石油化工2013，Vol.42Issue(7)：780-786,7.
Cu-Zr-Co-O催化剂催化乙醇直接合成乙酸乙酯
Direct Synthesis of Ethyl Acetate from Ethanol over Cu-Zr-Co-O Catalysts
摘要
Abstract
Cu-Zr-Co-O catalysts were prepared by reverse titration coprecipitation,normal titration coprecipitation and sol-gel method,separately.The synthesis of ethyl acetate through the dehydrogenation of ethanol on the catalysts was studied.The catalysts were characterized by means of XRD,XPS,N2 physisorption,H2-TPR and NH3-TPD.The influences of prereduction temperature,reaction temperature and GHSV on the catalytic performances of the catalysts were investigated.The characterization results suggested that the Cu-Zr-Co-O catalyst(CP-N(1)) prepared by the reverse titration coprecipitation possessed larger specific surface area,smaller Cu0 particle size and more surface acid sites.The prereduction temperature affects the conversion of ethanol and the selectivity to ethyl acetate evidently due to its effects on the amount and partical size of Cu0 on the catalyst surface.Under the optimized reaction conditions of CP-N(1) prereduced at 300 ℃ as the catalyst,GHSV 1.2 min-1 and reaction temperature 200 ℃,the conversion of ethanol and the selectivity to ethyl acetate reached 85.0％ and 80.2％,respectively.关键词
乙醇/乙酸乙酯/脱氢/铜-锆-钴-氧催化剂Key words
ethanol/ ethyl acetate/ dehydrogenation/ copper-zirconium-cobalt-oxygen catalyst分类
化学化工引用本文复制引用
汤清虎,魏志伟,王京,赵卉茹,赵培正..Cu-Zr-Co-O催化剂催化乙醇直接合成乙酸乙酯[J].石油化工,2013,42(7):780-786,7.基金项目
河南省高校科技创新人才支持计划(2010HASTTT028). （2010HASTTT028）
