文献类型：期刊文献

英文题名：In Situ DRIFTS Study of Homologous Reaction of Methanol and Higher Alcohols Synthesis over Mn Promoted Cu-Fe Catalysts

作者：Qian, Weixin[1];Wang, Hao[1];Xu, Yanbo[1];Yang, Xiaoli[2];Zhai, Guangwei[3];Zhang, Haitao[1];Ma, Hongfang[1];Sun, Qiwen[3];Ying, Weiyong[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China;[3]State Key Lab Coal Liquefact & Coal Chem Technol, Shanghai 201203, Peoples R China

年份：2019

卷号：58

期号：16

起止页码：6288

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20191606804770);WOS:【SCI-EXPANDED(收录号:WOS:000466053500011)】；

基金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 21706068), the National High Technology Research and Development Plan of China (863 plan, 2011AA05A204), and the Fundamental Research Funds for the Central Universities (No. 222201917013).

语种：英文

外文关键词：Manganese - Catalyst selectivity - Methanol - Copper compounds - Copper alloys - Iron alloys - Carbides - Binary alloys - Carbon

摘要：The homologous reactions of methanol and higher alcohols synthesis over Mn promoted Cu-Fe catalysts were investigated by in situ DRIFTS, chemical trapping, H-2-TPR, CO-TPD, ICP, and XRD. The results showed that the adsorbed CO on iron carbide would contribute to the production of methylene, which increased the probability of the carbon chain growth in the HAS process. Moreover, the results of in situ DRIFTS indicated that homologous reaction of methanol, during which process methanol was oxidized to generate formate species which could be inserted by methylene and resulted in the formation of the acid and anhydride species with more cabon atoms and finally led to the formation of alcohols, existed in the HAS process and will apparently affect the synthesis of higher alcohols. Furthermore, the appropriate addition of Mn could facilitate the carbon chain growth and increase the selectivity to C-2(+) alcohols on a Cu-Fe based catalyst.