@article{ART003274560},
author={He Shiquan and Cui Louwei and Liu Jiaojiao and Wang Sijie and Song Yanyan and He Ting and Liu Tao and Zheng Huaan and Zhu Yonghong and Li Dong},
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 - He Shiquan
AU - Cui Louwei
AU - Liu Jiaojiao
AU - Wang Sijie
AU - Song Yanyan
AU - He Ting
AU - Liu Tao
AU - Zheng Huaan
AU - Zhu Yonghong
AU - Li Dong
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 -
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong and Li Dong. (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.
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong and Li Dong. 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
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong, Li Dong "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.
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong, Li Dong. 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
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong and Li Dong. "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
He Shiquan; Cui Louwei; Liu Jiaojiao; Wang Sijie; Song Yanyan; He Ting; Liu Tao; Zheng Huaan; Zhu Yonghong; Li Dong. 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
He Shiquan; Cui Louwei; Liu Jiaojiao; Wang Sijie; Song Yanyan; He Ting; Liu Tao; Zheng Huaan; Zhu Yonghong; Li Dong. 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
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong, Li Dong. 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
He Shiquan, Cui Louwei, Liu Jiaojiao, Wang Sijie, Song Yanyan, He Ting, Liu Tao, Zheng Huaan, Zhu Yonghong and Li Dong. "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
