不同路易斯酸对中间相沥青转化的影响  

Effect of different Lewis acids on the transformation of mesophase pitches

作　　者：张博[1] 宋怀河[1] 曹雷[2] 陈晓红[1] 马兆昆[1] 杨万吉[1] 李智鹏[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]西门子(中国)有限公司,北京100102

出　　处：《炭素技术》2013年第4期6-9,18,共5页Carbon Techniques

摘　　要：中间相沥青具有高炭化收率、高密度和容易石墨化等特点,使其具有广阔的应用前景。人们投入了大量精力研究AlCl3催化中间相沥青的形成与转化,却很少关注其他金属氯化物的催化研究。本文使用不同浓度的AlCl3和ZrCl4作为催化剂催化蒽的热缩聚反应,结果表明,使用AlCl3作为催化剂的沥青较使用ZrCl4作为催化剂的沥青具有更高的聚合度和更好的光学结构;反应时间的延长和ZrCl4催化剂浓度的增加可以很好地加速热缩聚反应的进行和中间相沥青的形成;在使用ZrCl4作为催化剂时,由于反应进行的速度更慢使更容易对其热缩聚过程加以控制。Mesophase pitch exhibits high carbon yield, high density and easy graphitization, so it has wild applications in many application fields. Many efforts have been carried on the transformation of mesophase pitches in the presence of A1C13, but little attention has been put on other metal chloride catalysts. In the present work, A1C13 and ZrCL at different concentrations were used as catalysts. The pitches catalyzed by A1C13 exhibit higher extent of poly-condensation and better optical texture than the pitches catalyzed by ZrCL. The higher amount of ZrCl4 in anthracene and longer soaking time can accelerate the condensation of aromatics and transformation of mesophase. Using ZrCh as catalyst makes the poly-eondensation slower and more easier to control.

关 键 词：中间相沥青 热缩聚 路易斯酸 

分 类 号：TQ522.65[化学工程—煤化学工程]