采用水热法、共沉淀法和柠檬酸溶胶-凝胶法合成Y-ZrO2载体并负载贵金属Pd,研究了制备方法对Pd/Y-ZrO2催化氧化CH4及C3 H8性能的影响.实验结果表明水热法制备的Y-ZrO2载Pd催化剂具有较高的催化活性及最低的起燃温度.通过BET,XRD,TEM等分析可知,水热法制备的Y-ZrO2热稳定性最好,有利于t相ZrO2的稳定及体相PdO的还原.催化剂中t相ZrO2所占的比率及Pd粒子的尺寸影响催化剂对HC的催化活性.
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