CO在超细SnO_2和Pd/SnO_2上的催化氧化

Catalytic CO oxidation over ultrafine SnO 2 and Pd/SnO 2 catalysts

采用溶胶凝胶——超临界流体干燥法制备ＳｎＯ２粉体和负载Ｐｄ催化剂。考察了ＣＯ催化氧化活性、稳定性及焙烧还原条件的影响。结果表明：超细ＳｎＯ２及负载Ｐｄ催化剂的催化氧化活性明显优于一般ＳｎＯ２，它们的最佳焙烧温度和适宜的还原温度分别为６００℃和５０℃。

Ultrafine SnO 2 and the SnO 2 supported Pd catalyst (Pd/SnO 2) are prepared by sol gel supercritical fluid drying method. An investigation is carried out on the activity and stability of the catalyst and the effect of calcination reduction conditions. The results show that the ultrafine SnO 2 supported Pd catalyst has a higher activity for catalytic oxidation than common SnO 2.The optimal calcination and reduction temperatures are 600℃ and 50℃, respectively.