ZrO_2-Dy_2O_3/SO_4^(2-)-沸石分子筛催化合成柠檬酸三丁酯的研究  

Study on synthesis of tri n butyl citricate with ZDSH as catalyst

作　　者：林绮纯[1] 郭锡坤 林维明[2] 

机构地区：[1]汕头大学科学研究院,汕头515063 [2]华南理工大学化工系,广州510641

出　　处：《天然气化工—C1化学与化工》1999年第6期54-56,57,共4页Natural Gas Chemical Industry

摘　　要：用固体超强酸催化剂（ＺｒＯ２Ｄｙ２Ｏ３／ＳＯ４２ －沸石分子筛） 催化合成柠檬酸三丁酯（ＴＢＣ） 。对催化剂的制备条件和ＴＢＣ 的合成条件进行了研究。在最佳反应条件下，酯化率可达９７ ％ 以上。借助ＢＥＴ 对催化剂进行表征，结果表明，该催化剂具有比表面积大、易过滤、产品中无催化剂残留、成本低、使用寿命长等优点，是合成ＴＢＣ 的理想催化剂。Tri n butyl citricate(TBC)was synthesized with zeolite supported ZrO 2 Dy 2O 3/SO 4 2 solid super acids(ZDSH) as catalysts.The preparation conditions of the complex catalysts and esterification conditions were studied.Under the optimum synthesis conditions,the esterification ratios were over 97%.The specific surface area of catalyst is measured by BET method.The result shows that the catalyst has big specific surface area and good stability,and the complex catalysts and TBC are easily separable without any catalyst residual left in TBC.

关 键 词：固体超强酸 催化剂 柠檬酸三丁酯 酯化反应 

分 类 号：TQ225.242[化学工程—有机化工]