| Fe/beta分子筛催化N2O分解 |
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| 引用本文： | 徐冰,高春光,王永钊,赵永祥.Fe/beta分子筛催化N2O分解[J].工业催化,2018,26(1):36-41. |
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| 作者姓名： | 徐冰 高春光 王永钊 赵永祥 |
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| 作者单位： | 山西大学化学化工学院,精细化学品教育部工程研究中心,山西 太原 030006 |
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| 基金项目： | 国家自然科学基金(21673132);山西省国际合作项目(201603D421025) |
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| 摘 要： | 通过液相离子交换法对H-beta分子筛进行改性得到Fe/beta分子筛,并应用于催化N2O直接分解反应,考察加入HNO3后的体系pH值对Fe/beta催化性能的影响。采用N2物理吸附-脱附、XRD、IR、DR UV-Vis、NH3-TPD和ICP-OES等对Fe/beta分子筛进行分析表征。结果表明,溶液pH值降低过程中催化剂的结晶度、比表面积、孔容及Fe3+含量呈现先增加后减少。溶液pH为2.0时所制备的Fe/beta分子筛催化N2O完全分解温度明显低于pH为2.6和1.0时制备的Fe/beta催化剂,显示了较好的催化活性。
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| 关 键 词： | 催化化学 Fe/beta分子筛 液相离子交换 N2O直接分解 |
Study of Fe/beta zeolite in catalytic N2O decomposition |
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| Xu Bing,Gao Chunguang,Wang Yongzhao,Zhao Yongxiang.Study of Fe/beta zeolite in catalytic N2O decomposition[J].Industrial Catalysis,2018,26(1):36-41. |
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| Authors: | Xu Bing Gao Chunguang Wang Yongzhao Zhao Yongxiang |
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| Affiliation: | Engineering Research Center of Fine Chemicals Ministry of Education,School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,Shanxi,China |
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| Abstract: | The modified Fe/beta zeolite was prepared by liquid ion exchange method of H-beta.The Fe/beta was used in the catalytic decomposition of N2O,in which the effect of the system pH after adding HNO3 was studied.The structure and properties of the Fe/beta were characterized by N2-physical adsorption-desorption,XRD,IR,DR UV-Vis,NH3-TPD and ICP-OES.The results showed that the crystallinity,specific surface area,pore volume and Fe3+ content of the catalysts increased first and then decreased during the process of solution pH reduced. The temperature of complete decomposition of Fe/beta zeolite prepared at the pH of 2.0 whose better catalytic activity was better was obviously lower than that of the catalysts prepared at the pH of 2.6 and 1.0. |
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| Keywords: | catalytic chemistry Fe/beta liquid ion exchange method the direct decomposition of N2O |
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