Comparative Study of the Modification of Coal Tar Pitch for Higher Carbonization Yield and Better Properties

作     者：张文娟 李铁虎 卢萌 侯翠岭 ZHANG Wenjuan;LI Tiehu;LU Meng;HOU Cuiling

作者机构：Department of Materials Science and Engineering Northwestern Polytechnical University Xi' an 710072 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2013年第21卷第12期

页      面：1391-1396页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Supported by the Natural Science Foundation of Shaanxi Province(2009GM6001-1) the Foundation for Fundamental Research of Northwestern Polytechnical University(JC201030) 

主　　题：coal tar pitch cinnamaldehyde boric acid carbonization 

摘      要：Parent coal tar pitch(CTP)was modified with boric acid(BA),cinnamaldehyde(CMA)and the mixture of BA and CMA,*** parent CTP and three modified CTPs were characterized by elemental analysis,thermogravimetric analysis,Fourier transform infrared(FT-IR)spectroscopy and scanning electron *** four samples were carbonized at different temperatures and resultant carbonized products were characterized by FT-IR spectroscopy,X-ray diffraction and polarized-light *** results show that the morphologies and carbonization behaviors of the parent CTP and modified CTPs are quite *** carbonization yield of the CTP modified with the mixture of BA and CMA is higher than that of CTP modified with BA or CMA *** addition,the modification of CTP with 7 g of BA and 10 ml of CMA results in an increase in carbonization yield by5.64%.During the pyrolysis of modified CTPs,the dehydration of BA or the distillation of CMA occurs at the temperature lower than 300°C,and methyl and methylene groups of the modified CTPs disappear gradually as temperature ***,the modification of CTP by the mixture of BA and CMA results in more intensive mesophase spheres than other modified CTPs,and the modified CTP is easier to be carbonized to form graphitic carbon.