@article{ART003274560},
author={Shiquan He and Louwei Cui and Jiaojiao Liu and Sijie Wang and Yanyan Song and Ting He and Tao Liu and Huaan Zheng and Yonghong Zhu and Dong Li},
title={Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={3069-3087},
doi={10.1007/s42823-025-00978-4}
TY - JOUR
AU - Shiquan He
AU - Louwei Cui
AU - Jiaojiao Liu
AU - Sijie Wang
AU - Yanyan Song
AU - Ting He
AU - Tao Liu
AU - Huaan Zheng
AU - Yonghong Zhu
AU - Dong Li
TI - Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 3069
EP - 3087
SN - 1976-4251
AB - Medium- and low-temperature coal tar pitch can be prepared as coal-based mesophase pitch for its high value-added utilization. However, its lower aromaticity and higher content of heteroatoms (especially O atoms) led to a higher content of the resulting mesophase pitch mosaic structure. In this study, mesophase pitch was prepared by co-carbonization of high aromaticity, low oxygen content high-temperature refined pitch (RHCTP) with medium- and low-temperature coal tar refined pitch (RCTP). The impact of various blending ratios on the optical and microcrystalline structures of mesophase pitch was analyzed using polarized light microscopy, X-ray diffraction, and Raman spectroscopy. The addition of RHCTP to modify RCTP significantly enhanced the optical and microcrystalline structures of the co-carbonized products. The optimal blending ratio (R-25%) was obtained. Needle coke prepared from mesophase pitch obtained from R-25% had superior fine fiber structure, lowest average resistivity (157.37 μΩ·m) and high true density (2.125 g/cm3). The thermal conversion behavior of the blended refined pitch during co-carbonation was analyzed using thermogravimetric data of the R-25% sample through four isoconversion methods. The thermal conversion of the R-25% sample occurs in three stages: the first stage follows the Parabola law model, while the second and third stages adhere to the random nucleation and nuclei growth model. This analysis of thermal conversion kinetics offers theoretical insights for optimizing mesophase pitch preparation process conditions and reactor design.
KW - Mesophase pitch;Coal tar pitch;Co-carbonization;Thermal conversion kinetics;Reaction model
DO - 10.1007/s42823-025-00978-4
ER -
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu and Dong Li. (2025). Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch. Carbon Letters, 35(6), 3069-3087.
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu and Dong Li. 2025, "Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch", Carbon Letters, vol.35, no.6 pp.3069-3087. Available from: doi:10.1007/s42823-025-00978-4
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu, Dong Li "Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch" Carbon Letters 35.6 pp.3069-3087 (2025) : 3069.
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu, Dong Li. Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch. 2025; 35(6), 3069-3087. Available from: doi:10.1007/s42823-025-00978-4
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu and Dong Li. "Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch" Carbon Letters 35, no.6 (2025) : 3069-3087.doi: 10.1007/s42823-025-00978-4
Shiquan He; Louwei Cui; Jiaojiao Liu; Sijie Wang; Yanyan Song; Ting He; Tao Liu; Huaan Zheng; Yonghong Zhu; Dong Li. Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch. Carbon Letters, 35(6), 3069-3087. doi: 10.1007/s42823-025-00978-4
Shiquan He; Louwei Cui; Jiaojiao Liu; Sijie Wang; Yanyan Song; Ting He; Tao Liu; Huaan Zheng; Yonghong Zhu; Dong Li. Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch. Carbon Letters. 2025; 35(6) 3069-3087. doi: 10.1007/s42823-025-00978-4
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu, Dong Li. Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch. 2025; 35(6), 3069-3087. Available from: doi:10.1007/s42823-025-00978-4
Shiquan He, Louwei Cui, Jiaojiao Liu, Sijie Wang, Yanyan Song, Ting He, Tao Liu, Huaan Zheng, Yonghong Zhu and Dong Li. "Study on co-carbonization characteristics and thermal conversion kinetics of medium- and low-temperature and high-temperature refined pitch" Carbon Letters 35, no.6 (2025) : 3069-3087.doi: 10.1007/s42823-025-00978-4
