Pt/C催化剂的小角X射线散射研究  

Characterization of Pt/C Catalyst by Small Angle X-ray Scattering(In Chinese)

作　　者：夏庆中[1] 樊志剑[1] 陈波[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《中国核科技报告》2007年第2期42-50,共9页China Nuclear Science and Technology Report

摘　　要：Pt/C催化剂在轻水同位素置换反应中有重要的应用。应用小角X射线散射(SAXS)技术,对乙二醇合成法、浸渍还原法和微波加热法,三种不同方法制备的Pt纳米颗粒的微结构进行了研究。得到了Pt/C催化剂中Pt粒子颗粒的特征尺度、形状、数量、团聚效应和尺寸分布等相关结构信息。对Pt/C催化剂进行了X射线衍射(XRD)和透射电镜(TEM)测试,观测结果同SAXS的结果自洽。研究表明三种方法制备的Pt/C催化剂的颗粒尺寸、Pt团聚体尺寸和表面积有较大差别。Pt/C catalyst plays an important role in hydrogen-water isotopic exchange reaction.Small Angle X-ray scattering(SAXS)is applied to investigate the structure of three kinds of Pt nanoparticles which were produced by three processes,Glycol synthesis,Soakage-reducing and Microwave heating.The SAXS analysis of size,shape,surface and the aggregates of primary Pt parti- cles is reported here.Additionally,Transmission Electron Microscope(TEM) measurements also carried out,the results of TEM are in agreement with SAXS conclusions.It is shown that three processes produced different sizes and surface area of Pt aggregations.

关 键 词：PT/C催化剂 小角X射线散射 团聚效应 

分 类 号：O434.1[机械工程—光学工程] O561[理学—光学]