新型炭材料（中英文）2025，Vol.40Issue(6)：1336-1346,11.DOI:10.1016/S1872-5805(25)60969-3
AlCl3催化体系中加入对苯二甲酸对煤焦油沥青基中间相形成的影响
Effect of the addition of terephthalic acid on the formation of coal tar pitch-based mesophase in the AlCl3 catalytic system
摘要
Abstract
Reducing the amount of aluminum chloride needed for the catalytic pre-paration of high quality meso-phase and carbon materials is important and we have found that using terephthalic acid(PTA)as a co-catalyst serves this purpose.By adding 3%(mass fraction)AlCl3 and 0.9%(mass fraction)PTA to the coal tar pitch,approxim-ately 90%mesophase was synthesized.The product(M-3-0.9)had a high stacking or-der(Lc=3.1 nm,n=10.14)and aromaticity(0.942).By adding PTA,a larger anisotropy content was produced using a smaller amount of AlCl3.The PTA parti-cipated in the polycondensation reaction through its own benzene ring structure to increase the catalytic activity.However,when its content was higher than 1.5%,the number of oxygen-containing groups in the product increased which was unfavor-able for the aromatic lamellar stacking and gave rise to more isotropic structures.The work opens up a new way to prepare mesophase by a catalytic method.关键词
中间相沥青/煤沥青/AlCl3催化/对苯二甲酸/催化缩聚Key words
Mesophase pitch/Coal tar pitch/AlCl3 catalysis/Terephthalic acid/Catalytic polycondensation分类
化学化工引用本文复制引用
LI Hui,YANG Tao,SONG Yan,ZHAO Ning,MA Zi-hui,QI Su-xia,CUI Zhen-hai,TIAN Xiao-dong,LIU Zhan-jun..AlCl3催化体系中加入对苯二甲酸对煤焦油沥青基中间相形成的影响[J].新型炭材料（中英文）,2025,40(6):1336-1346,11.基金项目
This work was supported by the National Natur-al Science Foundation of China(52072383,U21A2061),Natural Science Foundation of Shanxi Province(202203021211002,202203021222399)and the Innovation Fund of Institute of Coal Chemistry,Chinese Academy of Sciences(SCJC-XCL-2022-08). 国家自然科学基金项目(52072383,U21A2061) （52072383,U21A2061）
山西省自然科学基金项目(202203021211002,202203021222399) （202203021211002,202203021222399）
中国科学院山西煤炭化学研究所创新基金资助项目(SCJC-XCL-2022-08). （SCJC-XCL-2022-08）
