Elsevier

New Carbon Materials

Volume 34, Issue 3, June 2019, Pages 258-266
New Carbon Materials

RESEARCH PAPER
Co-carbonization of brominated petroleum pitch, coal tar pitch and benzoyl chloride to prepare cokes

https://doi.org/10.1016/S1872-5805(19)60015-6Get rights and content

Abstract

After the quinoline insoluble fraction was removed, petroleum pitch (PP) was brominated under ultraviolet light irradiation for 3 to 9 h with a bromine to PP mass ratio of 1:20 to prepare brominated PPs (BPPs). Synthetic pitches (SPs) were produced from these BPPs by mixing them with refined coal tar pitch (RCTP) using a solvent (5 wt% benzoyl chloride)-assisted mixing method, using different mass ratios of BPP/RCTP, and BPPs with different irradiation times. The SPs were carbonized to prepare semicokes. The properties and carbonization behavior of the SPs were investigated by FT-IR spectrometry, 1H NMR, thermogravimetry and viscometry, and the optical texture of the semicokes was examined by polarized-light microscopy, X-ray diffraction and scanning electron microscopy. Results indicate that converting PP into BPPs increases its reactivity with RCTP, which is beneficial for developing an ordered texture during carbonization. A high-quality coke with a highest yield of 50.1 wt% was prepared from the optimum SP made from BPP brominated for 6 h and a mass ratio of BPP to RCTP of 1: 9.

References (35)

Cited by (11)

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