CAJ | 학술논문

研究了以无水碳酸钾、自制的钛酸酯等化合物为催化剂,对苯二甲酸二甲酯和环己醇为原料,进行酯交换反应制取对苯二甲酸二环己酯,考察了催化剂用量、反应温度、反应时间、反应物摩尔配比等因素的影响.适宜的操作条件为:环己醇与对苯二甲酸二甲酯的摩尔配比为3:1、反应温度160～190℃、反应时间7 h、催化剂用茸为1.0%.此时,对苯二甲酸二甲酯转化率达93%以上,对苯二甲酸二环己酯的收率达92%以上.
연구료이무수탄산갑、자제적태산지등화합물위최화제,대분이갑산이갑지화배기순위원료,진행지교환반응제취대분이갑산이배기지,고찰료최화제용량、반응온도、반응시간、반응물마이배비등인소적영향.괄의적조작조건위:배기순여대분이갑산이갑지적마이배비위3:1、반응온도160～190℃、반응시간7 h、최화제용용위1.0%.차시,대분이갑산이갑지전화솔체93%이상,대분이갑산이배기지적수솔체92%이상.
A transesterification process for synthesis of dieyelohexyl terephthalate from dimethyl terephthalate and cyelohexanol is studied with potassium carbonate,titanate and other catalysts.The influences of the amount of catalyst,reaction temperature,reaction time and ratio of reactants are investigated.The optimal conditions are obtained as follows:3:1 of the molar ratio of cyelohexanol/(dimethyl terephthalate,160-190℃ of the reaction temperature,7 hours of the reaction time and the selftitanate catalyst amount of 1.0%.Under above conditions the conversion rate of dimethyl terephthalate can be over 93%with dicyelohexyl terephthalate yield higher than 92%.