高校化学工程学报Issue(1)：164-169,6.DOI:10.3969/j.issn.1003-9015.2014.12.26.08
环氧氯丙烷、甲醇和二氧化碳一步直接催化合成碳酸二甲酯的研究
One-Pot Synthesis of Dimethyl Carbonate from Epichlorohydrin, Methanol and Carbon Dioxide
摘要
Abstract
Dimethyl carbonate was synthesized from glycerol, a by-product in the production of biodiesel, as a raw material in this paper. The novel synthetic process may not only reduce dependence on fossil oil, but also fully utilize biomass resources. Using epichlorohydrin and propylene epoxide as the raw material, the thermodynamic analysis for reactions of dimethyl carbonate synthesis was conducted respectively. It was found that the reaction of using epichlorohydrin as raw material is much more thermodynamically favorable than that of using propylene epoxide, and under 3 MPa and 460 K, the equilibrium yields of dimethyl carbonate are 90.4% and 18.2%, respectively. Based on above results, the influences of various catalysts, including alkali-metal compounds, supported alkali-metal compounds and the mixtures ofn-Bu4NBr and alkali-metal compounds catalyst on the synthesis of dimethy carbonate from epichlorohydrin, methanol and carbon dioxide were studied. The results show that the yield of dimethyl carbonate by sodium compounds is higher than that by potassium compounds. A mixture ofn-Bu4NBr and NaHCO3 was used as a catalyst, critical to improve the yield of dimethyl carbonate (25.2%).关键词
环氧氯丙烷/碳酸二甲酯/直接合成/碱金属催化剂Key words
epichlorohydrin/dimethyl carbonate/direct synthesis/alkali metal catalyst分类
化学化工引用本文复制引用
丁晓墅,董香茉,刘浩,王淑芳,赵新强,王延吉..环氧氯丙烷、甲醇和二氧化碳一步直接催化合成碳酸二甲酯的研究[J].高校化学工程学报,2015,(1):164-169,6.基金项目
国家自然科学基金重点项目(21236001)；高等学校博士学科点专项科研基金(20121317110009)；河北省重大技术创新项目(12275603Z)。 （21236001）
