Effect of catalyst pore size on the catalytic performance of silica supported cobalt Fischer-Tropsch catalysts

被引：205
作者：
Song, DC [1 ]
Li, JL [1 ]
机构：
[1] S Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, Coll Chem & Mat SCi, Wuhan 430074, Peoples R China
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2006年 / 247卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Fischer-Tropsch synthesis; cobalt; silica; pore size; particle size;
D O I：
10.1016/j.molcata.2005.11.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of cobalt catalysts supported on silica with different pore size were prepared by incipient wetness impregnation method. N-2 physisorption, XP-D, H-2-TPR, H-2-TPD, DRIFTS and O-2, pulse reoxidation were used to characterize the catalysts. The results showed that the pore size of the support had a significant influence on the CO3O4 Crystallite diameter, catalyst reducibility and Fischer-Tropsch activity. The larger pore could cause the CO/SiO2 to form larger CO3O4 crystallite and decreased its dispersion. Catalysts with different pore size showed different CO adsorption property. The catalysts with pore size of 6-10 nm displayed higher Fischer-Tropsch activity and higher C5+ selectivity, due to the moderate particle size and moderate CO adsorption on the catalysts. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：206 / 212
页数：7
相关论文
共 32 条
[1]  
Anderson RB., 1984, FISCHER TROPSCH SYNT
[2]   Catalytic properties of Co/Al2O3 system for hydrocarbon synthesis [J].
Bechara, R ;
Balloy, D ;
Vanhove, D .
APPLIED CATALYSIS A-GENERAL, 2001, 207 (1-2) :343-353
[3]   Syngas adsorption on precipitated iron catalysts reduced by H2, syngas or CO and on those used for high-pressure FT synthesis by in situ diffuse reflectance FTIR spectroscopy [J].
Bian, G ;
Oonuki, A ;
Kobayashi, Y ;
Koizumi, N ;
Yamada, M .
APPLIED CATALYSIS A-GENERAL, 2001, 219 (1-2) :13-24
[4]   Characterization and catalytic properties of cobalt supported on delaminated ITQ-6 and ITQ-2 zeolites for the Fischer-Tropsch synthesis reaction [J].
Concepción, P ;
López, C ;
Martínez, A ;
Puntes, VE .
JOURNAL OF CATALYSIS, 2004, 228 (02) :321-332
[5]   The Fischer-Tropsch process: 1950-2000 [J].
Dry, ME .
CATALYSIS TODAY, 2002, 71 (3-4) :227-241
[6]   Preparation and characterization of Fischer-Tropsch active Co/SiO2 catalysts [J].
Ernst, B ;
Libs, S ;
Chaumette, P ;
Kiennemann, A .
APPLIED CATALYSIS A-GENERAL, 1999, 186 (1-2) :145-168
[7]   Effect of cobalt precursor and pretreatment conditions on the structure and catalytic performance of cobalt silica-supported Fischer-Tropsch catalysts [J].
Girardon, JS ;
Lermontov, AS ;
Gengembre, L ;
Chernavskii, PA ;
Griboval-Constant, A ;
Khodakov, AY .
JOURNAL OF CATALYSIS, 2005, 230 (02) :339-352
[8]   KETONES FROM MONOCARBOXYLIC ACIDS - CATALYTIC KETONIZATION OVER OXIDE SYSTEMS [J].
GLINSKI, M ;
KIJENSKI, J ;
JAKUBOWSKI, A .
APPLIED CATALYSIS A-GENERAL, 1995, 128 (02) :209-217
[9]   Fischer-Tropsch synthesis: support, loading, and promoter effects on the reducibility of cobalt catalysts [J].
Jacobs, G ;
Das, TK ;
Zhang, YQ ;
Li, JL ;
Racoillet, G ;
Davis, BH .
APPLIED CATALYSIS A-GENERAL, 2002, 233 (1-2) :263-281
[10]   Adsorption properties of cobalt and cobalt-manganese catalysts studied by in situ diffuse reflectance FTIR using CO and CO+H2 as probes [J].
Jiang, M ;
Koizumi, N ;
Ozaki, T ;
Yamada, M .
APPLIED CATALYSIS A-GENERAL, 2001, 209 (1-2) :59-70
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