期刊论文

中文

化学试剂

0258-3283

2007

29

2

69-71,74

10.3969/j.issn.0258-3283.2007.02.002

湖北省自然科学基金资助项目（2005ABA053）.

本校为第一机构

报道了以分子筛MCM-48负载硅钨酸H_4SiW_(12)O_(40)/ MCM-48为催化剂,通过丁酮和1,2-丙二醇反应合成了丁酮-1,2-丙二醇缩酮.探讨了H_4SiW_(12)O_(40)/MCM-48对缩酮反应的催化活性,较系统地研究了酮醇物质的量比、催化剂用量、反应时间诸因素对产品收率的影响.实验表明:H_4SiW_(12)O_(40) /MCM-48是合成丁酮-1,2-丙二醇缩酮的良好催化剂,在n(丁酮):n(1,2- 丙二醇)=1:1.6,催化剂用量为反应物料总质量的0.6%,环己烷为带水剂,反应时间45 min的优化条件下,丁酮-1,2-丙二醇缩酮的收率可达91.9%.

Butanone-1,2-propanediol ketal was synthesized from butanone and 1,2-propanediol in the presence of H4SiW12O40/ MCM-48. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are as follows： The molar ratio of 1,2-propanediol to butanone was 1.6：1 ; the quantity of catalyst was equal to 0.6% of feedstocks, the reaction temperature was 78 - 110 ℃, and the reaction time was 45 min. The test results have shown that H4SiW12O40/MCM-48 is an excellent catalyst for synthesizing b...