Hydrogenation of coal tar pitch for improved mesophase pitch molecular orientation and carbon fiber processing

J Guo, Z Li, B Li, P Chen, H Zhu, C Zhang, B Sun… - Journal of Analytical and …, 2023 - Elsevier
The high softening point and mosaic optical textures of coal tar pitch (CTP)-derived
mesophase pitches are the main factors limiting their application in high performance …

Production of gasoline and diesel from coal tar via its catalytic hydrogenation in serial fixed beds

T Kan, X Sun, H Wang, C Li, U Muhammad - Energy & fuels, 2012 - ACS Publications
Clean liquid fuel was produced from the catalytic hydrogenation of coal tar using two serial
fixed beds. Hydrofining catalyst of MoNi/γ-Al2O3 and hydrocracking catalyst of WNiP/γ …

Modified characteristics of mesophase pitch prepared from coal tar pitch by adding waste polystyrene

X Cheng, Q Zha, X Li, X Yang - Fuel Processing Technology, 2008 - Elsevier
The toluene soluble of coal tar pitch was carbonized with waste polystyrene. The properties
of mesophase pitches were characterized using polarized light optical microscope, apparent …

Hydrogenation behaviors and structural variations of subfraction of coal tar pitch and preparation of mesophases with well-developed optical textures

M Qi, S Huang, B Nurlanbek, T Teng, J Liang… - Journal of Analytical and …, 2024 - Elsevier
The heavy fraction (PA) and the medium fraction (PB) of coal tar pitch (CTP) were
independently hydrogenated by tetrahydronaphthalene (THN) and then blended with the …

Preparation of petroleum-based mesophase pitch toward cost-competitive high-performance carbon fibers

S Ko, JE Choi, CW Lee, YP Jeon - Carbon Letters, 2020 - Springer
Spinnable mesophase pitch precursor containing more than 98% mesophase content was
successfully prepared from FCC-DO (fluid catalytic cracking-decant oil) without …

Study on the preparation of mesophase pitch from modified naphthenic vacuum residue by direct thermal treatment

D Liu, B Lou, M Li, F Qu, R Yu, Y Yang, C Wu - Energy & Fuels, 2016 - ACS Publications
Two feedstocks (LPA and HPA) obtained from modification of naphthenic vacuum residues
were selected to prepare mesophase pitch by direct thermal treatment. The influence of …

Study of the modification of coal-tar pitch with p-methyl benzaldehyde

Q Lin, T Li, Y Ji, W Wang, X Wang - Fuel, 2005 - Elsevier
Coal-tar pitch is modified with p-methyl benzaldehyde (PMB) in the presence of p-toluene
sulfonic acid (PTS). The main characteristics of the modified pitches such as coking value …

Co-carbonization behaviors of petroleum pitch/waste SBS: Influence on morphology and structure of resultant cokes

Y Cheng, Q Zhang, C Fang, Y Ouyang, J Chen… - Journal of Analytical and …, 2018 - Elsevier
Petroleum pitch was modified by waste styrene-butadiene-styrene copolymer (SBS) and the
cokes were obtained via the co-carbonization method. The waste SBS content and the co …

Investigation on preparation of mesophase pitch by the cocarbonization of naphthenic pitch and polystyrene

D Liu, M Li, F Qu, R Yu, B Lou, C Wu, J Niu… - Energy & …, 2016 - ACS Publications
Two modified pitches with softening points of 70° C (LPA) and 110° C (HPA) produced from
modification of naphthenic vacuum residue were cocarbonized with polystyrene (PS) …

Meliorate optical textures and mesophase contents by promising approach of deasphalting of petroleum residues

S Kumar, M Srivastava - Journal of industrial and engineering chemistry, 2017 - Elsevier
The aim of this work is to study melioration in mesophase formation behaviour by
deasphalting of petroleum residues. Pitches prepared from VRs have undesirable high …