文献类型：期刊文献

英文题名：Research into the kinetics of COS elimination from syngas at moderate temperatures

作者：Wang, Fang-fang[1,2]; Zhang, De-xiang[1,2]; Zhao, Hai[1,2]; Wu, Ting-ting[1,2]; Gao, Jin-sheng[1,2]

机构：[1] Department of Chemical Engineering for Energy Resources, East China University of Science and Technology, Shanghai, 200237, China; [2] Key Laboratory of Coal Gasification, Ministry of Education, Shanghai, 200237, China

年份：2010

卷号：89

期号：4

起止页码：888

外文期刊名：Fuel

收录：EI(收录号：20100512675799)

语种：英文

外文关键词：Iron oxides - Desulfurization - Kinetics - Activation energy - Reaction kinetics

摘要：Thermogravimetry at constant temperature and programmed temperatures is used to study reaction kinetics and possible mechanism of COS desulfurization using ferric oxide as the main active component. The apparent reaction activation energy is smaller in hydrogen atmosphere than in nitrogen. The desulfurization reaction of COS takes place easily in a hydrogen atmosphere. At the same time, the influence of the reducing temperature on the desulfurizing reaction was also studied in the TGA apparatus and was shown to play an important part for ferric desulfurization. The optimum temperature for the reducing reaction is under 360 °C. The kinetics of the COS removal reaction are approximately first-order. When the reaction gas contains hydrogen, the apparent reaction activation energy is 12.36 kJ mol-1, in contrast to 21.92 kJ mol-1 in the absence of hydrogen. Crown Copyright ? 2009.