固载杂多酸催化剂PW_（12）／SiO_2复相催化酯化合成邻苯二甲酸二异辛酯

CATALYTIC SYNTHESIS OF DOP BY HETEROGENEOUS SUPPORTED HETEROPOLY ACID CATALYST PW_(12)/SiO_2

用自备的固载杂多酸催化剂ＰＷ１２／ＳｉＯ_２复相催化酯化合成邻苯二甲酸二异辛酯（ＤＯＰ），发现该固载杂多酸催化剂对酯化合成ＤＯＰ具有催化活性高、生产工艺简单、催化剂容易回收并可多次重复使用等优点，讨论了原料配比、酯化时间、催化剂用量及其重复使用次数对酯化率的影响。

Heterogeneous supported heteropoly acid catalyst PW12/SiO2 was prepared and used in heterogeneous catalitic synthesizing di(2-ethyl-hexyl) phthalate(DOP), This catalyst showed many advantages compared with sulphuric acid catalyst, for example, could decrease the corrosion of equipments and the pollution in the environment,obtain higher ester ratio and choice,make simplicity in treating the products and the catalyst may be used repeatedly.