Breaking the dispersion-reducibility dependence in oxide-supported cobalt nanoparticles

被引:92
作者
Martinez, Agustin [1 ]
Prieto, Gonzalo [1 ]
机构
[1] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Valencia 46022, Spain
关键词
cobalt catalyst; delaminated zeolite; ITQ-2; Fischer-Tropsch; reducibility;
D O I
10.1016/j.jcat.2006.11.002
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
Cobalt metal nanoparticles ca. 4-5 nm in size synthesized in the core of reverse n-ficelles and supported on surface-protected delaminated ITQ-2 zeolite display a very narrow particle size distribution and a high reducibility typical of larger particles. The methodological preparation approach presented here allows breaking of the dispersion-reducibility dependence inherent to very small cobalt particles supported on oxidic carriers, thereby overcoming long-lasting difficulties in studying particle size effects in highly dispersed cobalt-based Fischer-Tropsch catalysts. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:470 / 476
页数:7
相关论文
共 19 条
[1]   Characterization and catalytic behavior of Co/SiO2 catalysts:: Influence of dispersion in the Fischer-Tropsch reaction [J].
Barbier, A ;
Tuel, A ;
Arcon, I ;
Kodre, A ;
Martin, GA .
JOURNAL OF CATALYSIS, 2001, 200 (01) :106-116
[2]   Cobalt particle size effects in the Fischer-Tropsch reaction studied with carbon nanofiber supported catalysts [J].
Bezemer, GL ;
Bitter, JH ;
Kuipers, HPCE ;
Oosterbeek, H ;
Holewijn, JE ;
Xu, XD ;
Kapteijn, F ;
van Dillen, AJ ;
de Jong, KP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (12) :3956-3964
[3]   Delaminated zeolite precursors as selective acidic catalysts [J].
Corma, A ;
Fornes, V ;
Pergher, SB ;
Maesen, TLM ;
Buglass, JG .
NATURE, 1998, 396 (6709) :353-356
[4]  
Dry M. E., 1990, CATAL TODAY, V6, P183, DOI DOI 10.1016/0920-5861(90)85002-6
[5]   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
[6]   EFFECT OF PARTICLE-SIZE ON CO HYDROGENATION ACTIVITY OF SILICA SUPPORTED COBALT CATALYSTS [J].
HO, SW ;
HOUALLA, M ;
HERCULES, DM .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16) :6396-6399
[7]   Design, synthesis, and use of cobalt-based Fischer-Tropsch synthesis catalysts [J].
Iglesia, E .
APPLIED CATALYSIS A-GENERAL, 1997, 161 (1-2) :59-78
[8]   FISCHER-TROPSCH SYNTHESIS ON COBALT AND RUTHENIUM - METAL DISPERSION AND SUPPORT EFFECTS ON REACTION-RATE AND SELECTIVITY [J].
IGLESIA, E ;
SOLED, SL ;
FIATO, RA .
JOURNAL OF CATALYSIS, 1992, 137 (01) :212-224
[9]   Pore size effects in Fischer Tropsch synthesis over cobalt-supported mesoporous silicas [J].
Khodakov, AY ;
Griboval-Constant, A ;
Bechara, R ;
Zholobenko, VL .
JOURNAL OF CATALYSIS, 2002, 206 (02) :230-241
[10]   PROPERTIES OF CATALYSTS PREPARED BY PYROLYSIS OF CO2(CO)8 ON SILICA CONTAINING SURFACE TI IONS [J].
LISITSYN, AS ;
GOLOVIN, AV ;
KUZNETSOV, VL ;
YERMAKOV, YI .
JOURNAL OF CATALYSIS, 1985, 95 (02) :527-538