Synthesis of ethanol via a reaction of dimethyl ether with CO2 and H2,Green Chemistry

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Synthesis of ethanol via a reaction of dimethyl ether with CO2 and H2
Green Chemistry ( IF 9.3 ) Pub Date : 2017-10-24 00:00:00 , DOI: 10.1039/c7gc02807e
Qingli Qian _{1,

2,

3,

4,

5} , Meng Cui _{1,

2,

3,

4,

5} , Jingjing Zhang _{1,

2,

3,

4,

5} , Junfeng Xiang _{1,

2,

3,

4,

5} , Jinliang Song _{1,

2,

3,

4,

5} , Guanying Yang _{1,

2,

3,

4,

5} , Buxing Han _{1,

2,

3,

4,

5}

Affiliation

Ethanol is currently produced via the catalytic hydration of ethylene or fermentation of foods. The synthesis of ethanol from cheap and renewable CO₂ is of great importance, but the state of the art routes encounter difficulties, especially in reaction selectivity and activity. Here we show a strategy of ethanol synthesis from CO₂, dimethyl ether (DME) and H₂. The reaction can be effectively promoted with a Ru–Co bimetallic catalyst using LiI as a promoter in 1,3-dimethyl-2-imidazolidinone (DMI) solvent. The predominant product of this reaction was ethanol and the selectivity of ethanol in total products could reach 71.7 C-mol%. The selectivity of ethanol in the liquid product could reach 94.1%, which was higher than the reported routes using CO₂/CO. To the best of our knowledge, this is the first work on ethanol synthesis from DME, CO₂ and H₂. The reaction mechanism is discussed based on a series of control experiments.

中文翻译：

通过二甲醚与CO ₂和H ₂反应合成乙醇

目前，乙醇是通过乙烯的催化水合或食品发酵生产的。由廉价且可再生的CO ₂合成乙醇非常重要，但是现有技术路线遇到困难，特别是在反应选择性和活性方面。在这里，我们展示了由CO ₂，二甲醚（DME）和H ₂合成乙醇的策略。使用LiI作为促进剂的Ru-Co双金属催化剂可以在1,3-二甲基-2-咪唑啉酮（DMI）溶剂中有效地促进反应。该反应的主要产物是乙醇，并且乙醇在总产物中的选择性可以达到71.7C-mol％。液体产品中乙醇的选择性可以达到94.1％，高于使用CO ₂ / CO报道的路线。据我们所知，这是由DME，CO ₂和H ₂合成乙醇的第一项工作。基于一系列的控制实验，讨论了反应机理。

更新日期：2018-01-02

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