制备了固载型杂多酸盐催化剂HPAS/TiO2 -Al2 O3,用IR、XRD、TG -DTA等对催化剂进行了表征。在DOP的合成反应中考查了催化剂的催化作用。实验表明 ,HPAS/TiO2 -Al2 O3 稳定性好 ,再生性能优良 ,是一种低温高效型催化剂 The supported heteropoly acid salt catalyst HPAS / TiO2-Al2 O3 was prepared. The catalysts were characterized by IR, XRD and TG-DTA. The catalytic effect of the catalyst was examined in the synthesis of DOP. Experiments show that, HPAS / TiO2 -Al2 O3 good stability, excellent regeneration performance, is a low temperature and high efficiency catalyst