Solvent Performance Evaluation of Heavy Oil in Coal–Oil Co-Liquefaction
In this study, we investigated the solvent performance of six heavy oils from Xinjiang, China, for coal-oil co-liquefaction (COCL). Autoclave experiments revealed that shale oil vacuum residue (SOVR) provided the best liquefaction performance. The oils were characterized using FT-IR, <sup>13</sup>C-NMR, <sup>1</sup>H-NMR, and column chromatography, which revealed that they were mainly composed of aliphatic compounds, with minor aromatic and substituted aromatic compounds. The pyrolytic degradation quality indices (PDQIs), solubility parameter (δ<sub>C</sub>), and polycyclic aromatic hydrocarbon content (H<sub>A2</sub> + H<sub>A3</sub>) were calculated and correlated with liquefaction performance. The results showed a strong linear relationship between H<sub>A2</sub> + H<sub>A3</sub> and oil yield (R<sup>2</sup> = 0.90), and the aromatic content (AR) was also positively related to oil yield. This study suggests that AR content and H<sub>A2</sub> + H<sub>A3</sub> are effective indicators for evaluating the solvent performance of heavy oils in COCL.
Authors
- Yingluo He (ORCID: https://orcid.org/0000-0001-8799-1991)
- C. Y. Chen (ORCID: https://orcid.org/0000-0002-0323-6196)
- Ting Liu
- Tingting Cui (ORCID: https://orcid.org/0000-0003-0532-5050)
- Guanghua Yang (ORCID: https://orcid.org/0000-0002-1598-3033)
- Juan Ma (ORCID: https://orcid.org/0000-0003-4720-3377)
Institutions
- University of Toyama (JP)
- Xinjiang University (CN)
Publication Details
- Journal
- International Journal of Molecular Sciences
- Published
- 2025-06-24
- DOI
- https://doi.org/10.3390/ijms26136048
- Citations
- 1
- Primary Topic
- Petroleum Processing and Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.75
Funders
- Natural Science Foundation of Xinjiang Province
- Natural Science Foundation of Xinjiang
- National Key Research and Development Program of China