离子交换法制备的Cu/SiO_2催化剂上乙醇一步法合成乙酸乙酯  

The Direct Transformation of Ethanol to Ethyl Acetate over Cu/SiO_2 Catalyts Prepared by Ion Exchange

作　　者：于雪[1] 陈洁 张宏庆 张跃伟[4] 

机构地区：[1]吉林化工学院科学技术管理处,吉林吉林132022 [2]长春市公安司法鉴定中心,吉林长春130000 [3]中国石油吉林石化分公司乙二醇厂,吉林吉林132022 [4]吉林化工学院化学与制药工程学院,吉林吉林132022

出　　处：《吉林化工学院学报》2015年第11期8-11,共4页Journal of Jilin Institute of Chemical Technology

摘　　要：采用离子交换法制备了Cu/SiO_2催化剂,并考察了催化剂的制备条件对Cu/SiO_2催化剂在乙醇一步法合成乙酸乙酯反应性能的影响.XRD,FTIR,H2-TPR,NH3-TPD表征结果表明,延长搅拌时间不仅能够提高铜的负载量,还有利于页硅酸铜物种的形成.经过还原处理页硅酸铜可以被还原为Cu^+,为催化剂表面提供一定的L酸中心.反应活性结果表明,搅拌时间为1week的催化剂性能要优于搅拌时间为24h的催化剂.Cu / Si O2 catalysts were prepared by ion exchange method,the effects of preparation condition was investigated during direct transformation of ethanol to ethyl acetate. Characterization by XRD,FTIR,H2-TPR,NH3-TPD showed that extend the stirring time can not only improve the load of copper,but conducive to the formation of copper phyllosilicate which provide access to the Lewis acidic Cu＋species. It was found that the performance of catalyst with stirring 1week was better than the catalyst with stirring 24 h.

关 键 词：乙醇 乙酸乙酯 离子交换法 

分 类 号：O643[理学—物理化学]