固相化学法制备纳米Ce_(0.75)Zr_(0.25)O_2粉体的表征及应用(英文)  

Characterization and Application of Nanometer Ce_(0.75)Zr_(0.25)O_2 Powder Synthesized by Solid State Chemical Reaction Method

作　　者：郑育英[1] 廖世军[1] 黄慧民[2] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510641 [2]广东工业大学轻工化工学院,广东广州510006

出　　处：《材料科学与工程学报》2011年第1期1-6,20,共7页Journal of Materials Science and Engineering

基　　金：the financial sponsor from National Natural Science Foundation of China(NSFC)under Granted No.60977029 and 10774031

摘　　要：以Ce2(CO)3,ZrOCl2.8 H2O和H2C2O4.2 H2O为原料,第一次成功地采用了机械力活化固相化学法制备纳米Ce0.75Zr0.25O2粉体。以XRD、TEM分析及XPS等测试手段对Ce0.75Zr0.25O2粉体的结构和形貌进行了表征,结果表明,产物为单一立方相的球形粉体,平均粒径小于20nm,比表面积为85.4m2/g。通过TG-DTA分析,对合成过程中可能发生的化学反应机理进行了分析。对Ce0.75Zr0.25O2氧化物固溶体在三效催化剂中的活性进行了评价。Nanostructured Ce_0.75Zr_0.25O_2 powder was successfully synthesized via mechanically activated solid state chemical reaction method for the first time,using Ce_2（CO）_3,ZrOCl_2·8H_2O and H_2C_2O_4·2H_2O as raw materials.Their structure and morphology were characterized by X-ray powder diffractometry,transmission electron microscopy,X-ray photoelectron spectrometmetry and BET surface area testing technique.The results show that the powder is a single-cubic-phase, spherical shape,the average particle size is smaller than 20nm,and the specific surface area of 85.4m^2/g.The possibly chemical reactions during the synthesis process were determined through TG-DTA investigation.The activity of Ce_0.75Zr_0.25O_2 oxide solution in three-way catalysts was valued in this work.

关 键 词：氧化铈 氧化锆 固相化学法 纳米 

分 类 号：TB383[一般工业技术—材料科学与工程]