Ag-K/CeO2纳米棒催化剂催化氧化甲醛性能研究

Contemporary Chemical Industry(2020)

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Abstract
采用水热合成法制备了CeO2-r纳米棒,通过共浸渍法负载活性组分Ag和助剂K,得到x%Ag-K/CeO2-r(x=2%、4%、8%)催化剂,并用于催化氧化甲醛反应.催化剂的性能评价结果表明,当Ag的质量分数为4%、K的质量分数为1.3%时,催化剂表现出最优异的催化氧化甲醛性能,在80℃可以将甲醛完全转化成CO2和H2O.H2-TPR和O2-TPD表征发现,4%Ag-K/CeO2-r具优异的低温还原能力和丰富的表面氧物种,对催化剂低温催化氧化甲醛起到重要的作用.
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