载体TiO_2对Co-P非晶态合金性质的影响  

Effect of Support TiO_2 on the Characteristics of Co-P Amorphous Alloy

作　　者：韩长秀[1] 林徐明[1] 张宝贵[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《化学学报》2007年第9期793-797,共5页Acta Chimica Sinica

基　　金：天津市自然科学基金(No.043801311)资助项目.

摘　　要：用还原沉积法分别合成了纯态Co-P非晶态合金和一种新型负载非晶态合金催化剂CoP/TiO2,用XRD,ICP,TEM,BET和DSC等手段对催化剂的物理性质进行了表征,比较了它们的结构、组成、形貌、表面积及热稳定性等物理性质及其对PH3分解的催化活性.与纯态Co-P非晶态合金比较,CoP/TiO2具有更大的表面积和较高的热稳定性及催化活性,这缘于TiO2载体与催化剂的相互作用以及载体对Co-P良好的分散性能.Co-P amorphous alloy and a new supported Co-P amorphous alloy catalyst CoP/TiO2 were prepared respectively by reduction-chemical deposition method. The physical properties of the alloy catalysts were characterized by XRD, ICP, TEM, BET and DSC. The structure, composition, shape, surface area and thermal stabilities of Co-P and CoP/TiO2 were compared.. Besides, their catalytic activities for PH3 decomposition were compared, too. Compared with Co-P particles, CoP/TiO2 has bigger surface area, higher thermal stability and catalytic activity, which was attributed to interaction of TiO2 support and catalyst and high dispersion of Co-P alloy particles on the support of TiO2.

关 键 词：非晶态合金 钴磷合金 TIO2 负载型催化剂 

分 类 号：TG139.8[一般工业技术—材料科学与工程]