One-pot Synthesis of Dimethyl Carbonate in the Presence of a Two-component Catalyst |
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Authors: | CHEN Xiu-zhi HU Chang-wen GAO Zhi-ming |
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Institution: | 1. The Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081, P. R. China;
2. Department of Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China |
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Abstract: | The one-pot synthesis of dimethyl carbonate (DMC) with co-production of propy-lene carbonate(PC) and propylene glycol(PG) from propylene oxide( PO), carbon dioxide and methanol as the starting materials was investigated.The catalyst adopted here was a mixture of tetrabutyl ammonium bromide and sodium methoxide. It was found that under the reaction conditions of t = 150 ℃, p =3-4 MPa and 2 h, the PO conversion could reach 100%, the DMC,PC and the PG selectivities were 49.7%, 42.7% and 49. 8%, respectively, and the selectivity of by-products was below 10%. |
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Keywords: | Dimethyl carbonate Carbon dioxide Propylene oxide Propylene carbonate Catalyst |
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