SO_2－4／TiO_2┐Al_2O_3－SnO_2催化剂的研制及其催化合成己二酸二辛酯

PREPARATION OF SO 2- 4/TiO 2 Al 2O 3 SnO 2 AND ITS CATALYTIC PROPERTIES FOR THE SYNTHESIS OF DIOCTYL ADIPATE

ＳＯ２－４／ＴｉＯ２┐Ａｌ２Ｏ３┐ＳｎＯ２催化剂的研制及其催化合成己二酸二辛酯高根之（曲阜师范大学化学系，曲阜２７３１６５）于世涛杨锦宗＊（大连理工大学精细化工系，大连１１６０１２）关键词固体超强酸，ＳＯ２－４／ＴｉＯ２－Ａｌ２Ｏ３－ＳｎＯ２催化剂，...

The catalyst SO 2- 4/TiO 2 Al 2O 3 SnO 2 was prepared and its catalytic properties for the synthesis of dioctyl adipate (DOA) under different experimental conditions were studied. The results indicate that the catalyst has splendid catalytic activity, selectivity and reusability for the synthesis of DOA. After the catalyst was put into use for 15 times, no reduction in activity and no carbonization were found. The conversion of adipic acid reached as high as 99% at 160￣200℃, and the selectivity for DOA was 98￣100%. The results of SEM, XRD and IR analyses show that the catalyst has crystal structure at the surface and behaves as solid superacid.