摘要
采用Stober法制备SiO2载体,在不同条件下采用浸渍法制备Zr(SO4)2/SiO2催化剂,并用于合成乙酸辛酯,对催化剂进行了表征,对反应条件进行了优化.结果表明,在焙烧温度250℃及Zr(SO4)2负载量20%条件下所制催化剂最稳定且Zr(SO4)2在SiO2载体中分散最均匀,250℃下焙烧3 h催化效果最好.最佳反应条件为催化剂用量为辛醇质量的3%,乙酸与辛醇摩尔比1.2:1,温度120℃,时间3 h,此时辛醇转化率达97.82%,反应选择性达92.53%.
A SiO2 carrier was prepared by Stober method, and Zr（SO4）2/SiO2 catalyst under different loadings and calcination temperatures prepared by impregnation method, which was used for synthesis of octyl acetate. The catalyst was characterized. The results showed that Zr（SO4）2 dispersed well on the surface of SiO2 at the calcinations temperature of 250 ℃ with 20% loading in Zr（SO4）2/SiO2. Under the optimum reaction conditions of Zr（SO4）2/SiO2 with 20% loading, calcining at 250℃ for 3 h, reaction temperature 120 ℃ and reaction time 3 h, n-octanol conversion rate reached 97.82%, and the selectivity to octyl acetate was 92.53%.
出处
《过程工程学报》
CAS
CSCD
北大核心
2015年第2期318-323,共6页
The Chinese Journal of Process Engineering
基金
国家重点基础研究发展规划(973)基金资助项目)编号:2013CB632602)
国家自然科学基金青年科学基金资助项目)编号:21306198)
