Tuning the surface carbonaceous species in syngas-to-olefin reaction by metal-support interaction: A Fe-Mn-Al ternary system study

被引：4
作者：
Ding, Xiaoxu [1 ]
Yang, Zixu [1 ]
Han, Yi-Fan [1 ,2 ]
机构：
[1] East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[2] Zhengzhou Univ, Engn Res Ctr Adv Funct Mat Mfg, Minist Educ, Zhengzhou 450001, Peoples R China
来源：
APPLIED CATALYSIS A-GENERAL | 2023年 / 666卷
基金：
中国国家自然科学基金;
关键词：
Syngas; Lower olefins; Bimetallic support; Metal-support interactions; Carbon deposition; FISCHER-TROPSCH SYNTHESIS; LIGHT OLEFINS; CATALYST DEACTIVATION; IRON CATALYSTS; MANGANESE; PHASE; ZINC; HYDROGENATION; CARBURIZATION; HYDROCARBONS;
D O I：
10.1016/j.apcata.2023.119405
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fabrication of active iron carbides is essential for CO dissociation and carbon chain growth, but also faces a challenge of controlling the rate of carbon deposition to avoid rapid deactivation. In this context, we synthesized a Mn-Al supported Fe catalysts exhibiting low carbon deposits by carefully controlling the metal-support interaction. Al may enhance the hydrothermal stability of FeCx, and facilitate the hydrogenation and desorption of hydrocarbons. These effects reduce the amount of carbon precursors on the surface so that the carbon coupling ability not only in carbon deposits but also in hydrocarbons can be weakened, and the Fe/Mn2Al1 exhibits the highest conversion (12.5 %) of CO and C2-4
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页数：14
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