固体酸SO_4^(2-)/TiO_2-Al_2O_3-SnO_2催化合成氯乙酸四甘醇双酯  

Synthesis of Tetraglycol Bischloroacetate with Solid Super AcidSO_4^(2-)/TiO_2-Al_2O_3-SnO_2 as Catalyst

作　　者：牛梅菊[1] 窦建民[1] 贺媛[1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《精细化工》2004年第10期798-800,共3页Fine Chemicals

基　　金：山东省自然科学基金项目(Y2003D01)~~

摘　　要：以固体酸SO2-4/TiO2 Al2O3 SnO2为催化剂,氯乙酸和四甘醇为原料催化合成了氯乙酸四甘醇双酯。经实验确定的最佳反应条件为:n(氯乙酸).Mn(四甘醇)=2 5,催化剂和带水剂用量分别为反应物总质量的5%和10%,反应时间2 5h,醇的转化率达97 02%,产品收率为81 87%,产品质量分数>97%,催化剂重复使用10次,催化活性基本不变。Tetraglycol bischloroacetate were synthesized from chloroacetic acid and tetraglycol with solid super acid SO^(2-)_4/TiO_2-Al_2O_3-SnO_2 as catalyst.The optimum reaction conditions were found as follows:n(chloroaceticacid)/n(tetraglycol)=2.5,w(benzene)=10%,w(SO^(2-)_4/TiO_2-Al_2O_3-SnO_2)=5% and refluxing time 2.5 h.Conversion of tetraglycol was 97.02%,yield of the diester was 81.87% and the purity was over 97%.Activity of catalyst does not change after repeated use for ten times.

关 键 词：固体超强酸SO4^2-/TiO2-Al2O3-SnO2 氯乙酸四甘醇双酯 酯化反应 

分 类 号：O623.426[理学—有机化学]