| Pt/Ba/TiCeO催化剂上NOx 的存储和抗硫性能研究 |
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| 引用本文： | 谢颖,金正来,陈英,马玉刚,陈小平,陈敏东.Pt/Ba/TiCeO催化剂上NOx 的存储和抗硫性能研究[J].燃料化学学报,2011,39(4):300-306. |
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| 作者姓名： | 谢颖 金正来 陈英 马玉刚 陈小平 陈敏东 |
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| 作者单位： | 1.Department of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China,;
2.College of Environmental Science and Engineering, Nanjing University of Information Science &Technology, Nanjing 210044, China;
3.Zhejiang Ocean University, Zhoushan 316000, China |
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| 基金项目： | 国家自然科学基金(2047603); 广东省自然科学基金(7301284) |
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| 摘 要： | 采用共沉淀-浸渍法制备了新型NOx储存-还原催化剂Pt/Ba/TiCeO，考察了不同反应气氛对载体和催化剂上NOx存储性能的影响，并用Ｘ射线衍射（XRD）和程序升温脱附（TPD）等方法对催化剂进行了表征。结果表明，Pt/Ba/TiCeO中TiCeO和BaO/TiCe具有较大比表面积（230m2/g和90m2/g），Ba不仅起结构助剂作用，使催化剂的结构稳定，而且Ba的碱性又有利于NOx的吸附。Pt主要起催化氧化作用，催化NO氧化生成NO2，NO2 比NO 更容易与BaO/TiCeO成盐，促进NOx的存储。Pt/Ba/TiCeO催化剂中存在一储存活性位，它们是Ba位与TiCeO位组合。SO2对Pt/BaO/TiCeO催化剂的NOx储存性能影响较小，主要是Pt/BaO/TiCeO上形成的硫酸盐分解还原峰温度较低（410℃），硫化物易分解还原脱除，其抗硫中毒能力较强。
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| 关 键 词： | style="font-size: 9pt line-height: NO150%">NO style="font-size: 9pt line-height: x150%">x style="font-size: 9pt line-height: " target="_blank">150%"> 存储 Pt/BaO/TiCeO 贫燃 抗硫 |
| 收稿时间： | 2010-06-11 |
Study on the properties of Pt/ Ba/TiCeO catalyst for NO_x storage and resistance to SO_2 |
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| XIE Ying,JIN Zheng-lai,CHEN Ying,MA Yu-gang,CHEN Xiao-ping,CHEN Min-dong.Study on the properties of Pt/ Ba/TiCeO catalyst for NO_x storage and resistance to SO_2[J].Journal of Fuel Chemistry and Technology,2011,39(4):300-306. |
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| Authors: | XIE Ying JIN Zheng-lai CHEN Ying MA Yu-gang CHEN Xiao-ping CHEN Min-dong |
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| Institution: | XIE Ying1,JIN Zheng-lai1,2,CHEN Ying1,3,MA Yu-gang1,CHEN Xiao-ping1,CHEN Min-dong2 (1.Department of Chemical and Environmental Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China,2.College of Environmental Science and Engineering,Nanjing University of Information Science & Technology,Nanjing 210044,3.Zhejiang Ocean University,Zhoushan 316000,China) |
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| Abstract: | A novel NOx-storage-reduction(NSR) catalyst of Pt/Ba/TiCeO was prepared by coprecipitation-impregnation method and the effects of the reaction atmosphere on its properties for NOx storage was investigated.The catalysts were characterized by means of N2 adsorption,X-ray diffraction(XRD) and temperature-programmed desorption(TPD).The results indicate that the specific surface areas of TiCeO and BaO/TiCeO were as high as 230m2/g and 90m2/g respectively.For the component of Ba,not only did it act as structural ... |
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| Keywords: | NOx storage Pt/Ba/TiCeO lean-burn sulfur-resistance |
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