期刊
CATALYSIS TODAY
卷 69, 期 1-4, 页码 227-232出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0920-5861(01)00373-X
关键词
monolithic catalyst; Fischer-Tropsch synthesis; Co-Re/gamma-Al2O3
Monolithic structures made of cordierite, gamma -Al2O3 and steel have been prepared as catalysts and tested for Fischer-Tropsch activity. The monoliths made of cordierite and steel were washcoated with a 20 wt.% Co-1 wt. % Re/gamma -Al2O3 Fischer-Tropsch catalyst whereas the gamma -Al2O3 monoliths were made by direct impregnation with an aqueous solution of the Co and Re salts resulting in a loading of 12 wt.% Cc and 0.5 wt.% Re. The activity and selectivity of the different monoliths were compared with the corresponding powder reserved. Higher washcoat loadings resulted in decreased C5+ selectivity and olefin/paraffin ratios due to increased transport limitations. The impregnated gamma -Al2O3 monoliths also showed similar C5+ selectivities as powder catalysts of small particle size (38-53 mum). Lower activities were observed with the steel monoliths probably due to experimental problems. (C) 2001 Elsevier Science B.V. All rights reserved.
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