Research progress on active phase of iron-based catalysts for light olefins synthesis from syngas

doi:10.16085/j.issn.1000-6613.2019-0254

Abstract

Abstract:

Recently, the research of iron-based catalysts for synthesis of light olefins from syngas has attracted much attention, but the active phase of the catalysts is controversial. However, it is generally accepted by many researchers that iron carbide is the active phase in Fischer-Tropsch to olefins (FTO). In the paper, the recent research on active phase iron carbide is summarized, and the effect preparation methods, reduction gas, carburizing temperature on iron carbide are emphatically described. In addition, this work elaborates the effect of iron carbide and the crystal facets exposed on the catalyst surface on the catalytic performance and product distribution in FTO process. Therefore, the key point of the future work will focus on further preparation and research the regulation of iron carbide with different structures to the target products. In addition, the research of the effect of iron carbide crystals on the distribution of products is also an important problem to be solved by researchers in the future.

Key words: syngas, catalysts, iron carbide, active phase, light olefins

摘要：

近年来，合成气制低碳烯烃铁基催化剂的研究备受广大研究者关注，但催化剂的活性相备受争议。大多数研究者认为碳化铁是合成气制低碳烯烃的活性相。本文归纳总结了近些年研究者对活性相碳化铁的研究，重点阐述了催化剂及其活性相的制备方法、还原气体、渗碳温度等因素对形成碳化铁的影响以及活性相碳化铁及暴露于催化剂表面的碳化铁晶面对合成气制低碳烯烃催化性能及产物分布的影响。今后工作的重点是进一步制备和研究不同结构的碳化铁活性相对目标产物的调控。此外，碳化铁的晶面对产物分布的影响也是未来的研究方向。

关键词: 合成气, 催化剂, 碳化铁, 活性相, 低碳烯烃

CLC Number:

O643.36

Lingyu WANG,Wenfeng HAN,Huazhang LIU,Xiazhen YANG. Research progress on active phase of iron-based catalysts for light olefins synthesis from syngas[J]. Chemical Industry and Engineering Progress, 2019, 38(11): 4949-4955.

王玲玉,韩文锋,刘化章,杨霞珍. 合成气制低碳烯烃铁催化剂活性相的研究进展[J]. 化工进展, 2019, 38(11): 4949-4955.

Figures/Tables 5

References 41

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