【作者】 张艳； 贾志光； 赵新强； 王延吉；

【Author】 Zhang Yan Jiang Zhiguang Zhao Xiniqiang Wang Ynaji (School of Chemical Engineering ang Technology, Hebei University of Technology, Tianjin, 300130)$$$$

【机构】 河北工业大学化工学院；

【摘要】 评价了金属氧化物催化剂对尿素与1,2 -丙二醇(PG)合成碳酸丙烯酯(PC)反应的催化性能,发现MgO催化剂活性最高,PC收率为77. 8%。确定出从前驱体碱式碳酸镁经高温焙烧为MgO的最佳温度为75 0℃。通过正交实验确定最佳反应条件:反应温度为170℃,MgO催化剂与PG的摩尔比为0 .0 32∶1,PG与尿素的摩尔比为3∶1,反应时间为3h。此时PC收率为91 .5 %。更多还原

【Abstract】 The catalytic performances of a series of metal oxide catalysts in the reaction for synthesis of propylene carbonate (PC) from urea and 1,2-propylene glycol (PG) have been evaluated MgO shows the highest activity and PC yield amounts to 77 8% The optimal calcinations temperature for MgO from magnesium bicarbonate is 750℃ The optimal reaction conditions have been determined by using orthogonal test design: reaction temperature of 170℃, molar ratio of MgO to PG 0 032:1, and molar ratio of PG to urea 3:1,reaction time 3h Under the conditions mentioned above, PC yield reaches 91 5%更多还原