石油化工2017，Vol.46Issue(5)：552-557,6.DOI:10.3969/j.issn.1000-8144.2017.05.006
CaO-ZnO固体碱催化剂的制备及其催化大豆油酯交换反应的性能
Preparation of CaO-ZnO solid base catalysts and their catalytic performances for transesterification of soybean oil
付希 1王宜涛 1张月 1田静宇 1马时运 1侯凯湖1
作者信息
- 1. 河北工业大学 化工学院,天津 300130
- 折叠
摘要
Abstract
CaO-ZnO solid base catalysts were prepared by the sol-gel method and used in the transesterification of soybean oil with methanol. The catalysts and their precursor were characterized by means of SEM,TG and XRD. The effects of Ca/Zn molar ratio,calcination temperature and calcination time on the performances of the catalysts were investigated. The conditions of the transesterification were optimized. The results showed that the large pores in the catalysts were favorable to the oil molecules entering,so the active sites could be utilized effectively. The suitable conditions for the catalyst preparation were as follows Ca/Zn molar ratio 1.0,calcination temperature 750℃ and calcination time 4 h. The yield of glycerol in the transesterification over the above catalyst was more than 90％ under the conditions of methanol/oil molar ratio 30,catalyst/oil mass ratio 0.06,reaction temperature 70℃and reaction time 90 min. After it was reused 5 times,the catalytic performance of the catalyst was not decreased evidently.关键词
CaO-ZnO固体碱催化剂/溶胶凝胶法/大豆油/甲醇/酯交换Key words
CaO-ZnO solid base catalyst/sol-gel method/soybean oil/methanol/transesterification分类
化学化工引用本文复制引用
付希,王宜涛,张月,田静宇,马时运,侯凯湖..CaO-ZnO固体碱催化剂的制备及其催化大豆油酯交换反应的性能[J].石油化工,2017,46(5):552-557,6.
