Jun Du, Jing Shi, Zhengfei Li, Zuohua Liu, Xing Fan, Changyuan Tao
{"title":"Ionic liquid mediated CO2 activation for DMC synthesis","authors":"Jun Du, Jing Shi, Zhengfei Li, Zuohua Liu, Xing Fan, Changyuan Tao","doi":"10.1016/S1003-9953(11)60393-9","DOIUrl":null,"url":null,"abstract":"<div><p>Promoted catalytic reaction between methanol and CO<sub>2</sub> for dimethyl carbonate (DMC) synthesis is conducted over K<sub>2</sub>CO<sub>3</sub>/CH<sub>3</sub>I catalyst in the presence of ionic liquid under microwave irradiation. The effect of ionic liquids incorporated with microwave irradiation on the yield of DMC is investigated. DMC was found to form at lower temperature in a relative short time, which indicated an enhanced catalytic process by ionic liquid. Among the ionic liquids used, 1-butyl-3-methylimidazolium chloride is the most effective promoter. Density functional theory calculations indicate that CO<sub>2</sub> bond lengths and angles changed due to the molecular interaction of ionic liquid and CO<sub>2</sub>, resulting in the activation of CO<sub>2</sub> molecules and consequently the acceleration of reaction rate.</p></div>","PeriodicalId":56116,"journal":{"name":"Journal of Natural Gas Chemistry","volume":"21 4","pages":"Pages 476-479"},"PeriodicalIF":0.0000,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1003-9953(11)60393-9","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Natural Gas Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1003995311603939","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
Abstract
Promoted catalytic reaction between methanol and CO2 for dimethyl carbonate (DMC) synthesis is conducted over K2CO3/CH3I catalyst in the presence of ionic liquid under microwave irradiation. The effect of ionic liquids incorporated with microwave irradiation on the yield of DMC is investigated. DMC was found to form at lower temperature in a relative short time, which indicated an enhanced catalytic process by ionic liquid. Among the ionic liquids used, 1-butyl-3-methylimidazolium chloride is the most effective promoter. Density functional theory calculations indicate that CO2 bond lengths and angles changed due to the molecular interaction of ionic liquid and CO2, resulting in the activation of CO2 molecules and consequently the acceleration of reaction rate.
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