1 Engineering Research Center of Advanced Coal Coking and Efficient Use of Coal Resources, Institute of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051 2 Key Laboratory of Chemical Metallurgy Liaoning Province, University of Science and Technology Liaoning, Anshan 114051
Abstract: Three kinds of toluene soluble (named as TSM, TSOM and TSTM) were obtained via the method of solvent extraction-hot filtering-distillation, and using toluene as solvent, medium pitch (MP), oxidation modified pitch (OMP) and thermal modified pitch (TMP) as raw materials. Elemental analyzer GPC gel permeation chromatography, 1H-NMR, and FTIR spectroscopy combined with curve-fitting method were employed to study the basic properties of the resultant toluene solubles, such as aromatic index (Iar), branching index (CH3/CH2) and aromatic condensation (fa). Moreover, TGA analyzer was used to reveal the thermostability of the toluene soluble, SEM and polarizing microscope (PM) was used to observe the micro-structure of the pyrolysis products. The experimental results indicated the satisfactory aromaticity of all the three kinds of to-luene solubles, as the aromatic indices (Iar) of TSM, TSOM, and TSTM are 0.949,0.954 and 0.987, respectively. The aromatic condensations (fa) are 0.967 2,0.968 7 and 0.978 5, respectively. The branching indices (CH3/CH2) of TSM, TSOM, and TSTM are 0.200,0.297 and 0.503. It means that the number and the length of the branched chain in these three samples are in descending order. The pyrolysis characteristic temperature of TSM, TSOM, and TSTM were increased successively, which is correlated well with the indicators of Iar, CH3/CH2 and fa.
1 Öner F O, Yürüm A, Yürüm Y. Journal of Analytical and Applied Pyrolysis,2015,111,15. 2 Newman J W, Newman K L, Olabi A G. Pitch, Elsevier,2016. 3 Ren C Q, Li T H, Song F J, et al. Materials Letters,2006,60,1570. 4 Dang A L, Li H, Li T H, et al. Journal of Analytical and Applied Pyrolysis,2016,119,18. 5 Burchell T D. In: Carbon materials for advanced technologies, Burcheu TD, ed., Pergamon, New York,1999. 6 Mora E, Santamaría R, Blanco C, et al. Journal of Analytical and Applied Pyrolysis,2003,68,409. 7 Xiao N, Qiu J S. Chemical Industry and Engineering Progress,2016,35(6),1804(in Chinese). 肖南,邱介山.化工进展,2016,35(6),1804. 8 Zhu Y M, Zhao X F, Cheng J X, et al. Materials Review B: Research Papers,2017,31(6),109(in Chinese). 朱亚明,赵雪飞,程俊霞,等.材料导报:研究篇,2017,31(6),109. 9 Vasilevich M V, Pavlovich K V, Evgenevich K V, et al. U. S. patent, SU19904912707,1995. 10 Zhu X J. Chinese patent, CN20101173581,2010. 11 Harry O T, Feng C C, Charles L I, et al. U. S. patent, US19960722469,1998. 12 Jurgen S, Gerd C. U. S. patent,4259171,1981. 13 Shen J L. Chinese patent, CN 20101114911,2013. 14 Fang G, Xiong J M, Ma W M, et al. Journal of Beijing Institute of Petro-chemical Technology,2012,20(3),28(in Chinese). 方国,熊杰明,马文明,等.北京石油化工学院学报,2012,20(3),28. 15 Zhu Y M, Zhao X F, Lv J, et al. Chemical Industry and Engineering Progress,2016,35(2),555(in Chinese). 朱亚明,赵雪飞,吕君,等.化工进展,2016,35(2),555. 16 Zhu Y M, Zhao X F, Gao L J, et al. Journal of Materials Science,2016,51(17),8098. 17 Miura K, Mae K, Li W, et al. Energy & Fuels,2001,15,599. 18 Painter P C, Sobkowiak M, Youtcheff J. Fuel,1987,66,973. 19 Miura K, Mae K, Morozumi F A. Fuel and Energy Abstracts,1998,39(3),167. 20 Zhu Y M, Gao L J, Zhao X F, et al. Carbon Techniques,2016,35(4),12(in Chinese). 朱亚明,高丽娟,赵雪飞,等.炭素技术,2016,35(4),12. 21 Lv J, Gao L J, Zhu Y M, et al. Materials Review B: Research Papers,2016,30(4),127(in Chinese). 吕君,高丽娟,朱亚明,等.材料导报:研究篇,2016,30(4),127. 22 Gao L J, Zhao X F, Lai S Q, et al. Spectroscopy and Spectral Analysis,2009,29(8),2152(in Chinese). 高丽娟,赵雪飞,赖仕全,等.光谱学与光谱分析,2009,29(8),2152.
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2019, Vol. 33 
