整体式Pt/γ-Al_2O_3/Ce_(0.5-x)Zr_(0.5-x)Mn_(2x)O_2催化剂低温催化燃烧饮食油烟
Chinese Journal of Catalysis(2010)
Abstract
采用固定床反应器评价了整体式催化剂Pt/γ-Al2O3/Ce0.5-xZr0.5-xMn2xO2去除饮食油烟的催化性能.制备了一系列不同Mn含量的Ce0.5-xZr0.5-xMn2xO2储氧材料,并考察了其作为载体对Pt/γ-Al2O3/Ce0.5-xZr0.5-xMn2xO2催化剂活性的影响.应用X射线衍射(XRD)、N2物理吸附和H2程序升温还原(H2-TPR)等手段对催化剂进行了表征.XRD结果表明,贵金属Pt很好地分散在载体γ-Al2O3和Ce0.5-xZr0.5-xMn2xO2上.N2物理吸附和H2-TPR研究结果与催化剂活性测试能很好吻合.催化剂的活性顺序为x=0.10>x=0.15>x=0.05>x=0>x=0.20,Pt/γ-Al2O3/Ce0.4Zr0.4Mn0.2O2催化剂活性最好,油烟完全转化温度仅为495K.
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Key words
cooking fume,catalytic combustion,cerium-zirconium-manganese oxygen storage material,platinum,monolithic catalyst
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