文献类型：期刊文献

英文题名：Activity and sediments study for the hydrocarboxylation of acetylene with carbon monoxide to acrylic acid on Ni-Cu homogeneous catalyst

作者：Lin, Tie-Jun[1]; Meng, Xuan[1]; Shi, Li[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2013

卷号：52

期号：39

起止页码：14125

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20134216855658)

语种：英文

外文关键词：Carbon monoxide - Residence time distribution - Particle size - Catalysts - Sediments - Copper compounds - Carbides - Carbon nanofibers - Lighting - Amorphous carbon - Binary alloys - Particle size analysis - Copper alloys

摘要：Solid sediment is a key problem in the industrial-scale production of acrylic acid by hydrocarboxylation of acetylene under high temperature and pressure. The activity and factors for the formation of sediments have been studied. Experiments demonstrate that 80% yield of acrylic acid was achieved, and the sediments were mainly caused by the concentration of Cu2+ under a certain amount of acetylene initial partial pressure. The two kinds of sediments have different particle size distribution and different particle morphology, but both contain carbon nanofibers. SEM-EDXS, Raman spectra, XRD, and elemental analysis indicate three types of coke (i.e., polymeric, filamentous, and graphitic) and three carbon species (i.e., amorphous carbon, carbide, and graphite). It is generally accepted that residence time, reaction temperature, and distribution of catalyst concentration have an impact on sediment formation and side reactions. ? 2013 American Chemical Society.