采用多元醇为模板剂合成了介孔Ce1-xZrxO2(x=0 2, 0 35, 0 5)固溶体材料,并以其为载体负载CuO制备了Cu基催化剂.应用透射电子显微镜、X射线衍射、程序升温还原、程序升温脱附和N2吸附-脱附等技术对载体及催化剂进行了表征,并研究了Zr的取代比例x值对载体和Cu基催化剂性能的影响.结果表明,所有Ce1-xZrxO2样品均为介孔材料,其中Ce0 5-Zr0 5O2载体样品有较大的比表面积(181 m2/g), CuO/Ce0 5Zr0 5O2催化剂样品在富氢条件下有较高的催化CO选择性氧化反应的活性和选择性.与其他催化剂样品相比, CuO/Ce0 5Zr0 5O2催化剂样品中形成的活性中心更多,分散性更好,对CO的吸附量更大, CO脱附温度更低,活性组分与载体的相互作用更强.
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