不同比表积的Pt负载型催化剂上甲醛催化氧化  

Study on the Catalytic Oxidation of HCHO at Different Surface Area over Supported Pt/CeO_2 Catalysts

作　　者：洪庆红[1] 石艳芝[2] 潘滔[1] 罗孟飞[2] 

机构地区：[1]金华职业技术学院,浙江金华321007 [2]浙江师范大学,浙江金华321004

出　　处：《金华职业技术学院学报》2013年第6期82-85,共4页Journal of Jinhua Polytechnic

基　　金：浙江省教育厅课题(20071061)

摘　　要：为研究铂负载型催化剂对甲醛催化氧化反应的活性,采用溶胶—凝胶法制备了不同载体的铂负载型催化剂,并对催化剂进行XRD、Raman等表征,考察所制催化剂对甲醛催化氧化反应性能。结果表明:载体的性质在反应中起到重要作用,惰性载体无法促进氧的活化,其催化活性较低;对比不同比表面积的Pt/CeO2催化剂,发现比表面积为38 m2/g的催化剂的催化氧化性能最佳,这与催化剂的氧缺位浓度较高及较强的金属-载体间相互作用有关。In order to study the activity of formaldehyde oxidation, Different Surface area over Supported Pt/Ce02 catalysts were prepared by sol-gel methods and tested for HCHO oxidation, compared to Pt/Si02 catalyst. We found that the reactivity of formaldehyde oxidation were influenced by the properties of the supports. We also founded that the specific surface area of Ce02 also influence the catalytic properties of Pt/CeO2 catalyst. A catalyst with 38 m2/g specific surface area has the highest activity, due to the stronger interaction between metal and carrier and the higher concentration of oxygen vacancies .

关 键 词：PT Ce02催化剂 甲醛氧化 氧缺位 

分 类 号：O643.32[理学—物理化学]