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KF/MgO催化醇解制备碳酸二甲酯的超声强化研究

Enhancement of ultrasonic on preparation of dimethyl carbonate through alcoholysis catalyzed by KF/MgO

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【作者】 贺玥玥顾晓华潘子鹤成怀刚

【Author】 He Yueyue;Gu Xiaohua;Pan Zihe;Cheng Huaigang;Institute of Resources and Environmental Engineering,Shanxi University,Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes,State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources;Oxiranchem Jiangsu Co.,Ltd.;

【通讯作者】 成怀刚;

【机构】 山西大学资源与环境工程研究所山西低附加值煤基资源利用协同创新中心国家环境保护煤炭废弃物资源化高效利用技术重点实验室江苏奥克化学有限公司

【摘要】 以碳酸乙烯酯和甲醇为原料、KF/MgO为催化剂,制备了碳酸二甲酯,对碳酸乙烯酯醇解制备碳酸二甲酯反应过程中影响碳酸乙烯酯转化率的因素进行了考察,对比了超声波与机械搅拌条件对碳酸乙烯酯转化率的影响。实验结果表明,超声波与机械搅拌相比,超声波能够强化碳酸乙烯酯的醇解反应,可以提高碳酸乙烯酯转化率,使反应稳定时间由90 min缩短为30 min,催化剂的加入量(w)由1.5%减少为1.0%、醇酯摩尔比由9∶1降为6∶1。

【Abstract】 Ehylene carbonate and methanol were used as raw materials and KF/MgO was used as catalyst to synthesize dimethyl carbonate. The effects of various factors on the conversion of ethylene carbonate in the preparation of dimethyl carbonate by alcoholysis were studied and an investigation was conducted to compare the effects of ultrasonic and mechanical stirring conditions on ethylene carbonate conversion. The experimental results show that compared with mechanical stirring,ultrasonic enhanced the alcoholysis reaction of ethylene carbonate significantly,under which the conversion of ethylene carbonate was enhanced. Furthermore,the reaction time was reduced from 90 min to 30 min,the addition amount of catalyst was decreased from 1.5%(w) to 1.0%(w),and alcohol ester molar ratio was decreased from 9∶1 to 6∶1.

【基金】 国家重点研发计划(2018YFB0605804);国家自然科学基金项目(51674162);山西省三晋英才计划和优秀人才科技创新项目(201605D211032)
  • 【文献出处】 石油化工 ,Petrochemical Technology , 编辑部邮箱 ,2019年10期
  • 【分类号】TQ225.52
  • 【被引频次】2
  • 【下载频次】103
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