Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol at Room Temperature Using Imidazolium Hydrogen Carbonate Ionic Liquid as a Recyclable Catalyst and Dehydrant

被引：93

作者：

Zhao, Tianxiang ^{[1
]}

Hu, Xingbang ^{[1
]}

Wu, Dongsheng ^{[1
]}

Li, Rui ^{[1
]}

Yang, Guoqiang ^{[1
]}

Wu, Youting ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

来源：

CHEMSUSCHEM | 2017年 / 10卷 / 09期

基金：

中国国家自然科学基金;

关键词：

carbon dioxide fixation; density functional calculations; homogeneous catalysis; ionic liquids; reaction mechanisms; N-HETEROCYCLIC CARBENES; HETEROGENIZED HOMOGENEOUS CATALYST; C-H BONDS; EFFICIENT SYNTHESIS; SELECTIVE CONVERSION; PROPYLENE CARBONATE; CYCLIC CARBONATES; CO2; HYDROGENATION; FORMIC-ACID; BED REACTOR;

D O I：

10.1002/cssc.201700128

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The direct synthesis of dimethyl carbonate (DMC) from CO2 and CH3OH was achieved at room temperature with 74% CH3OH conversion in the presence of an imidazolium hydrogen carbonate ionic liquid ([C(n)C(m)Im][HCO3]). Experimental and theoretical results reveal that [C(n)C(m)Im][HCO3] can transform quickly into a CO2 adduct, which serves as an effective catalyst and dehydrant. Its dehydration ability is reversible. The energy barrier of the rate-determining step for the DMC synthesis is only 21.7kcalmol(-1). The ionic liquid can be reused easily without a significant loss of its catalytic and dehydrating ability.

引用

页码：2046 / 2052

页数：7

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