活性炭负载Ti(SO_4)_2催化合成丙二酸二丁酯的研究

Study on synthesis of dibutyl malonate catalysed by titanium sulfate immobilized on an activated carbon

首次以活性炭负载硫酸钛 (Ti(SO4) 2 /C)作催化剂 ,合成丙二酸二丁酯 ,此催化剂活性高 ,选择性好 ,易分离 ,不腐蚀设备 ,反应时间短 ,是一种环境友好催化剂。考察了影响酯化反应的条件 ,获得优化工艺条件如下 :Ti(SO4) 2 负载量 2 0 % ,丙二酸 0 2mol,正丁醇 0 6mol,催化剂 0 8g ,反应温度 15 0℃ ,反应时间 90min ,丙二酸的转化率 94

Ti(SO 4) 2/C was first applied to esterification of propane diacid with butanol.In the esterfication reaction the catalyst had high activity and excellent selectivity as well as no corrosion to the facilities.The product was separated easily and the reaction time was shorter. Ti(SO 4) 2/C,moreover,was an environmentlly friendly catalyst.The reaction conditions were studied.The optimum condition was obtained as follows:supported titanium sulfate 20%,propane diacid 0.2 mol,butanol 0.6 mol,the catalyst 0.8 g,reaction temperature 150 ℃,reaction time 90 min,the rate of conversion for malonic acid was over 94%.