摘要
利用模板剂-浸渍法制备出了不同焙烧温度下的多孔复合材料TiO_2-Al_2O_3和Pd/Al_2O_3-TiO_2催化剂来催化氧化乙醇.样品经过XRD,FT-IR,孔结构分析、TEM、XPS、脉冲吸附、NH_3-TPD等进行表征分析.250℃焙烧的Pd/TiO_2-Al_2O_3催化剂具有最高的乙醇转化率和CO_2生成率.高比表面积、均匀分散的金属Pd颗粒和丰富的表面吸附氧是其具有高的催化活性的主要原因.
Porous composite materials Al2O3-TiO2 calcined at different temperatures supported palladium catalysts were synthesized by template-impregnation technique and used for catalytic oxidation of ethanol. The as-prepared samples were characterized by means of low angle and wide angle X-ray diffraction（ XRD）,N2adsorption-desorption isotherms,Transmission electron microscopy（ TEM）,Fourier transformed infrared（ FT-IR） and XPS. Pd/TiO2-Al2O3 calcined at 250 ℃ was much more active on the conversion of ethanol and CO2 yield than any other ones. High surface area,well-dispersed metal palladium nanoparticles and rich chemisorbed oxygen are probably responsible for the high catalytic activities.
作者
朱靖
王彦平
李哲
ZHU Jing WANG Yan-ping LI Zhe(College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China)
出处
《分子催化》
EI
CAS
CSCD
北大核心
2017年第1期1-10,共10页
Journal of Molecular Catalysis(China)
基金
Project supported by the State Key Program of National Natural Science of China(Grant No.21336006)
Shanxi Province Scientific and Technological Project(20140313002-2)~~
