| ZSM-5型分子筛上H_2选择还原NO |
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| 引用本文： | 于青,刘正先,王忠卫,黄小文,田秀娟,刘蕾.ZSM-5型分子筛上H_2选择还原NO[J].山东科技大学学报(自然科学版),2014(1):59-63. |
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| 作者姓名： | 于青 刘正先 王忠卫 黄小文 田秀娟 刘蕾 |
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| 作者单位： | 山东科技大学材料科学与工程学院,山东青岛266590 |
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| 基金项目： | 国家自然科学基金项目（21103099）;青岛市科技计划基础研究项目（13-1-4-242-jch） |
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| 摘 要： | 采用水热法合成了微米HZSM-5分子筛(HZSM-5)和纳米HZSM-5分子筛(nano-HZSM-5),通过XRD和SEM对样品进行了表征。结果表明:所得样品为纯态的HZSM-5和nano-HZSM-5分子筛。以上述样品为载体,制备了Pd基催化剂,并用于H2选择还原NO研究。在整个测试温度范围内,Pd/HZSM-5表现出良好的催化性能,优于Pd/nano-HZSM-5。当温度高于100℃时,Pd/HZSM-5上的NO可达到完全转化。此外,Pd含量仅影响低温时(100℃)Pd/HZSM-5的催化活性。上述结果说明所制备的Pd/HZSM-5是H2选择还原NO的优良催化剂。
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| 关 键 词： | 氢气 选择还原 一氧化氮 ZSM- 分子筛 |
NO Selective Reduction by H2 over ZSM-5 Zeolites |
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| Institution: | Yu Qing, Liu Zhengxian, Wang Zhongwei, Huang Xiaowen, Tian Xiujuan, Liu I.ei (College of Materials Science and Engineering,Shandong University of Science and Technology, Qingdao, Shandong 266590, China) |
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| Abstract: | HZSM-5 and nano-HZSM-5 zeolites were successfully synthesized by hydrothermal method. XRD and SEM were used to characterize the samples. The results indicate that these samples are pure HZSM-5 and nano-HZSM-5 zeolites. With the above result, the Pd based catalysts were made and used in selective reduction of NO by H：. In the whole temperature range,Pd/HZSM-5 exhibited perfect activity,which was better than that of Pd/nano-HZSM-5. At temperatures above 100 ℃, the NO over Pd/HZSM-5 could be fully converted. Moreover, Pd content affected the catalytic activity only at temperatures below 100 ℃. All the results prove that Pd/HZSM-5 is an excellent catalyst for selective reduction of NO by H2. |
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| Keywords: | hydrogen selective reduction NO ZSM-5 molecular sieve |
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