Production of Diethyl Carbonate from Ethanol and Carbon Monoxide over a Heterogeneous Catalyst
Production of Diethyl Carbonate from Ethanol and Carbon Monoxide over a Heterogeneous Catalyst
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DOI：
10.1021/ef0101816
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发表时间：
2002
期刊：
影响因子：
5.3
通讯作者：
B. C. Dunn;Catherine Guenneau;S. Hilton;J. Pahnke;E. Eyring;J. Dworzanski;H. Meuzelaar;Jianglin Hu;M. Solum;R. Pugmire
中科院分区：
文献类型：
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作者：
B. C. Dunn;Catherine Guenneau;S. Hilton;J. Pahnke;E. Eyring;J. Dworzanski;H. Meuzelaar;Jianglin Hu;M. Solum;R. Pugmire
以活性炭负载CuCl 2/PdCl 2为催化剂，乙醇气相氧化羰基化合成碳酸二乙酯（DEC）。使用该催化剂的DEC的产率为约10重量%，副产物二乙氧基甲烷、甲酸乙酯和乙醛也以显著较低的产率形成。在制备后立即用氢氧化钾处理催化剂可使DEC的产量提高近2倍，而不增加形成的副产物的量。形成DEC和副产物的反应以平行而不是顺序的方式发生，这表明应该可以鉴定对DEC更具选择性的催化剂。
Diethyl carbonate (DEC) has been produced by the oxidative carbonylation of ethanol in the gas phase over a heterogeneous CuCl2/PdCl2 catalyst supported on activated carbon. Yields of DEC with this catalyst are approximately 10 wt % with the byproducts diethoxymethane, ethyl formate, and acetaldehyde also formed in significantly lower yields. Treatment of the catalyst immediately after preparation with potassium hydroxide enhances the production of DEC almost 2-fold without increasing the amount of byproducts formed. The reactions that form DEC and the byproducts occur in a parallel, rather than a sequential, manner indicating that it should be possible to identify a catalyst which is more selective for DEC.