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Effects of the ratio of Fe to Co over Fe-Co/SiO_2 bimetallic catalysts on their catalytic performance for Fischer-Tropsch synthesis 被引量:2

Effects of the ratio of Fe to Co over Fe-Co/SiO_2 bimetallic catalysts on their catalytic performance for Fischer-Tropsch synthesis
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摘要 The Fe-Co/SiO2 bimetallic catalysts with different ratios of Fe to Co were prepared by aqueous incipient wetness impregnation. The catalysts of 10%Fe:0%Co/SiO2, 10%Fe:6%Co/SiO2, 10%Fe:2%Co/SiO2, 10%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, 2%Fe:10%Co/SiO2 and 0%Fe: 10%Co/SiO2 by mass were tested in a fixed reactor by the Fischer-Tropsch synthesis. Activity and hydrocarbon distribution were found to be determined by the ratio of iron to cobalt of the catalysts. Higher iron content inhibited the activity, whereas higher cobalt content enhanced the activity of the Fe-Co/SiO2 catalysts. On the other hand, for the catalysts of 10%Fe:6%Co/SiO2, 10%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, and 2%Fe:10%Co/SiO2, the total C2-C4 fraction increased (from 10.65% to 26.78%) and C5+ fraction decreased (from 75.75% to 57.63%) at 523 K. Temperature programmed reduction revealed that the addition of cobalt enhanced the reducibility of the Fe-Co/SiO2 catalyst. Metal oxides were present in those catalysts as shown by XRD. The Fe-Co alloy phase was found in the 2%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, 10%Fe: 10%Co/SiO2, 10%Fe:6%Co/SiO2 catalysts and their crystals were perfect. The Fe-Co/SiO2 bimetallic catalysts with different ratios of Fe to Co were prepared by aqueous incipient wetness impregnation. The catalysts of 10%Fe:0%Co/SiO2, 10%Fe:6%Co/SiO2, 10%Fe:2%Co/SiO2, 10%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, 2%Fe:10%Co/SiO2 and 0%Fe: 10%Co/SiO2 by mass were tested in a fixed reactor by the Fischer-Tropsch synthesis. Activity and hydrocarbon distribution were found to be determined by the ratio of iron to cobalt of the catalysts. Higher iron content inhibited the activity, whereas higher cobalt content enhanced the activity of the Fe-Co/SiO2 catalysts. On the other hand, for the catalysts of 10%Fe:6%Co/SiO2, 10%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, and 2%Fe:10%Co/SiO2, the total C2-C4 fraction increased (from 10.65% to 26.78%) and C5+ fraction decreased (from 75.75% to 57.63%) at 523 K. Temperature programmed reduction revealed that the addition of cobalt enhanced the reducibility of the Fe-Co/SiO2 catalyst. Metal oxides were present in those catalysts as shown by XRD. The Fe-Co alloy phase was found in the 2%Fe:10%Co/SiO2, 6%Fe:10%Co/SiO2, 10%Fe: 10%Co/SiO2, 10%Fe:6%Co/SiO2 catalysts and their crystals were perfect.
出处 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2009年第2期232-236,共5页 天然气化学杂志(英文版)
基金 supported by Doctoral Foundation (NO. 20050251006) Scholastic Foundation of Henan University of Science and Technology
关键词 FISCHER-TROPSCH BIMETALLIC IRON COBALT Fischer-Tropsch bimetallic iron cobalt
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  • 1Ma X D, Sun Q W, Cao F H, Ying W Y, Fang D Y. J Natur Gas Chem, 2006, 15(4): 335.
  • 2Curtis V, Nicolaides C P, Coville N J, Hildebrandt D, Glasser D. Catal Today, 1999, 49(1-3): 33.
  • 3Sun S, Fujimoto K, Zhang Y, Tsubaki N. Catal Commun, 2003, 4(8): 361.
  • 4Ming H, Baker B G. Appl Catal, 1995, 123(1): 23.
  • 5Dutta P, Elbashir N O, Manivannan A, Seehra M S, Roberts C B. Catal Lett, 2004, 98(4): 203.
  • 6Wu B S, Tian L, Xiang H W, Zhang Z X, Li Y W. Catal Lett, 2005, 102(3-4): 211.
  • 7Panpranot J, Goodwin Jr J G, Sayari A. J Catal, 2002, 211(2): 530.
  • 8Xu J, Bartholomew C H, Sudweeks J, Eggett D L. Top Catal, 2003, 26(1-4): 55.
  • 9Li S Z, Krishnamoorthy S, Li A W, Meitzner G D, Iglesia E. J Catal, 2002, 206(2): 202.
  • 10van den Berg F R, Craje M W J, van der Kraan A M, Geus J W. Appl Catal A, 2003, 242(2)403.

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