醛加氢还原法制备三羟甲基丙烷工艺研究  

Technology Research on Aldehyde Hydrogenation for Preparation of Trimethylolpropane

作　　者：张辉[1] 蔡玉[1] 胡昌龙[1] 程爽[1] 郭亚军[1] 郭亚平[1] 

机构地区：[1]上海师范大学生命与环境科学学院化学系,上海200234

出　　处：《广州化工》2013年第6期102-105,共4页GuangZhou Chemical Industry

摘　　要：在催化剂的作用下,甲醛与正丁醛依次经过羟醛缩合和加氢还原两步反应生成三羟甲基丙烷(TMP)。羟醛缩合反应选择三乙胺为催化剂,加氢还原反应选择钯碳作为加氢催化剂,通过改变单一变量法,重点研究影响羟醛缩合反应、加氢还原反应的因素。结果表明甲醛、正丁醛及三乙胺的配比为2.3:1.0:0.55时,TMP收率可达47.5%;羟醛缩合温度65℃,反应4 h,加氢压力为5 MPa,加氢反应温度120℃以及高压反应釜搅拌速率为550 r/min是制备TMP的最适反应条件。With catalyst, formaldehyde and butanal in turn after aldol condensation and hydrogenation reaction, trimethylolpropane （TMP） was synthesized. Aldol condensation reaction used triethylamine as catalyst and hydrogenation re- duction reaction with palladium carbon as the catalyst. The factors influencing aldol condensation reaction and the hydrogenation reduction was studied by changing the single variable. The research showed that when the ratio of formaldehyde, butanal and triethylamine was 2.3 ： 1.0 ： 0.55, yield of TMP can reach 47.5%. The optimal reaction conditions were aldol condensation temperature 65℃ , reaction time 4 h and the hydrogenation pressure 5 MPa, temperature 120℃ and high pressure reaction kettle stirring rate 550 r/min.

关 键 词：三羟甲基丙烷 羟醛缩合 加氢反应 

分 类 号：TQ032.4[化学工程]