| 负载型钒钛脱硝催化剂酸化处理与性能 |
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| 引用本文： | 李俊杰,牟洋,杨娟,余剑,段正康,许光文,熊北辰.负载型钒钛脱硝催化剂酸化处理与性能[J].化工学报,2013,64(4):1249-1255. |
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| 作者姓名： | 李俊杰 牟洋 杨娟 余剑 段正康 许光文 熊北辰 |
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| 作者单位： | 1. 中国科学院过程工程研究所多相复杂系统国家重点实验室,北京 100190;
2. 湘潭大学化工学院,湖南 湘潭 411105;
3. 沈阳化工大学化学工程学院,辽宁 沈阳 110142;
4. 北京十一学校,北京100170 |
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| 基金项目： | 中国科学院国际合作重点项目(0829011198);国家高技术研究发展计划项目(2010AA065004)~~ |
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| 摘 要： | 以商业TiO2为载体,采用浸渍法制备了V2O5-WO3-TiO2/SO42-催化剂,考察了硫酸酸化载体TiO2的顺序及硫酸酸化量对氨气选择性催化还原NO活性的影响,采用XRD、BET、FT-IR、TG-DTA、TPD等手段对催化剂进行了表征。BET表征结果表明,随着酸化处理的用酸量增大,催化剂表面积降低;但FT-IR、TG结果表明,增大酸化处理用硫酸量提高了硫酸根与钨之间的电子交互作用。程序升温的活性测试结果表明,硫酸酸化处理对催化剂活性具有促进作用,结合NH3-TPD表征证实了具有酸化处理程序制备的催化剂可以增强表面酸性位,从而使催化剂具有高活性。
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| 关 键 词： | 脱硝催化剂 V2O5-WO3-TiO2 选择性催化还原 酸化 |
| 收稿时间： | 2012-04-05 |
| 修稿时间： | 2012-11-29 |
Properties of sulfation supported V/Ti denitration catalyst |
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| LI Junjie,MU Yang,YANG Juan,YU Jian,DUAN Zhengkang,XU Guangwen,XIONG Beichen.Properties of sulfation supported V/Ti denitration catalyst[J].Journal of Chemical Industry and Engineering(China),2013,64(4):1249-1255. |
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| Authors: | LI Junjie MU Yang YANG Juan YU Jian DUAN Zhengkang XU Guangwen XIONG Beichen |
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| Affiliation: | 1. State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. Chemical Engineering Institute, Xiangtan University, Xiangtan 411105, Hunan, China;
3. School of Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang 110142, Liaoning, China;
4. Beijing National Day School, Beijing 100039, China |
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| Abstract: | A series of V2O5-WO3-TiO2/SO42- catalysts were prepared with the impregnation method using nano-TiO2 support sulfated according to three different orders of sulfating TiO2 support and with different acid amounts.Characterization of the catalysts with XRD, BET, FT-IR and TG-DTG showed that sulfating the catalyst support decreased the specific surface area of the resulting catalyst but did not vary its crystal form.Sulfation caused as well strong interactions between WO3 and the sulfate of the loaded active component.Temperature-programmed activity tests demonstrated further that sulfation increased catalytic activity by increasing the acidity of the catalyst at 120—400℃.This was confirmed also with NH3-TPD for the prepared V/Ti denitration catalysts. |
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| Keywords: | denitration catalyst V2O5-WO3-TiO2" target="_blank">2O5-WO3-TiO2')" href="#">V2O5-WO3-TiO2 selective catalytic reduction acidification |
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