catalysts

J. Li, Y. Ding, X. Li, G. Jiao, T. Wang, W. Chen and H. Luo, Chem. Commun., 2008, 5954 DOI: 10.1039/B813641F

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Chemical Communications