考察了Pt、Pd蜂窝催化剂,分别加或不加助化剂铈和钨,经空气高温焙烧后,各催化剂对甲醇氧化的活性、选择性和动力学网络的变化。发现Pt具有比Pd好的低温活性,然而耐温性却较差,在500和700℃焙烧4小时的催化剂上甲醇氧化生成的主要副产物是中间产 The changes of activity, selectivity and kinetic network of methanol oxidation catalyzed by Pt and Pd honeycomb catalysts with or without promoters cerium and tungsten, respectively, calcined at high temperature in air were investigated. Pt was found to have a lower temperature activity than Pd, however, its temperature resistance was poor. The major by-product of methanol oxidation on a catalyst calcined at 500 and 700 ° C for 4 hours was intermediate