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应用加温加压气固多相催化原位红外光谱反应器，在Ｈ＿２／ＣＯ＝２：１（ｍｏ１）、０．５～５．０ＭＰａ和２０～３００℃的接近ＣＯ＋Ｈ＿２工业反应条件下，考察了还原态和氧化态Ｒｈ／Ａｌ＿２Ｏ＿３催化剂表面ＣＯ吸附态，关联了吸附态与催化剂活性的关系。实验结果表明，还原态的Ｒｈ／Ａｌ＿２Ｏ＿３催化剂一氧化碳加氢生成烃类，其催化剂表面存在三种ＣＯ吸附态：线式Ｒｈ（ＣＯ）．孪生式Ｒｈ（ＣＯ）＿２和桥式Ｒｈ＿２ＣＯ。在常温常压下，以孪生式吸附态为主；在一氧化碳加氢反应条件下，主要存在线式ＣＯ吸附态。氧化态的Ｒｈ／Ａｌ＿２Ｏ＿３，催化剂，在ＣＯ＋Ｈ＿２的反应条件下，一氧化碳不转化为烃类而生成二氧化碳，其催化剂表面，无论在常温常压或加温加压的反应条件下，均以ＣＯ孪生式吸附态为主要存在形式。
Under the condition of H 2 / CO = 2: 1 (mo1), 0.5 ~ 5.0MPa and 20 ~ 300 ℃ near CO + H_2 industrial reaction conditions, the gas-solid heterogeneous catalytic in situ FTIR reactor was heated and pressurized. The adsorption states of CO on the surface of Rh / Al_2O_3 catalyst in the reduced and oxidized state were correlated with the relationship between the adsorption state and the catalyst activity. The experimental results show that the Rh-Al_2O_3 catalyst is reduced to hydrogenate to form hydrocarbons, and there are three CO adsorption states on the surface of the catalyst: linear Rh (CO). Twin Rh (CO) _2 and Rh_2CO. Under normal temperature and pressure, the twin-type adsorbed state is dominant; under the condition of carbon monoxide hydrogenation reaction, there is mainly linear CO-adsorbed state. Under the reaction conditions of CO + H 2, carbon monoxide is not converted into hydrocarbons and carbon dioxide is generated. The catalyst surface of the catalyst is oxidized by Rh-Al 2 O 3 under the reaction conditions of CO twin type Adsorption as the main form of existence.