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应用表面反应红外动态技术考察了促进型铑催化剂Ｒｈ－Ａｇ／ＳｉＯ２上ＣＯ吸附及其加氢反应的性能，结果表明：线式吸附态的ＣＯ对氢的反应性能高于桥式吸附的ＣＯ，是加氢反应的主要活性吸附态．反应条件下温度升高有利于Ｒｈ－Ａｇ／ＳｉＯ２上线／桥ＣＯ吸附态强度比值的增加．表面反应生成了表面甲酰基、甲酸盐、乙酰基、乙酸盐、乙烯酮及烯醇盐等关键的Ｃ１－２含氧中间体．助剂Ａｇ的加入提高了铑催化剂上ＣＯ吸附态的线／桥强度比值以及线式吸附ＣＯ的加氢反应速率和Ｃ２含氧物的生成率．
The reaction of Rh adsorption on Rh-Ag / SiO2 and its hydrogenation was investigated by surface reaction infrared spectroscopy. The results showed that the reactivity of CO in linear adsorption state was higher than that of bridge adsorption CO, Hydrogenation reaction is the main state of active adsorption. The increase of temperature under the reaction conditions is favorable for the increase of the ratio of CO adsorption intensity on Rh-Ag / SiO2 on-line / bridge. Surface reactions generate key C1-2 oxygenated intermediates such as formyl, formate, acetyl, acetate, ketene and enolates. The addition of promoter Ag improves the ratio of line / bridge strength of the CO adsorbed state on the rhodium catalyst as well as the hydrogenation rate of linear adsorbed CO and the C2 oxygenate formation rate.