Design of supported cobalt catalysts with maximum activity for the Fischer-Tropsch synthesis

被引：159

作者：

den Breejen, Johan P. ^{[1
]}

Sietsma, Jelle R. A. ^{[1
]}

Friedrich, Heiner ^{[1
]}

Bitter, Johannes H. ^{[1
]}

de Jong, Krijn P. ^{[1
]}

机构：

[1] Univ Utrecht, Debye Inst NanoMat Sci, NL-3584 CA Utrecht, Netherlands

来源：

JOURNAL OF CATALYSIS | 2010年 / 270卷 / 01期

关键词：

Fischer-Tropsch synthesis; Cobalt catalysts; Particle size distribution; Cobalt on silica; NO calcination; CO HYDROGENATION ACTIVITY; PARTICLE-SIZE; REDUCIBILITY; DISPERSION; SILICA; SELECTIVITY; DECOMPOSITION; NANOPARTICLES; IMPREGNATION; SPECTROSCOPY;

D O I：

10.1016/j.jcat.2009.12.015

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：

The role of the cobalt particle size distribution in the Fischer-Tropsch (FT) reaction for supported Co catalysts was investigated. Using TEM histogram analyses and activity measurements of carbon nanofiber-supported catalysts, the TOF of discrete Co particle sizes was calculated. It was found that cobalt particles of 4.7 +/- 0.2 nm are the most active in the FT reaction (1 bar, 220 degrees C), and a narrow Co particle size distribution is clearly essential to arrive at the maximum activity. We have approached this requirement for maximum FT activity with an 18 wt.% Co/SiO2 catalyst prepared via impregnation, drying and calcination in NO/He. The more narrow Co particle size distribution (4.6 +/- 0.8 nm) in Co/SiO2 led to an activity enhancement of 40% compared to Co/CNF (5.7 +/- 1.4 nm), although some promoting effect of silica could not be excluded. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：146 / 152

页数：7

共 33 条

[1]

ANDERSON JR, 1975, STRUCTURE METALLIC C, P359

[2] COBALT SUPPORT INTERACTIONS - THEIR EFFECTS ON ADSORPTION AND CO HYDROGENATION ACTIVITY AND SELECTIVITY PROPERTIES [J].

BARTHOLOMEW, CH ;

REUEL, RC .

INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1985, 24 (01) :56-61

[3] Fischer-Tropsch synthesis over γ-calumina-supported cobalt catalysts:: Effect of support variables [J].

Borg, Oyvind ;

Erib, Sigrid ;

Blekkan, Edd A. ;

Storsaeter, Solvi ;

Wigum, Hanne ;

Rytter, Erling ;

Holmen, Anders .

JOURNAL OF CATALYSIS, 2007, 248 (01) :89-100

[4] On the Origin of the Cobalt Particle Size Effects in Fischer-Tropsch Catalysis [J].

den Breejen, J. P. ;

Radstake, P. B. ;

Bezemer, G. L. ;

Bitter, J. H. ;

Froseth, V. ;

Holmen, A. ;

de Jong, K. P. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (20) :7197-7203

[5] Cobalt dispersion, reducibility, and surface sites in promoted silica-supported Fischer-Tropsch catalysts [J].

Girardon, J.-S. ;

Quinet, E. ;

Griboval-Constant, A. ;

Chernavskii, P. A. ;

Gengembre, L. ;

Khodakov, A. Y. .

JOURNAL OF CATALYSIS, 2007, 248 (02) :143-157

[6] SIZE DISTRIBUTIONS FOR SUPPORTED METAL-CATALYSTS - COALESCENCE GROWTH VERSUS OSTWALD RIPENING [J].

GRANQVIST, CG ;

BUHRMAN, RA .

JOURNAL OF CATALYSIS, 1976, 42 (03) :477-479

[7] Influence of the Cobalt Particle Size in the CO Hydrogenation Reaction Studied by In Situ X-Ray Absorption Spectroscopy [J].

Herranz, Tirma ;

Deng, Xingyi ;

Cabot, Andreu ;

Guo, Jingua ;

Salmeron, Miquel .

JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (31) :10721-10727

[8] 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

[9] Fischer-Tropsch synthesis: Relations between structure of cobalt catalysts and their catalytic performance [J].

Khodakov, Andrei Y. .

CATALYSIS TODAY, 2009, 144 (3-4) :251-257

[10] Reducibility of cobalt species in silica-supported Fischer-Tropsch catalysts [J].

Khodakov, AY ;

Lynch, J ;

Bazin, D ;

Rebours, B ;

Zanier, N ;

Moisson, B ;

Chaumette, P .

JOURNAL OF CATALYSIS, 1997, 168 (01) :16-25

← 1 2 3 4 →