I_2-AlCl_3催化合成四溴苯酐的工艺研究  

Parameter Optimization for Tetrabromophthalic Anhydride Production

作　　者：熊鹰[1] 刘平乐[1] 夏俊[1] 罗和安[1] 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《精细化工中间体》2006年第5期57-59,66,共4页Fine Chemical Intermediates

基　　金：湖南省教育厅资助项目(04C638)

摘　　要：针对国内四溴苯酐生产现状,在对溴化反应过程机理分析的基础上,对反应过程进行优化,得到了较优的反应条件及操作过程:以I2、AlCl3作为反应的复合催化剂,用量为苯酐的2%,采用分段控温缓慢加溴的操作方式,最高反应温度140℃,反应时间5￣6h,四溴苯酐的收率为96%,熔点276.3￣277.2℃,硫酸含量0.13%。In allusion to domestic production status of tetrabromophthalic anhydride （TBPA） , parameter optimization was carried out based on the analysis of the mechanism of bromization, and optimum reaction condition and operation process was obtained. The yield of TBPA can be reached to 96% by using I2 and AlCl3 as composite catalyst in a mass ratio of 2% to phthalic anhydride. The temperature was controlled in section and the bromine was added slowly, and the reaction would be finished in 5-6 hours at the highest temperature of 140℃. Yield of TBPA was 96%, the melting point 276.3-277.2℃, and the sulfuric acid content was 0.13%.

关 键 词：苯酐 溴 发烟硫酸 复合催化剂 四溴苯酐 

分 类 号：TQ314.248[化学工程—高聚物工业]