101.二段液相酸化を利用した褐炭からの有用化学物質前駆体の生成

抄録

We have recently presented a new method to produce a large amount of small molecule fatty acids through the liquid phase oxidation. The method consists of the first-step oxidation with H_2O_2 below 60℃ in ambient pressure and the second-step oxidation using Fenton reagent at room temperature. Through this method, small molecule fatty acids and benzen carboxylic acids derivatives were successfully recovered by the yields of 40wt% and 20wt%, respectively, from Beulah Zap lignite. However, it is desired to increase the yield of valuable chemicals and to suppress the carbon loss as CO_2. To do so, it is essential to design a selective upgrading method of the product obtained by the first-step oxidation. In this paper, we examined in detail the structure of the first-step oxidation products by utilizing the RICO reaction, then estimated the potential amounts of valuable chemicals recovered from the brown coal.