11.炭素ガス化における表面化合物のFTIRによる研究

抄録

The surface oxygen complexes produced from carbon gasification with oxygen were characterized by combining DRIFT (Diffuse Reflectance Infrared Fourier Transform) and TPD (Temperature Programmed Desorption) techniques. It is found that cyclic acid anhydride and/or lactone, carbonyl and ether complexes are formed during the gasification and that the decomposition of cyclic acid anhydride and/or lactone is responsible for CO_2 evolution at around 900K in TPD. Some of cyclic acid anhydride/lactone could be hydrated to carboxylic acid at room temperature when the gasified sample is exposed to water vapor. In addition, thermal stability of these carbon oxygen complexes was discussed.