Controllable synthesis of a carbonaceous pitch from molecular dimension by a novel method of chlorination-dechlorination

Liu, Jinchang; Li, Yaping; Shen, Chenyang; Fan, Maohong; Xie, Qiang; Liang, Dingcheng

doi:10.1016/j.fuel.2022.125132

Cited by 10 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coal liquefaction residue was used as raw material to controllably synthesize the pitch precursor for carbon fiber from the molecular dimension by chlorination–dechlorination method. 101 The C/H ratio, average molecular weight, and aromaticity were increased by chlorination–dechlorination. In addition, the pitch precursor derived by the chlorination–dechlorination method has a more linear and crosslinking molecular structure, and it exhibits better thermal stability and thermochemical properties due to the linear and crosslinking molecular structure.…”

Section: Halogenation–dehalogenationmentioning

confidence: 99%

Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review

Liu

et al. 2023

Journal of Engineered Fibers and Fabrics

Self Cite

View full text Add to dashboard Cite

Pitch-based carbon fiber, as one of the important engineering materials, has been widely used in aerospace, defense, sports, and other fields. In the long production process of pitch-based carbon fiber, the property of pitch precursor is significant for the mechanical performance of obtained carbon fiber. Thus, it is crucial to improve the property of pitch precursor by efficient means. Halogenation–dehalogenation is a newly developed method for the controllable synthesis of a pitch precursor from the molecular dimension, including fluorination–defluorination, chlorination–dechlorination, and bromination–debromination. This work reviewed the mechanism and application, as well as the advantages and disadvantages of each halogenation–dehalogenation method.

show abstract

Section: Halogenation–dehalogenationmentioning

confidence: 99%

Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review

Liu

et al. 2023

Journal of Engineered Fibers and Fabrics

Self Cite

View full text Add to dashboard Cite

show abstract

Metal Chloride‐Induced Hydrogen Transfer Enables Efficient Conversion of Aromatic Hydrocarbons for Sodium Storage

Ji,

Zhao,

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

The cost‐effective synthesis of high‐performance hard carbons (HCs) is a key step of sodium‐ion batteries toward practical applications. Considering the rich resource of low‐value aromatic hydrocarbons (e.g., pitch), there is tremendous interesting in its conversion into value‐added HCs. Unfortunately, it still lacks an efficient way for the synthesis, in addition to the time‐consuming oxygen contamination of the carbon framework. Herein, a universal strategy is reported that enables the efficient synthesis of HCs from pitch by modulating hydrogen transfer using metal chlorides. CuCl2 is selected as the model modulator and the effect of different metal chlorides (FeCl3, AlCl3, ZnCl2, and MgCl2) are further explored. Based on material characterizations and density functional theory calculation employing 1‐methylnaphthalene as the model molecule, it shows that the hydrogen capture and chlorination reactions mediated by CuCl2 and FeCl3 are thermodynamically favored, which promote the crosslinking of pitch to form HCs. After optimization, the derived HC exhibits superior performance of reversible capacity of 304.8 mAh g−1 and a high initial Columbic efficiency of 88.4%. These discoveries provide new insights into the synthesis of HCs from aromatic hydrocarbons, facilitating their utilization in electrochemical energy storage.

show abstract

Chlorination–dechlorination of coal liquefaction residue using benzyl chloride for general-purpose carbon fiber synthesis

Liu

Shen²,

Liu³

et al. 2022

J Mater Sci

View full text Add to dashboard Cite

Controllable synthesis of a carbonaceous pitch from molecular dimension by a novel method of chlorination-dechlorination

Cited by 10 publications

References 43 publications

Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review

Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review

Metal Chloride‐Induced Hydrogen Transfer Enables Efficient Conversion of Aromatic Hydrocarbons for Sodium Storage

Chlorination–dechlorination of coal liquefaction residue using benzyl chloride for general-purpose carbon fiber synthesis

Contact Info

Product

Resources

About