碳纳米管担载硫酸铈催化合成丙酸丁酯  

Catalytic Synthesis of n-butyl Propionate by Multiple-Walled Carbon nanotube Loaded Cerous Sulfate

作　　者：李岂凡[1] 肖琳[1] 蒋柏泉[1] 王敏炜[1] 叶志强[1] 

机构地区：[1]南昌大学环境与化学工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2008年第4期329-332,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省科技厅重点攻关项目(2005)

摘　　要：以多壁碳纳米管作载体担载硫酸铈催化合成丙酸丁酯。分别采用单因素和正交实验方法考察了醇酸摩尔比、硫酸铈质量分率和反应时间等主要因素对丙酸丁酯得率的影响,并确定了最佳工艺条件为:醇酸摩尔比1.5:1、硫酸铈质量分率15%和反应时间70 min。在最佳工艺条件下,丙酸丁酯得率可高达96.7%。与未担载硫酸铈相比,碳纳米管担载硫酸铈具有催化活性高、催化剂用量少、重复使用率好和丙酸丁酯得率高等显著优点。Multiple-walled carbon Nanotubes were used as carrier to load cerous sulfate catalyst for catalytic synthesis of n - butyl propionate Single factor and orthogonal experiment methods were applied to investigate the effects of the molar ratio of butyl alcohol to propionic acid , cerous sulfate mass fraction and reaction time on the conversion of propionic acid and the optimal technical conditions were determined as：ratio of butyl alchhol and propionic acid 1.5 ： 1, cerous sulfate mass fraction 15% and reaction time 70 min. Under the optimal technical conditions the conversion of propionic acid reached 96.7%. Compared with the unloaded cerous sulfate, the multiplewalled carbon nanotube loaded cerous sulfate possessed some obvious advantages of higher catalytic activity, less use level and higher yield of n - buryl propionate .

关 键 词：多壁碳纳米管 丙酸丁酯 硫酸铈 催化剂 合成 

分 类 号：TQ225.241[化学工程—有机化工]