文献类型：期刊文献

英文题名：Cation-Exchange Resin Catalyzed Ketalization Reaction of Cyclohexanone with 1,4-Butanediol: Thermodynamics and Kinetics

作者：Qian, Jia[1];Qiu, Minqian[1];Zeng, Zuoxiang[1];Xue, Weilan[1];Xu, Jumei[1]

机构：[1]East China Univ Sci & Technol, Inst Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：57

期号：14

起止页码：4841

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20181605024988);WOS:【SCI-EXPANDED(收录号:WOS:000430155700010)】；

语种：英文

外文关键词：Particle size - Thermodynamic properties - Atmospheric pressure - Catalysis - Catalyst activity - Ion exchange resins - Positive ions - Kinetics - Molar ratio

摘要：The thermodynamics and kinetics for the ketalization reaction of cydohexanone with 1,4-butanediol catalyzed by 732 cation-exchange resin were studied for the first time. The reaction equilibrium compositions were obtained from 293.15 to 333.15 K at atmospheric pressure, and the equilibrium constants was estimated using the UNIFAC model. The thermodynamic properties of the ketalization reaction were evaluated: Delta H degrees = -12.85 kJ mol(-1), Delta G degrees = -1.04 kJ mol(-1), Delta S degrees = -39.61 J K-1 mol(-1). The influences of various experimental parameters like agitation speed, initial molar ratio of reactants, temperature, catalyst loading, and particle size on the conversion of limiting reactant were studied. Different kinetic models were tested against the experimentally measured kinetic data and the results show that the Eley-Rideal model with chemisorption of 1,4-butanediol on the active sites predict the kinetics best. The E. value for the overall ketalization reaction is found to be 43.89 kJ mol(-1).