Abstract
通过等体积浸渍法制备了金属有机骨架材料MIL-53（AI）（MIL：MaterialsofInstitutLavoisier）负载纳米Pd催化剂．采用X射线衍射（XRD）、透射电子显微镜（TEM）和X射线光电子能谱（XPS）等手段对催化剂的结构进行了表征．催化剂在反应前后XRD衍射峰保持不变，说明载体MIL一53（AI）具有良好的稳定性．采用TEM对催化剂进行表征，结果表明，MIL．53（AI）的多孔晶体结构有助于形成高度分散的纳米Pd颗粒，样品2.7％（w）Pd／MIL．53中Pd颗粒的平均粒径为2．21nm．该催化剂在CO氧化反应中表现出较高的催化活性，115℃达到完全转化．同时催化剂可循环使用，多次反应后催化活性和催化剂结构都保持稳定．
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