41.石炭中に存在するカルボキシル基の熱分解挙動

抄録

Recently, we developed a reliable quantitative analytical method for oxygen containing functionalities in coal such as phenolic -OH and carboxylic -OH. By using this new method the thermal stability of carboxylic acid functionality in coal has been examined comparing to those of model compounds, and it was found that there were interesting differences in the thermal decomposition behavior between low rank coals and high rank coals, that is, the former contained significant amount of relatively unstable form of carboxylic acid functionalities which could be decomposed under 350℃, meanwhile the later seemed to have stable form of functionality like aromatic carboxylic acid.