An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.
描述了一种从烯丙基氧化物、
二氧化碳和脂肪族一元醇生产二烷基
碳酸酯和二醇的集成工艺,其中首先在无卤素碳化催化剂的存在下将烯丙基氧化物与
二氧化碳反应,以提供相应的环状
碳酸酯,然后在碳化催化剂和/或酯交换催化剂的存在下将环状
碳酸酯与脂肪族一元醇反应,并回收碳化催化剂以提供相应的二烷基
碳酸酯和二醇,其中二烷基
碳酸酯产品的卤素浓度约为5 ppm或更低。