固体超强酸SO_4^(2-)/Fe_2O_3催化法合成乙酸异戊酯  

Synthesis of iso-pentyl acetate with SO_4^(2-)/Fe_2O_3

作　　者：李建伟[1] 马雪萍[1] 弓彦忠[1] 

机构地区：[1]河南工业大学化学化工学院,河南郑州450052

出　　处：《化学工程师》2006年第9期53-54,共2页Chemical Engineer

摘　　要：用(NH_4)_2SO_4·Fe_2(SO_4)_3·24H_2O直接焙烧的方法制备了固体超强酸催化剂SO_4^(2-)/Fe_2O_3,并催化合成了乙酸异戊酯,考察了固体酸催化剂的最佳合成条件。实验表明：最佳焙烧温度为550℃,最佳焙烧时间为4h。当催化剂用量为2g,乙酸、异戊醇物质的量的比为2．6：1,回流时间2h时,乙酸转化率为76．6%。A solid superacid catalyst, SO4^2-/Fe2O3, was prepared by calcination of （NH4）2SO4· Fe2 （SO4）3·24H2O, and iso - Pentyl acetate was prepared. The preparation conditions of SO4^2-/Fe2O3 have been investigated, that is, the calcining temperature is 550℃ ,the calcining time is 4h.The reaction conditions are that the catalyst is 2.0g,the molar ratio of acetic acid/isopentyl alcohol is 2.6： 1, the reaction time is 2. 0h, the yield of esterification is76.6%.

关 键 词：固体超强酸 酯化作用 乙酸异戊酯 

分 类 号：O621.256.4[理学—有机化学]