清洁氧化一步法合成己二酸

采用合成的复合季铵磷钨酸盐为催化剂,以50%双氧水为氧源催化环己烯合成了己二酸,反应结束催化剂能够与反应体系分离和回收套用。考察了反应时间、反应温度、催化剂用量、双氧水与环己烯物质的量比等因素对反应的影响。实验结果表明,在反应温度90～95℃、反应时间8h、n（H2O2）∶n（环己烯）=4.4、n（催化剂）∶n（环己烯）=7∶1000的条件下,己二酸的平均收率达85%,该催化剂重复使用5次后,己二酸产率仍可达到83%。

Synthesis of adipic acid by one-step clean oxidation

Synthesis of adipic acid from cyclohexene was investigated with 50% hydrogen peroxide as oxidant and synthesized compound quaternary ammonium phosphotungstates as catalyst.After reaction,catalyst can be separated from reaction system and be mostly recovered.Efects of catalyst dosage,reaction time and temperature on reaction were studied.The result indicated that,When n(H2O2)∶n(cyclohexene)=4.4,n(catalyst):n(cyclohexene)=7∶1000,reaction temperature was 90～95 ℃ and time was 8h,average yield of adipic acid reached 85% and average recovery of catalyst was 88%.The yield of adipic acid can be still 83% as the catalyst system was used repeatedly 5 times.