文献类型：期刊文献

英文题名：Kinetics of heterogeneous oxidation of concentrated ammonium sulfite

作者：Zhou, Jinghong[1]; Li, Wei[1]; Xiao, Wende[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Chem React Engn, UNILAB, Shanghai 200237, Peoples R China

年份：2000

卷号：55

期号：23

起止页码：5637

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：2001035430187);WOS:【SCI-EXPANDED(收录号:WOS:000165943200007)】；

语种：英文

外文关键词：oxidation; ammonium sulfite; heterogeneous; kinetics

摘要：The heterogeneous oxidation of ammonium sulfite solution was investigated in stirred cell and packing column. The concentration range of sulfite is 0.05-4.7 gmol/l and that of oxygen in the gas phase is 21-100%, temperature range is 30-75 degreesC. The results indicated that there is a critical sulfite concentration, below which the reaction order with respect to sulfite is 0.2, while above which the order turns to - 1.0. The reaction order with respect to oxygen is 1. Apparently, the ionic strength was found to inhibit the oxidation. The apparent energy of activation determined is 32.7 kJ/mol. (C) 2000 Elsevier Science Ltd. All rights reserved.