Year: 2025
Type: article
Abstract: 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, 13C-NMR, 1H-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 (δC), and polycyclic aromatic hydrocarbon content (HA2 + HA3) were calculated and correlated with liquefaction performance. The results showed a strong linear relationship between HA2 + HA3 and oil yield (R2 = 0.90), and the aromatic content (AR) was also positively related to oil yield. This study suggests that AR content and HA2 + HA3 are effective indicators for evaluating the solvent performance of heavy oils in COCL.
DOI: 10.3390/ijms26136048
Authors: Guanghua Yang, Juan Ma, Caitao Chen, Tingting Cui, Yingluo He, Ting Liu
Institutions: Xinjiang University, University of Toyama
Language: English
Subfield: Analytical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,499
OpenAlex ID: W4411609347