文献类型：期刊文献

中文题名：稀土氧化物上SO_2和NO的催化还原Ⅳ.掺杂Ce的钙钛矿型氧化物催化剂的脱硫和脱氮研究

英文题名：Catalytic Reduction of SO_2 and NO by CO over Rare Earth Oxides Ⅳ.Desulfurization and Denitrification Using Perovskites Doped with Ce as Catalysts

作者：孙凡[1];朱涛[2];王磊[3];马建新[3]

机构：[1]华东理工大学华昌聚合物有限公司,上海200237;[2]华东理工大学招生办公室,上海200237;[3]华东理工大学化学系,上海200237

年份：2005

卷号：46

期号：7

起止页码：389

中文期刊名：化学世界

外文期刊名：Chemical World

收录：北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(29777008)

语种：中文

中文关键词：钙钛矿氧化物;二氧化硫;一氧化碳;一氧化氮;脱硫;脱氮;催化还原

外文关键词：perovskite oxide; SO_2; NO; CO; desulfurization; denitrification; catalytic reduction

摘要：考察了掺杂Ce对钙钛矿氧化物催化剂LaCoO3的活化、单独脱硫及同步脱硫脱氮活性的影响。结果表明Ce的掺杂使单独脱硫和同步脱硫脱氮的活性降低。当以LaCoO3为催化剂,在温度600℃,空速21.6Lh·g的条件下,SO2的转化率大于99%,元素S的选择性也大于99%。在钙钛矿上可以达到同步脱硫脱氮。在温度大于500℃,空速为2.16Lh·g的条件下,SO2和NO的转化率可以同时达到95%以上。
LaCoO_3 doped with Ce catalysts were tested for the reduction of SO_2 by CO and simultaneous reduction of SO_2 and NO by CO to elemental S and N_2. The activities for desulfurization and denitrification were decreased because of the Ce doping. Over 99% conversion in SO_2 and over 99% selectivity to elemental S could be achieved under the following conditions: catalyst, LaCoO_3; temeperature, 600 ℃; and gas hourly space velocity, 21.6 L/h·g. Simultaneous reduction of SO_2 and NO by CO to elemental S could be achieved as well. Over 99% conversion in SO_2 and NO could be achieved simultaneously under the following conditions: temeperature, 500 ℃; and gas hourly space velocity 2.16 L/h·g.