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用原位红外光谱方法考察了不同Cl~-含量的Ru/Al_2O_3上的CO吸附。发现Cl~-对CO在Ru/Al_2O_3上的吸附态(类型、结构、强度)有明显的影响,并且这种影响因预处理条件不同而异。在室温Cl~-的存在导致Ru中心更加缺电子,使吸附态CO红外谱带向高频位移。
The CO adsorption on Ru / Al_2O_3 with different Cl ~ - contents was investigated by in situ FTIR spectroscopy. It was found that Cl ~ - had a significant effect on the adsorption state (type, structure and strength) of CO on Ru / Al 2 O 3, and the effect was different due to the pretreatment conditions. The presence of Cl ~ - at room temperature leads to a more electron-deficient Ru center, which shifts the CO band of the adsorbed CO band to a higher frequency.