用脉冲反应考察了富氢条件下Au/γ-Al2O3催化剂上CO的选择氧化反应. 结果表明,CO和O2在Au/γ-Al2O3催化剂表面同时发生吸附,其吸附活性中心都在催化剂的活性组分表面,CO的吸附强度大于O2的吸附强度,吸附态的CO和吸附态的O2之间反应生成CO2. 提高反应温度和增加原料中氧的含量都能提高CO的转化率. 在所考察的实验条件下,O2的反应选择性基本上为100%.
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