文献类型：期刊文献

英文题名：Catalytic hydrocarboxylation of acetylene to acrylic acid using Ni2O3 and cupric bromide as combined catalysts

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：2014

卷号：396

起止页码：77

外文期刊名：Journal of Molecular Catalysis A: Chemical

收录：EI(收录号：20144800243449)

语种：英文

外文关键词：Nickel oxide - Lighting - Acetylene - Carboxylic acids - Catalyst activity

摘要：A non-petroleum route to produce acrylic acid was investigated through hydrocarboxylation of acetylene with CO and water in the presence of Ni2O3 and cupric bromide as combined catalysts. The activity of Ni2O3 was compared with various homogeneous catalysts; the effect of initial total pressure, reaction temperature, molar ratio of CO/C2H2, the volume ratio of solvent/water, the catalyst amount and the role of promoters have been studied in detail. It was found that the acrylic acid space-time-yield as high as 764.6 mol AA/(mol Ni h) was obtained under the optimal experimental conditions. The Ni2O3 catalyst could be reused at least five times without obvious loss of activity. The characterization of recovered catalysts by XRD, XPS, SEM and TG-DTG revealed that the state of nickel remains unchanged during the reaction, and there are three types of soft coke deposited on the surface of the catalyst. The catalysts can be regenerated through calcination within 400 °C according to TG curve. ? 2014 Elsevier B.V. All rights reserved.