环己烯间接水合法制备环己醇技术研究

Indirect Hydration of Cyclohexene for the Synthesis of Cyclohexanol

环己烯水合制备环己醇是十分重要的生产工艺,但现有技术面临环己烯转化率较低的问题.本文利用二氧化硅和氯磺酸反应制备了二氧化硅负载的磺酸催化剂(SiO_(2)-SO_(3)H),考察了其在环己烯间接水合制备环己醇中的应用.该催化剂可以高效催化环己烯与甲酸的反应生成甲酸环己酯,环己烯的转化率为98.0%,甲酸环己酯的选择性为98.0%.在该催化剂作用下,甲酸环己酯水解成环己醇,转化率为90.5%,环己醇的选择性为99.8%.

The hydration of cyclohexene to produce cyclohexanol is a crucial industrial process,however,the current technology is hindered by low conversion rates of cyclohexene.In this study,a SiO_(2)-supported sulfonic acid catalyst(SiO_(2)-SO_(3)H)was synthesized through the reaction between silica and chlorosulfonic acid,and its application in the indirect hydration of cyclohexene to cyclohexanol was investigated.The catalyst demonstrated high efficiency in catalyzing the reaction between cyclohexene and formic acid,resulting in a 98.0%conversion rate of cyclohexene with 98.0%selectivity towards cyclohexyl formate.Furthermore,under the influence of the catalyst,hydrolysis of cyclohexyl formate to produce cyclohexanol achieved a 90.5%conversion rate with 99.8%selectivity towards cyclohexanol.