吡啶助催化甲醇液相羰化合成甲酸甲酯研究

Study on synthesis of methyl formate by methanol carbonylation using pyridine promoter

在釜式反应器釜中 ,甲醇钠加助催化剂下连续通入一氧化碳 ,与甲醇进行液相羰基化合成甲酸甲酯反应。研究考察了助剂、催化剂浓度、反应温度、压力等影响因素。结果表明 ,强极性非质子型助剂吡啶的添加明显提高甲醇的转化率和甲酸甲酯时空收率 ,在反应温度为 80℃ ,压力 3 8MPa ,主催化剂浓度 0 4mol/L ,助催化剂浓度 1 74mol/L下甲酸甲酯的时空收率可达到 32 0 g·L 1·h 1。

The synthesis reaction of methyl formate (MF) from carbon monoxide and methanol with MeONa catalyst and pyridine promoter in a batch reactor and some influence factors for the reaction(temperature, pressure, concentration of catalyst, promoter) were studied.The experiment results show that adding promoter in the catalytic reaction can accelerate the speed of reaction and increase yield of MF, and the space-time yield (STY) of MF is 320g·L 1 ·h 1 at temperature of 80℃,CO pressure of 4 0MPa,MeONa concentration of 0 4mol/L,promoter (pyridine) concentration of 1 74mol/L, and the conversion of CO and methanol are 95 5% and 39 83%, respectively.