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