Enhanced Effect of the Mesoporous Carbon on Iron Carbide Catalyst for Hydrogenation of Dimethyl Oxalate to Ethanol

作者：Meng Cao, Huijiang Huang, Yuntao Zheng, Qiaochu Zhang, Shengping Wang, Rile Ge, Junhu Wang, Yujun Zhao, Xinbin Ma · 发表于：ChemCatChem · 年份：2022 · DOI：10.1002/cctc.202200500 · 被引用次数：8 · 研究领域：Catalysts for Methane Reforming、Catalysis and Hydrodesulfurization Studies、Catalytic Processes in Materials Science

Abstract Due to the low activity of bulk Fe 5 C 2 catalyst in the hydrogenation of dimethyl oxalate to ethanol, a supported Fe 5 C 2 catalyst was designed and prepared with mesoporous carbon as the carrier. For a comparison, two iron carbide catalysts supported on activated carbon and microporous carbon were also prepared. Based on the characterization results of IR, XRD, H 2 ‐TPR, CO‐TPD, XPS and MES, the oxygen‐containing functional groups (especially COOH group) on the surface of the carbon supports inhibit the formation of iron carbides, which are regarded as the active sites and play the key role in the hydrogenation of dimethyl oxalate to ethanol. However, the mesoporous carbon exhibits a more positive effect on the dispersion of iron particles than the other two carbon supports. As a result, the as‐prepared mesoporous catalyst presents an excellent activity (the ethanol yield of 85.8 %) and stability in the hydrogenation of dimethyl oxalate. This work suggests a practical strategy in fabricating a supported iron carbides catalyst for the chemosynthesis of ethanol via DMO hydrogenation from syngas.