【摘要】 利用CO低温吸附的红外光谱对硫化态K-MO/γ-Al₂O₃催化剂进行了研究.对观察到的红外吸收带（2342,2151和2125cm^-1）作了归属,观测到CO在表面吸附随时间变化的规律,以及不同压强下的吸附行为变化.结果表明CO在催化剂上分子形式的吸附是一快过程;在较高压力时（≥2.OkPa）CO可以发生歧化反应生成CO₂;H₂和CO共吸附时,CO₂的吸附强度提高;助剂K的加入,促进了CO解离生成CO₂.更多还原

【Abstract】 The low temperature infrared spectroscopy was applied to investigate the adsorption of CO and CO+H2 on sulfided K-Mo/7-Al2O3 catalyst. Three infrared absorption bands (at 2342,2151 and 2125cm-1) were observed and assigned. The adsorption behaviour of CO with time and pressure were studied. It shows that CO molecules adsorb quickly and disproportionate partially to produce CO2. In the case of CO and H2 co-adsorption,CO2adsorption strength increased. Potassium promoter interacts with molybdenum components and incurs CO disproportionate.更多还原