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fe3o4纳米催化剂的制备及其f-t合成性能研究

, PP. 839-845

Keywords: fe3o4纳米催化剂,晶体形貌,费托合成

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Abstract:

?基于溶剂热合成体系,制备了不同形貌的fe3o4微球和纳米片催化剂,考察了水热合成条件对fe3o4晶粒形貌的影响,并研究了fe3o4纳米催化剂的费托合成(f-t)性能。结果表明,成核和晶体生长速率是控制fe3o4晶体形貌的关键。与传统的沉淀铁催化剂相比,fe3o4纳米催化剂更容易还原和向活性相转变,因此,具有更高的f-t反应活性、低碳烯烃选择性及c5+选择性;fe3o4微球催化剂比纳米片催化剂更易维晶粒的稳定,具有更高的反应活性和稳定性。

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