文献类型：期刊文献

英文题名：Liquefaction of Hongliulin coal asphaltenes and conversion of oxygenic structure

作者：Sun, Shuo[1];Zhang, Yuanlin[1];Gu, Jiale[1];Wu, Shiyong[1];Bai, Yonghui[2];Huang, Sheng[1];Wu, Youqing[1]

机构：[1]East China Univ Sci & Technol, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China;[2]Ningxia Univ, State Key Lab High efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

年份：2024

卷号：358

外文期刊名：FUEL

收录：;EI(收录号：20234214909586);WOS:【SCI-EXPANDED(收录号:WOS:001101494500001)】；

基金：This work was supported by National Key R & D Program of China (2022YFB4101300) , the National Natural Science Foundation of China (Grant Nos. 21978091) , the Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2022-K02) .

语种：英文

外文关键词：Direct coal liquefaction; Asphaltenes; Nickel;cobalt-molybdenum catalyst; Oxygenic structure

摘要：Based on the multistage liquefaction process, asphaltene was prepared from Hongliulin coal and deeply liquefied with Ni-Co-Mo, Co-Mo, and Fe2O3 catalysts. The yields of each component were obtained. Ultimate analysis, FT-IR and XPS was used to investigate the conversion of oxygenic structure. The results showed that the ability to catalyze asphaltene conversion was ranked as Ni-Co-Mo > Co-Mo > Fe2O3 in the range of 440-480 degrees C. The highest oil yield was 44.31% at 470 degrees C with Ni-Co-Mo catalyst. Ni-Co-Mo catalyst could effectively increase the H/C ratio and reduce the oxygen content of asphaltene, which had a strong correlation with the trend of oil yield. The main forms organic oxygen in remaining asphaltene after liquefaction were C = O, C-O and COO and the contents decreased sequentially. Ni-Co-Mo could catalyze the cleavage of C = O significantly to form a large amount of C-O and improve the oil yield after 460 degrees C. The C-O content was about 34% in remaining asphaltene, which was mainly a relatively stable aromatic ether structure and was not susceptible to hydrocracking reactions.