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利用双束红外光谱技术研究了CO在Pt/Al_2O_3上的吸附。指出温度超过150℃,CO发生分解(岐化)形成CO_2和C。碳沉积在铂上,CO_2在Al_2O_3上形成各种结构的羧化物和碳酸盐。讨论了生成机理。共吸附水引起吸附态CO红外吸收带“红移”远大于从前文献中报导的结果。它可能是由于吸附在铂上的CO和吸附在Al_2O_3上的水之间的氢键作用引起的。
The adsorption of CO on Pt / Al_2O_3 was studied by using double beam infrared spectroscopy. Pointed out that the temperature exceeds 150 ℃, CO decomposition (disproportionation) to form CO_2 and C. Carbon is deposited on platinum and CO 2 forms carboxylates and carbonates of various structures on Al 2 O 3. Discussed the generation mechanism. Co-adsorbed water caused the “red-shift” of the IR band of adsorbed CO much greater than previously reported in the literature. It may be due to the hydrogen bond between CO adsorbed on platinum and water adsorbed on Al 2 O 3.