One-pot synthesis of dimethyl carbonate in supercritical CO2

被引：0
作者：
机构：
[1] Hangzhou Vocation and Technical College, Hangzhou
[2] College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou
[3] Hangzhou Zheda Spring Environmental Protection Co., Ltd, Hangzhou
来源：
Lin, Chun-Mian | 1600年 / Zhejiang University卷 / 28期
关键词：
Carbon dioxide; Dimethyl carbonate; Methanol; Propylene oxide; Supercritical;
D O I：
10.3969/j.issn.1003-9015.2014.06.024
中图分类号：
学科分类号：
摘要：
The synthesis of dimethyl carbonate (DMC) in supercritical carbon dioxide is important for resourcization of carbon dioxide and green synthesis. The synthesis of DMC were studied with carbon dioxide, propylene oxide (PO), and methanol as raw material, potassium methoxide (CH3OK) as catalyst, calcium chloride (CaCl2) as dehydration agent. The effects of factors such as the ratio of VCH3OH:VPO(1~12), stirring speed (0~500 r·min-1), pressure (5.0~10.0 MPa), temperature (110~190℃) and reaction time (0.25~3.0 h) on the synthesis of DMC were investigated. In addition, a possible reaction mechanism of one-pot synthesis of dimethyl carbonate on CH3OK was proposed. The results show that the conversion of methanol and the yield of DMC could reach 22.0% and 45.5% respectively under optimized reaction conditions (VCH3OH:VPO=10:1, stirring speed 300 r·min-1, pressure 7.0 MPa, temperature 140℃, reaction time 1 h). ©, 2014, Zhejiang University. All right reserved.
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页码：1334 / 1339
页数：5
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