反应控制相转移催化环氧化端羟基聚丁二烯的研究  

Reaction-controlled Phase-transfer Catalysis for the Epoxidation of HTPB

作　　者：刘军辉[1,2] 张爱平[2] 张毅[2] 刘俊龙[1] 高爽[2] 

机构地区：[1]大连工业大学化工与材料学院,辽宁大连116034 [2]中国科学院大连化学物理研究所清洁催化合成重点实验室,辽宁大连116023

出　　处：《精细化工》2009年第11期1102-1105,共4页Fine Chemicals

基　　金：国家重点基础研究发展规划(973)资助项目(2009CB623505)~~

摘　　要：研究了磷钨杂多酸盐反应控制相转移催化双氧水直接环氧化端羟基聚丁二烯(HTPB)的反应,考察了溶剂、H2O2用量、催化剂用量、反应温度、时间、底物质量浓度等因素对环氧化反应的影响。确定了适宜的反应条件为:1,2-二氯乙烷为溶剂,n(H2O2)∶n(底物双键)=1∶1,n(底物双键)∶n(催化剂)=100∶1,反应温度60℃,反应时间6 h,底物质量浓度65 g/L。最适宜反应条件下产物环氧值达8.74 g.100 g-1,催化剂可循环再利用,并表现出较好的稳定性。Epoxidation of HTPB with hydrogen peroxide catalyzed by quaternary ammonium heteropolyphosphatotungstate was studied.The factors such as the solvents,the amount of H2O2,the amount of catalyst,reaction temperature,reaction time,and the concentration of substrate were investigated.It is found that the optimized conditions are 1,2-dichloroethane as a solvent,n（H2O2）∶n（double bond of substrate）=1∶1,n（double bond of substrate）∶n（catalyst）=100∶1,the concentration of substrate（based on solvent）=65 g/L,60 ℃,6 h.Up to 8.74 g·100 g-1 of the epoxy value was obtained under the optimized conditions and the catalysis can be reused and keep good stability.

关 键 词：反应控制相转移催化 端羟基聚丁二烯 环氧化 

分 类 号：TQ032.4[化学工程]