石油化工2012，Vol.41Issue(1)：37-40,4.
活化碱式碳酸锌催化尿素与1,2-丙二醇合成碳酸丙烯酯
Synthesis of Propylene Carbonate from Urea and 1, 2-Propylene Glycol over Activated Basic Zinc Carbonate Catalyst
杜伟超 1方美琴 1沈凌云 1徐瑞峰 1方云进1
作者信息
- 1. 华东理工大学化学工程联合国家重点实验室,上海200237
- 折叠
摘要
Abstract
The activated basic zinc carbonate catalysts(AZCH) for synthesis of propylene carbonate(PC) from urea and 1, 2-propylene glycol(PG) were prepared under different calcination conditions. The effects of the calcination conditions on AZCH catalyst activity in the synthesis were studied. The experimental results showed that the activity of AZCH catalyst calcined at 220 ℃ for 2 h was the highest. Under the optimal reaction conditions of reaction temperature 170 ℃, reaction time 2 h, n(PG) : n(urea) 2.5, the catalyst dosage 1%(based on the total mass of the reactants) and 0.04 MPa of vacuum, PC yield reached 94.5%. XRD result showed that there were two crystal phases, ZnO and Zn4CO3(OH)6 · H2O in the catalysts where ZnO acted as the main active component, and the synergistic effect of ZnO and Zn4CO3(OH)6 · H2O promoted the catalytic activity of the catalysts.关键词
碱式碳酸锌催化剂/尿素/1,2-丙二醇/碳酸丙烯酯Key words
basic zinc carbonate catalyst/ urea/ 1, 2-propylene glycol/ propylene carbonate分类
化学化工引用本文复制引用
杜伟超,方美琴,沈凌云,徐瑞峰,方云进..活化碱式碳酸锌催化尿素与1,2-丙二醇合成碳酸丙烯酯[J].石油化工,2012,41(1):37-40,4.
