用玻璃球负载纳米级SO_4^(2-)/TiO_2固体超强酸催化合成乙酸正丁酯  

Catalytic synthesis of n-butyl acetate with the crystal ball supported nano-sized SO_4^(2-)/TiO_2 solid super acid

作　　者：张萍[1] 刘占荣[1] 武戈[1] 魏雨[2] 

机构地区：[1]石家庄学院化学系,河北石家庄050035 [2]河北师范大学化学学院,河北石家庄050016

出　　处：《化学试剂》2006年第9期567-569,共3页Chemical Reagents

基　　金：河北省自然科学基金资助项目(502154)

摘　　要：用玻璃球负载纳米级SO42-/TiO2固体超强酸催化合成乙酸正丁酯,对催化剂的制备条件和乙酸正丁酯的合成条件进行了研究。在最佳反应条件下,乙酸的转化率为99.3%,催化剂重复使用8次后乙酸的转化率仍高达92.3%。该催化剂选择性好,未发现有副产物生成,看来具有较好的应用前景。The synthesis of n-butyl acetate with the crystal ball supported nano-sized SO4^2-/TiO2 solid super acid as catalysts was studied, including the preparation of catalyst and esterification conditions. Under optimum synthesis condition, the conversion rate of acetic acid was 99.3 %. As a result, after the catalyst was used repeatedly for 8 times （ 3 h one time）, the 3 h conversion rate of acetic acid became down to 92.3 % for the esterificational reaction of acetic acid and n-butanol. The selectivity of catalyst was good and no outgrowth has been found by gas chromatography. It was excellent for the synthesis of n-butyl acetate.

关 键 词：纳米级SO4^2-/TIO2 固体超强酸 催化 乙酸正丁酯 

分 类 号：O643.36[理学—物理化学]