Change in Aggregate Shape of Heat Treated Carbon Nanoparticles

作     者：Kiminori Ono Mlkl Yanaka Aki Watanabe Yoshiya Matsukawa Yasuhiro Saito Hideyuki Aoki OkiteruFukuda Takayuki Aoki Togo Yamaguchi 

作者机构：Department of Chemical Engineering Graduate School of Engineering Tohoku University Sendai 980-8579 Japan ASAHI CARBON Co. Ltd. Niigata 950-0883 Japan 

出 版 物：《Journal of Chemistry and Chemical Engineering》 (化学与化工（英文版）)

年 卷 期：2013年第7卷第4期

页      面：326-333页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：Carbon black soot heat treatment. 

摘      要：To better understand the fusion mechanism of heated carbon black, heat treatment is conducted for carbon black produced by benzene pyrolysis. The effects of （a） heating time, （b） heating temperature and （c） heating rate on the aggregate shape and mean primary particle diameter of the carbon black are investigated using TEM （transmission electron microscopy）. The mean primary particle diameter does not change significantly when carbon black is heat treated. For short heating times and low heating temperatures, the aggregate shapes become simple when compared with those of non-heated carbon black, and shapes become complex with an increase in the heating time. Also, for low heating rates, the aggregate shapes become significantly simple when compared with those of non-heated carbon black. The results of this study suggest that sintering between primary particles is promoted under relatively low heating temperatures, and Ostwald ripening among aggregates is promoted under relatively high heating temperatures.