摘要
利用石油醚、氯仿对褐煤进行分级萃取，将萃余煤进行碱性弱氧化。GC／MS对褐煤和氧化产物的萃取液进行成份分析，并采用面积归一化法确定各成份的相对含量。实验表明：原煤石油醚萃取液中鉴定了46种组分，主要以烃类（80．2％）和酯类（14．3％）为主；萃余氧化煤的石油醚萃取液中鉴定了44种为氧化产物，与原煤组分相比，其中烃类（43．3％）相对含量减少，酯类（18．9％），醇类（15％），芳香烃（6．5％），酚类（6．1％），烯烃（4．6％），酸类（2．2％）相对含量增加。这表明在该氧化条件下可以使分子结构发生变化从而得到其它有机化学品。
Brown coal was extracted by petroleum ether and chloroform by stages, the residues after extraction were oxidized with NaOH and H2O2, the extraction of products of oxidation were same to coal, GC/MS was used to ana- lyze the components. The results show that 46 compounds are identified from petroleum ether extraction of coal. The main constituents are hydrocarbon （80.2%） and esters （ 14.3% ）. Comparing to coal, 44 compounds were i- dentified from petroleum ether extraction of oxidation coal. The relatively content of alkyls （43.3 % ） decreased, but esters （18.9%）, alcohols （ 15% ）, aroma hydrocarbons （6.5%）, hydroxybenzene （6. l% ）, alkene （4. 6% ）, acids （2.2%） increased. It indicted that other available chemicals can be obtained from coal oxidation.
出处
《洁净煤技术》
CAS
2009年第3期43-45,52,共4页
Clean Coal Technology
