用于甲苯催化燃烧的Pd/Ce0.8Zr0.2O2/基底整体催化剂

催化学报 , 2008, 29(4): 373-378.

用于甲苯催化燃烧的Pd/Ce0.8Zr0.2O2/基底整体催化剂

张庆豹 ^1, , 赵雷洪 ^2, , 滕波涛 ^3, , 谢云龙 ^4, , 岳雷 ^5,

1.浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华,321004

2.浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华,321004

3.浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华,321004

4.浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华,321004

5.浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华,321004

基金项目: 浙江省自然科学基金 (203147)

关键词：整体催化剂 , 甲苯 , 催化燃烧 , 涂层 , 钯 , 氧化铈 , 氧化锆

Pd/Ce0.8Zr0.2O2/Substrate Monolithic Catalyst for Toluene Catalytic Combustion

采用浸渍法制备了Pd/Ce0.8Zr0.2O2/基底整体催化剂,应用热重-差示扫描量热、扫描电镜、X射线衍射、氮吸附、拉曼光谱和程序升温还原等技术手段对催化剂进行了表征,考察了不同温度焙烧的整体催化剂的甲苯催化燃烧性能.结果表明,一层均匀紧密的Ce0.8Zr0.2O2涂层很好地分散在基底表面上,该涂层具有良好的抗振荡性和较高的粘结强度.400 ℃焙烧的Pd/Ce0.8Zr0.2O2/基底整体催化剂的催化活性最高,甲苯转化率达97%以上的最低反应温度为210 ℃.此外,Pd/Ce0.8Zr0.2O2/基底整体催化剂具有良好的热稳定性,这可能是因为CeO2-ZrO2固溶体的形成和高温下PdO的稳定存在.

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