电子束辐照与电化学还原联用技术——一种用于煤炭直接液化的新方法(英文)

Combination of electron beam irradiation and electro-reduction—A novel method for direct coal liquefaction

对电子束辐照与电化学联用技术提高煤炭液化率的新型方法进行了研究。利用高能电子束对煤炭样品进行辐照,并通过四氢呋喃萃取出辐照后的可能产物并计算其提取率。实验结果发现,提取产率随着辐照剂量的增加而增加,并得到在氧气气氛下25 kGy的最佳辐照条件。辐照的样品进一步在氢氧化钠电解液中电化学还原液化,并采用元素分析法、傅里叶红外光谱法、阴极极化曲线法、核磁共振法和计时电流法等来检测辐照对煤炭电化学还原的影响。

A novel method was developed to combine electron beam irradiation with electrochemical reduction to increase coal liquefaction degree. Coal samples were irradiated by a stream of high energy electron beam. The samples were treated with tetrahydrofuran to extract the possible products from electron beam irradiation. The products were analyzed to calculate the yield. It was observed that the extract yield increased as the absorbed doses increased,but the increase was more significant when the absorbed dose was 25 kGy in O2atmosphere. The irradiated samples were further electrochemically reduced in sodium hydroxide electrolyte solution for liquefaction. Corresponding elemental analyses,Fourier Transform Infrared Spectroscopy,linear sweep voltammetry,nuclear magnetic resonance and chronoamperometry were employed to investigate the effects of the electron beam irradiation on the electrochemical reduction of coal.