532nm激光烧蚀金属Ta与CO2反应产物的基质隔离红外光谱研究

自然界中最廉价和最丰富的碳资源CO2的有效利用已成为全球普遍关注的重要课题之一[1].自80年代起,基于回收工业废气中的CO2的可能性以及用CO2取代石油作为精细化学品合成的基本原料的重大意义,有关CO2活化的研究日趋活跃[2].考察过渡金属与CO2的相互作用是研究过渡金属催化活化CO2的基础.加热蒸发从Ti到Cu的过渡金属与CO2作用,一般都能得到相应金属的CO2配合物[3].

Reaction Products of 532 nm Laser Ablation of Ta with Carbon Dioxide Studied by Matrix Isolation Infrared Spectroscopy

nm pulsed laser|ablated Ta atoms react with carbon dioxide to form products TaCO, OTaCO and O-2Ta(CO)-2, which have been isolated in argon matrices and identified by their FTIR spectra and a comparison of the spectra of O-%x%W(CO)-%y%. Annealing of matrix isolated sample results in the growth of OTaCO and O-2Ta(CO)-2, and further 266 nm laser irradiation leads to the increase of OTaCO as well as the formation of O-2TaCO.