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Effects of Al, Si, Ti, Zr Promoters on Catalytic Performance of Iron-Based Fischer–Tropsch Synthesis Catalysts
Catalysis Letters ( IF 2.8 ) Pub Date : 2020-01-27 , DOI: 10.1007/s10562-020-03104-3
Weichao Chou , Peng Wu , Mingsheng Luo , Weizhen Li , Shuo Li

Abstract Precipitated iron catalysts containing structural promoters were prepared and their Fischer–Tropsch synthesis (FTS) performance was tested under the same reaction condition. BET, XRD, H 2 -TPR, and MES were conducted to characterize the phases, structure, morphology, reducibility and carbonization characteristics of the catalysts. It was observed that the reduced catalysts under syngas(H 2 /CO = 5) promoted with Al/Zr generate more Fe 5 C 2 phase than Si/Ti, which showed that Al/Zr promoted catalysts are more easily reduced than the Si/Ti promoted ones. Addition of Zr and Al promoters improved the reduction and carbonization process of iron-based FTS catalysts. FTS performance data showed that the addition of Al and Zr can increase the CO hydrogenation activity compared to Si and Ti. Moreover, these two promoted catalysts also exhibited excellent stability. Graphic Abstract

中文翻译:

Al、Si、Ti、Zr助剂对铁基费托合成催化剂催化性能的影响

摘要 制备了含结构助催化剂的沉淀铁催化剂,并在相同反应条件下测试了其费托合成(FTS)性能。进行BET、XRD、H 2 -TPR和MES表征催化剂的相、结构、形貌、还原性和碳化特性。观察到在合成气(H 2 /CO = 5)下用 Al/Zr 促进的还原催化剂比 Si/Ti 产生更多的 Fe 5 C 2 相,这表明 Al/Zr 促进的催化剂比 Si/提提拔的。Zr和Al助催化剂的加入改善了铁基FTS催化剂的还原和碳化过程。FTS 性能数据表明,与 Si 和 Ti 相比,添加 Al 和 Zr 可以提高 CO 加氢活性。而且,这两种助催化剂也表现出优异的稳定性。图形摘要
更新日期:2020-01-27
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