摘要
以丙三醇、冰醋酸为原料,活性炭负载对甲苯磺酸为催化剂,催化合成三醋酸甘油酯。考察了催化剂中w(对甲苯磺酸)、催化剂用量、醇酸比、酯化时间等因素对反应的影响。发现上述因素均对三醋酸甘油酯的收率有显著影响,且都存在较优值。催化剂在该反应中有良好的催化活性。优选的反应条件是:催化剂中w(对甲苯磺酸)为36%,w(催化剂)为1.8%,n(丙三醇)∶n(冰醋酸)=1∶4,酯化时间为4 h。在此条件下,三醋酸甘油酯收率可达92%。
Using p-toluensulphonic acid supported by activated carbon as catalyst,glycerol triacetate was synthesized from glacial acetic acid and glycerin. The optimum conditions of the reaction were determined as following： molar ratio of glycerin to glacial acetic acid is 1： 4;the mass of catalyst to total is 1.8%; esterification time is 4 h; w（p-toluensulphonic acid）is 36%. The results show that the yield is over 92%.
出处
《河北工业科技》
CAS
2007年第1期21-23,共3页
Hebei Journal of Industrial Science and Technology
关键词
三醋酸甘油酯
催化合成
活性炭
对甲苯磺酸
glycerol triacetate
catalytic synthesis
activated carbon
p-toluensulphonic acid
