文献类型：期刊文献

英文题名：Hydropurification of terephthalic acid over Pd/AC I. Apparent kinetics of 4-CBA hydrogenation on catalysts of different sizes

作者：Zhou, Jing-Hong; Shen, Guang-Zhao; Li, Ping; Dai, Ying-Chun; Yuan, Wei-Kang

机构：[1] UNILAB Research Center of Chemical Reaction Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2006

卷号：32

期号：5

起止页码：503

外文期刊名：Huadong Ligong Daxue Xuebao /Journal of East China University of Science and Technology

收录：EI(收录号：2006259949813)

语种：英文

摘要：A study is carried out on purification of crude terephthalic acid using a batch autoclave. The dependence of 4-CBA hydrogenation rate on reaction conditions such as hydrogen atmosphere, agitation rate, temperature and catalyst particle size is carefully investigated. Results indicate that the hydrogen atmosphere has little effect on hydrogenation reaction within the industrially-acknowledged boundary. However, the hydrogenation rate is sensitive to temperature and catalyst particle size, implying strong diffusion resistance in the hydropurification process. As a result, kinetic equations for hydrogenation of 4-CBA under different conditions are obtained from the experimental data. The activation energy as well as the reaction order are estimated based on the power-law kinetics under various conditions.