制备了负载型Pt/CuCrO催化剂,并进行了CO氧化及其抗H2 O和抗CO2的性能研究.结果表明:载体的晶型结构改变了其可还原性和活性氧物种数量,从而影响催化剂的反应活性及抗H2 O和抗CO2的能力;经400~600℃焙烧的载体为尖晶石型CuCr2 O4氧化物,具有很好的可还原性和较高的活性氧物种数量,因此催化剂具有良好的CO氧化活性和优异的抗H2 O和抗CO2的能力;而800℃焙烧的载体为铜铁矿型CuCrO2氧化物,其CO氧化活性较低,且不具备抗H2 O和抗CO2能力.%A series of Pt/CuCrO catalysts were prepared and investigated for CO oxidation and resistance to H2 O and CO 2 .The results showed that the crystalline structure of the support had significant influence on its reducibility and the amount of active oxygen species , which consequently played important roles in the catalyt-ic performance of the catalysts.The support calcined at 400~600℃ had a spinel structure (CuCr2O4), had good reducibility and high amount of active oxygen species , which resulted in good performance in CO oxida-tion and excellent resistance to H 2 O and CO2 .However, the support calcined at 800 ℃ had a delafossite structure ( CuCrO2 ) , had low reducibility and less amount of active oxygen species , which resulted in inferior performance in CO oxidation and poor resistance to H 2 O and CO2 .
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