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发明公开
CN108129313A 合成碳酸对称酯并联产1,2-丙二醇的方法 无效 - 驳回

合成碳酸对称酯并联产1,2-丙二醇的方法
摘要：
合成碳酸对称酯并联产1,2-丙二醇的方法，涉及一种合成碳酸对称酯方法，本发明具有复合孔结构的高效碱性催化剂，用于碳酸丙烯酯和各种醇类（ROH，R可为直链醇、异构醇、芳香醇、酚类、二醇如乙二醇、二甘醇及多醇等各种醇类）一步合成碳酸对称酯。反应得到的粗产品中仅含有碳酸对称酯和1,2-丙二醇。其中，碳酸丙烯酯转化率最高可达到95%。副产物1,2-丙二醇作为大宗化原料经过简单的蒸馏即可分离。整个反应过程清洁、高效、无污染，无任何废弃物产生。当碳酸丙烯酯：各种醇类摩尔比1:3，反应压力5 MPa，反应温度100℃，空速5 h-1，催化剂使用5000h不失活，稳定性较好。
摘要（英）：

The invention discloses a method for synthesis of symmetrical carbonate and co-production of 1,2-propylene glycol, and relates to the method for synthesizing the symmetrical carbonate. According to the method provided by the invention, a high-efficiency basic catalyst with a composite pore structure is used for one-step synthesis of the symmetrical carbonate by using propylene carbonate and various alcohols (ROH, wherein the R can be selected from various alcohols such as straight-chain alcohols, iso-alcohols, aromatic alcohols, phenols, diols such as ethylene glycol and diethylene glycol, polyols, and the like). The obtained crude product obtained by a reaction only contains the symmetrical carbonate and the 1,2-propylene glycol, wherein the conversion rate of the propylene carbonate canbe up to 95%. The by-product 1,2-propylene glycol can be separated out through simple distillation as a bulk raw material. The whole reaction process is clean, efficient and free of pollution, and nowaste is generated. When the molar ratio of the propylene carbonate to the various alcohols is 1:3, the reaction pressure is 5 MPa, the reaction temperature is 100 DEG C, and the space velocity is 5 h<-1>, the catalyst is not deactivated and has good stability after being used for 5000 hours.

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