Abstract: Nitrogen-rich carbon materialas a functional material with excellent performance has broad application prospects in chemical catalysis, adsorption and separation, electrode materials, hydrogen storage, dye wastewater treatment and other fields. Recently, nitrogen-rich pitch as an excellent nitrogen-rich precursor has been favored by many researchers because of its rich raw materials, relatively simple preparation method and easy mass production. In this work, four quinoline pitches were synthesized by self-rising pressure method using the nitrogen-containing mo-nomer quinoline as raw material and 5%(mass fraction) AlCl3 as catalyst. The physicochemical properties of four QLPs were characterized by Fourier transform infrared spectroscopy, gel permeation chromatography and thermogravimetric analyzer. The change of nitrogen content and microstructure of quinoline pitch-derived carbon (CQLP) with carbonization temperature was studied by elemental analysis, polarized light microscopy (PLM), Raman spectroscopy and X-ray diffraction (XRD) technique. The results showed that the yield of the four QLPs was all about 90%, the softening point was around 120 ℃, the ash content was less than 2.5%, the mass average molecular weight was 360—390, and the number average molecular weight was 250—260. The aromatic index (Iar) of the four QLPs was 0.55—0.69, the ortho-substitution index (Ios) was 0.52—0.72, the branched chain index (CH3/CH2) was 0.11—0.23, and the residual carbon yields at 750 ℃ were in the range of 29.0%—50.7%, depending on the synthesis conditions. The nitrogen content of QLP was 8.22%, and its nitrogen content increased first and then decreased slightly with the increase of carbonization temperature. The CQLP obtained at 750 ℃ had the highest nitrogen content of 9.70%. The microstructure of the three CQLPs carbon was mainly lamellar and fibrous textures, which account for about 50%—60% and 10%—30% respectively, showing good graphitization. With the increase of carbonization temperature, the carbon microcrystal size of CQLP increased, while the layer spacing decreased, but the regularity decreased.
1 Mochida I, Shimizu K, Koral Y, et al. Carbon, 1988, 26(6), 843. 2 Mochida I, Koraia Y, Kua C H, et al. Carbon, 2000, 38(2), 305. 3 Dumont M, Dourges M A, Bourrat X, et al. Carbon, 2005, 43(11), 2277. 4 Mochida I, Yoon S H, Qiao W M. Journal of the Brazilian Chemical Society, 2006, 17(6), 1059. 5 Zhang Bo, Song Huaihe, Chen Xiaohong, et al. Journal of Analytical and Applied Pyrolysis, 2013, 104, 433. 6 Han M X, Lai S Q, Liu X N, et al. Carbon Techniques, 2014(5), 18(in Chinese). 韩明喜, 赖仕全, 刘兴南, 等. 炭素技术, 2014(5), 18. 7 Chen S L, Guo J G, Zhou M H, et al. Journal of Hunan University, 2017(6), 81(in Chinese). 陈石林, 郭建光, 周娩红, 等.湖南大学学报, 2017(6), 81. 8 Hong H Q, Deng S, Lai S Q, et al. Chemical Industry and Engineering Progress, 2020, 39(7), 2724(in Chinese). 洪海球, 邓宋, 赖仕全, 等.化工进展, 2020, 39(7), 2724. 9 Fernández A L, Granda M, Bermejo J, et al. Carbon, 1999, 37( 8), 1247. 10 Guo Y S, Zha Q F, Wu M B. Carbon techniques, 2002(2), 11(in Chinese). 郭燕生, 查庆芳, 吴明铂.炭素技术, 2002(2), 11. 11 Li S B, Sun Q Q, Wang Y W, et al. New chemical materials, 2015, 43(2), 7(in Chinese). 李士斌, 孙启乾, 王玉伟, 等.化工新型材料, 2015, 43(2), 7. 12 Yang K S, Kim Y A, Shin K S, et al. Polymer (Korea), 1997, 21(4), 532. 13 Watanabe F, Ishida S, Korai Y, et al. Carbon, 1999, 37(6), 961. 14 Wang Y G, Korai Y, Mochida I, et al. Carbon, 2001, 39(11) 1627. 15 Zhai Y P, Dou Y Q, Zhao D Y, et al. Advanced materials, 2011, 23(42), 4828. 16 Qie L, Chen W M, Wang Z H, et al. Advanced Materials, 2012, 24(15), 2047. 17 Shen W Z, Fan W B. Journal of Materials Chemistry A, 2013, 1(4), 999. 18 Zhong C, Gong S, Jin L, et al. Materials Letters, 2015, 156, 1. 19 Yue D, Yang J X, Sun B, et al. New Carbon Materials, 2020, 35(1), 50(in Chinese). 乐丹, 杨建校, 孙兵, 等. 新型炭材料, 2020, 35(1), 50. 20 Yang W, Li R, Hou L Q, et al. New Carbon Materials, 2020, 35(3), 253(in Chinese). 杨旺, 李瑞, 候利强, 等.新型炭材料, 2020, 35(3), 253. 21 Mochida I, An K H, Korai Y. Carbon, 1995, 33(8), 1069. 22 Mochida I, Sakanishi K, Korai Y, et al. Carbon, 1996, 34(5), 601. 23 Mochida I, Ku C H, Yoon S H, et al. Carbon, 1999, 37(2), 323. 24 Xiao N, Song J W, Wang Y W, et al. Carbon, 2018, 128, 201. 25 Minto E, Ryo I, Nobuko Y, et al. Electrochemistry, 2020, 88(3), 88. 26 Gargiulo V, Apicella B, Alfè M, et al. Energy & Fuels, 2015, 29, 5714. 27 Guillen M D, Iglesias M J, Dominguez A, et al. Energy & Fuels, 1992, 6(4), 518. 28 Yue L, Chen Z, Lai S Q, et al. Spectroscopy and Spectral Analysis, 2020, 40(8), 2468(in Chinese). 岳莉, 陈召, 赖仕全, 等.光谱学与光谱分析, 2020, 40(8), 2468. 29 Li X, Hayashi J I, Li C Z. Fuel, 2006, 85(12/13), 1700. 30 Reich S, Thomsen C. Philosophical Transactions of the Royal Society A, 2004, 362, 2271. 31 Yue L, Zhu Y M, Gao L J, et al. Materials Reports B:Research Papers, 2020, 34(4), 08077(in Chinese). 岳莉, 朱亚明, 高丽娟, 等. 材料导报:研究篇,2020,34(4),08077. 32 Lu L, Sahajwalla V, Kong C, et al. Carbon, 2001, 39(12), 1821. 33 Manoj B, Kunjomana A G. International Journal of Electrochemical Science, 2012, 7(4), 3127.
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2022, Vol. 36 
