1-01　固体ＮＭＲによる二種類の低温酸化炭の化学構造解析

抄録

To characterize the chemical structure of oxidized coal, solid state ¹³C NMR spectra were acquired for two kinds of coal X and Y before and after estimation of their self-heating property by using R70 apparatus. It was found that coal X with higher oxgen concentration reached 80ºC in shorter time than coal Y. Futhermore, the amounts of aldehyde or ketone estimated to be 0.77mmol/coal-g in coal Y during oxidization, while that of calbonyl was estimated to be 0.61mmol/g-coal in coal X. It is suggested that generation of aldehyde or ketone, and carbony might occure at less than 80ºC. In addition, it is indicated that the kinds of oxidized reactions were diffrent between coal X and Y.