草酸铈水合物催化制备苯乙酮工艺条件研究  

Study on the process conditions for the catalytic preparation of acetophenone by cerium oxalate hydrate

作　　者：杨博爱 胡一凡 李平 王艳 陈新华 张忠洁[3] 陈祥迎 YANG Bo-ai;HU Yi-fan;LI Ping;WANG Yan;CHEN Xin-hua;ZHANG Zhong-jie;CHEN Xiang-ying(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Jiaxian Functional Additives Co.,Ltd.,Bengbu 233002,China;School of Materials Science and Engineering,Anhui University,Hefei 230601,China)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009 [2]安徽佳先功能助剂股份有限公司,安徽蚌埠233002 [3]安徽大学材料科学与工程学院,安徽合肥230601

出　　处：《应用化工》2023年第3期734-738,共5页Applied Chemical Industry

基　　金：国家自然科学基金资助项目(51602003)。

摘　　要：以草酸铈水合物催化氧化乙苯制备苯乙酮,探究反应温度、反应时间对乙苯转化率以及苯乙酮收率的影响,利用固定靶X射线衍射仪(XRD)、同步热分析仪(TG)、X射线光电子能谱仪(XPS)对滤渣进行定性分析,探究催化剂循环稳定性。结果表明,该体系下最佳工艺条件为:催化剂用量2%(摩尔百分比),反应温度120℃,反应时间24 h。此时,乙苯转化率53.68%,苯乙酮选择性55.03%;滤渣洗涤后仍为草酸铈,循环5次后,催化活性基本不变。Acetophenone was prepared by catalytic oxidation of ethylbenzene with cerium oxalate hydrate.The influence of reaction temperature,reaction time on ethylbenzene conversion and acetophenone yield was investigated.The filter residue was qualitatively analyzed by fixed target X-ray diffraction(XRD),synchronous thermal analyzer(TG)and X-ray photoelectron spectroscopy(XPS)to explore the catalyst cycle stability.The results show that the optimum reaction conditions are as follows:catalyst dosage 2%(mole percentage),reaction temperature 120℃,reaction time 24 h.At this time,the conversion of ethylbenzene reach 53.68%and the selectivity of acetophenone is 55.03%.After washing and characterization,the residue was proved to be cerium oxalate,and the catalytic activity was basically unchanged after 5 cycle experiments.

关 键 词：苯乙酮 草酸铈水合物 乙苯 可循环 

分 类 号：TQ032.4[化学工程]