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Citation: WAN Hai-Jun, WU Bao-Shan, AN Xia, TAO Zhi-Chao, LI Ting-Zhen, XIANG Hong-Wei, LI Yong-Wang. Structural Properties, Reduction and Carburization Behaviors of Fe/Cu/K/Al₂O₃ Catalyst for Fischer-Tropsch Synthesis[J]. Acta Physico-Chimica Sinica, ;2007, 23(08): 1151-1156. doi: 10.1016/S1872-1508(07)60059-X shu

Structural Properties, Reduction and Carburization Behaviors of Fe/Cu/K/Al₂O₃ Catalyst for Fischer-Tropsch Synthesis

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China

Received Date: 31 January 2007
Available Online: 29 May 2007

An Fe/Cu/K/Al2O3 catalyst for Fischer-Tropsch synthesis (FTS) was prepared by using a combination of co-precipitation and spray-drying method. Thermal gravity (TG), N2 physisorption, X-ray diffraction (XRD), H2 temperature programmed reduction (H2-TPR), CO temperature programmed reduction (CO-TPR), and Mossbauer effect spectroscopy (MES), were used to investigate the effects of different calcination temperatures on the structural properties, reduction, and carburization behaviors of the iron-based catalyst. The results indicated that an increase in calcination temperature facilitated the carbonate decomposition and H2O removal and promoted the reduction of the catalyst. With further increasing the calcination temperature, the BET surface area of the catalyst decreased, and the size of the catalyst crystallite and the average pore diameter increased. Furthermore, high calcination temperature enhanced the metal-support interaction, which weakened the promotional effect of CuO and K2O, and therefore, severely suppresseed the reduction and carburization behaviors of the catalyst.
- Fischer-Tropsch synthesis; Iron-based catalyst; Calcination temperature; Structural properties; Reduction behavior; Carburization behavior
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Structural Properties, Reduction and Carburization Behaviors of Fe/Cu/K/Al2O3 Catalyst for Fischer-Tropsch Synthesis

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通讯作者: 陈斌, bchen63@163.com

Structural Properties, Reduction and Carburization Behaviors of Fe/Cu/K/Al₂O₃ Catalyst for Fischer-Tropsch Synthesis