›› 2006, Vol. 6 ›› Issue (4): 656-660.
• 材料工程专栏 • Previous Articles Next Articles
,,WANG lei,ZHANG Xiang-ping,
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李增喜,聂志勤,王蕾,张香平,张锁江
Abstract: The catalysts of Co/Zr-SiO2 were prepared by precipitation and the promoter of Pt was supported by impregnation. The reducibility of the cobalt oxide and the other physicochemical properties of the catalysts were characterized by TPR, TPD, BET and XPS. With the evaluation of the reduction temperature, the reduction degree increased but the surface area of the catalysts and the adsorption property for reactant CO distinctly decreased; The addition of Pt resulted in the improvement of the reducibility by decreasing the reduction temperature of cobalt oxide species. The FT-synthesis has been performed in a quartz fixed-bed reactor, and the experimental results showed that the best activity for promoted catalyst has been found at the reduction temperature of 400℃, in spite of its uncompleted reduction.
Key words: FT synthesis, cobalt, reduction, XPS
摘要: The catalysts of Co/Zr-SiO2 were prepared by precipitation and the promoter of Pt was supported by impregnation. The reducibility of the cobalt oxide and the other physicochemical properties of the catalysts were characterized by TPR, TPD, BET and XPS. With the evaluation of the reduction temperature, the reduction degree increased but the surface area of the catalysts and the adsorption property for reactant CO distinctly decreased; The addition of Pt resulted in the improvement of the reducibility by decreasing the reduction temperature of cobalt oxide species. The FT-synthesis has been performed in a quartz fixed-bed reactor, and the experimental results showed that the best activity for promoted catalyst has been found at the reduction temperature of 400℃, in spite of its uncompleted reduction.
关键词: FT synthesis, cobalt, reduction, XPS
CLC Number:
工艺
;WANG lei;ZHANG Xiang-ping;. Fischer-Tropsch Synthesis over Modified Cobalt Catalysts[J]. , 2006, 6(4): 656-660.
李增喜;聂志勤;王蕾;张香平;张锁江. Fischer-Tropsch Synthesis over Modified Cobalt Catalysts[J]. , 2006, 6(4): 656-660.
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