介孔碳基固体磷酸催化合成乙酸乙酯  

Synthesis of ethyl acetate catalyzed by mesoporous carbon-based solid phosphoric acid

作　　者：杨媛媛 曾丹林 王荣 覃荣华 柯萍 沈康文 YANG Yuan-yuan;ZENG Dan-lin;WANG Rong;QIN Rong-hua;KE Ping;SHEN Kang-wen(Hubei Key Laboratory of Coal Conversion and New Carbon Material,School of ChemicalEngineering and Technology,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学化学与化工学院湖北省煤转化与新型炭材料重点实验室,湖北武汉430081

出　　处：《应用化工》2021年第5期1249-1253,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(21473126);湖北省教育科学规划课题(2016GB023)。

摘　　要：以介孔碳微球为载体,采用磷酸直接浸渍法制备了介孔碳基固体磷酸,通过SEM、FTIR、XRD等方法对样品进行表征。结果表明,在磷酸化时间为6 h、磷酸化温度为180℃、固液比为1∶20时,固体酸的酸量达到最优(2.088 mmol/g);以乙酸及乙醇的酯化反应作为探针反应,在醇酸摩尔比为3∶1、反应时间为4 h、催化剂用量为乙酸质量的35%时,酯化率达到81.9%。Mesoporous carbon microspheres were used as carrier,mesoporous carbon-based solid phosphoric acid were synthesized with direct impregnation method,and samples were characterized by SEM,FTIR,XRD,etc.The results showed that the acidity of solid acid catalyst is optimal(2.088 mmol/g),when the phosphorylation time is 6 h,the phosphorylation temperature is 180℃,solid-liqud ratio is 1∶20,the esterification reaction of acetic acid and ethanol used as a probe reaction,the esterification rate reached 81.9%when the alkyd ratio was 3∶1,the reaction time was 4 h,and the amount of catalyst was 35%by mass of acetic acid.

关 键 词：介孔碳 固体酸 磷酸化 酯化 应用 

分 类 号：TQ426[化学工程]