SO_4^(2-)/TiO_2-SnO_2催化剂的制备和表征

Preparation and Characterization of SO_4^(2-)/TiO_2-SnO_2 Catalyzer

以硫酸钛和四氯化锡制备SO_4^(2-)/TiO_2-SnO_2催化剂,对SO_4^(2-)/TiO_2-SnO_2进行了红外、电镜扫描和X衍射等表征.分析表明,在TiO_2-SnO_2中,SnO_2以无定形方式分散在TiO_2表面,负载SO_4^(2-)后,SO_4^(2-)/TiO_2-SnO_2催化剂的颗粒更加细化,比表面积进一步增大,形成更多的酸中心,酸性增强,催化活性较佳.

The SO4^2-/TiO2-SnO2 was prepared by Ti（SO4）2·9 H2 Oand SnCl4 and then it was characterized by FT-IR、SEM and XRD. The analysis showed that SnO2 dispersed on the surface of TiO2,after loading SO4^2-,SO4^2-/TiO2-SnO2 catalyst particles became more refined,the specific surface area grew larger,more acid center were formed,acidic increased and the catalytic performance of SO4^2-/TiO2-SnO2 catalyst is good.