| 富氧条件下等离子体协同改性NaY分子筛催化分解NO_x研究 |
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| 引用本文： | 李东,唐晓龙,易红宏,马玎,高凤雨. 富氧条件下等离子体协同改性NaY分子筛催化分解NO_x研究[J]. 环境科学学报, 2015, 35(12): 4088-4094 |
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| 作者姓名： | 李东 唐晓龙 易红宏 马玎 高凤雨 |
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| 作者单位： | 北京科技大学土木与环境工程学院, 北京 100083,北京科技大学土木与环境工程学院, 北京 100083,北京科技大学土木与环境工程学院, 北京 100083,北京科技大学土木与环境工程学院, 北京 100083,北京科技大学土木与环境工程学院, 北京 100083 |
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| 基金项目： | 新世纪优秀人才支持计划(No.NECT-13-0667);中央高校基本科研业务费专项资金(No.06101047);首都蓝天行动培育专项课题(No.Z141100001014006) |
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| 摘 要： | 用不同浓度的Cu、Ce和La离子交换Na Y分子筛,对比了不同改性条件下等离子体协同分解NO_x的性能.实验结果表明:Cu是NO_x催化分解的主要活性组分,对于8%Cu-Na Y催化剂,当放电电压为10 k V,放电功率为7.6 W时,NO_x转化率可达46.3%,反应产物中没有NO_2,只有11 ppm的N_2O.Ce的加入可以有效提高催化剂催化活性,对于5%Ce-8%Cu-NaY催化剂,当放电电压为7.8 kV,功率为3.6 W时,NO_x转化率可达67.3%.La的加入同样可以使催化剂活性上升,但不同La含量催化剂的NO_x转化率相差较小.
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| 关 键 词： | 等离子体 NOx分解 NaY 富氧 |
| 收稿时间： | 2015-01-23 |
| 修稿时间： | 2015-04-07 |
NOx decomposition over modified NaY zeolite by dielectric barrier discharge plasma in the presence of excess oxygen |
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| LI Dong,TANG Xiaolong,YI Honghong,MA Ding and GAO Fengyu. NOx decomposition over modified NaY zeolite by dielectric barrier discharge plasma in the presence of excess oxygen[J]. Acta Scientiae Circumstantiae, 2015, 35(12): 4088-4094 |
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| Authors: | LI Dong TANG Xiaolong YI Honghong MA Ding GAO Fengyu |
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| Affiliation: | Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083,Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083,Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083,Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083 and Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083 |
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| Abstract: | NaYzeolite was modified by different amount of Cu, Ce and La via ion exchange. NOx removal efficiency on modified NaY zeolites in the system of dielectric barrier discharge plasma assisted catalytic decomposition with the presence of excess oxygen were investigated. Results show that Cu is the main active component for NOx decomposition. When the discharge voltage was 10 kV and the discharge power was 7.6 W, NO conversion rate on 8% Cu-NaY was 46.3%. No NO2 was detected and only 11 ppm N2O was produced. Ce can improve the catalytic activity of Cu-NaY effectively. When the discharge voltage was 7.8 kV and the discharge power was 3.6 W, NOx conversion rate on 5%Ce-8%Cu-NaY was 67.3%. La can also increase the catalytic activity, but NOx conversion rate on different amount of Lamodified Cu-NaY catalyst was very similar. |
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| Keywords: | plasma NOx decomposition NaY excess oxygen |
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