焙烧硫酸铁铵催化合成季戊四醇双缩苯甲醛  

Study on the Synthesis of Dibenzalpenlpentaerythritol by Ammonium Iron Sulfate of Calcination as Catalyst

作　　者：毛立新[1] 廖德仲[1] 关桂元[1] 罗利[1] 

机构地区：[1]湖南理工学院化学化工系,湖南岳阳414000

出　　处：《化工时刊》2003年第12期39-41,共3页Chemical Industry Times

摘　　要：以硫酸铁铵经 6 0 0℃高温焙烧制得一类新型固体酸催化剂 ,该催化剂在合成季戊四醇双缩苯甲醛中具有较高的催化活性 ,其优化条件是 :苯甲醛与季戊四醇物质的量比为 2 .0 :1,催化剂用量为 5 % (以醇的质量为准 ) ,回流温度83℃ ,反应时间 2 .5h ,在此优化条件下 ,反应产率为 87%。且催化剂容易制备 。NH 4Fe(SO 4) 2·12H 2O was a new type of solid acid catalysts which was prepared by calcination in 600℃ high temperature.The catalyst from calcination had high initial activity in synthesis of dibenzalpenlpentaerythritol.The yields were above 87% under the conditions which amount of substance molar ratio of benzformaldehyde and pentaerytritol was 2.0 to 1,the catalyst is 5%(i,e.,5% of the mass of pentaerythritol), the temperature is 83℃ and the time is 2.5 h.The catalysts could be recovered ealily and used repeatedly for many times.

关 键 词：焙烧 硫酸铁铵 合成 季戊四醇双缩苯甲醛 催化活性 固体酸催化剂 

分 类 号：O625.5[理学—有机化学]