| Fe~(2+)/H_2O_2体系内各种自由基在氧化NO中的作用 |
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| 引用本文： | 赵海谦,高继慧,周伟,王忠华,吴少华.Fe~(2+)/H_2O_2体系内各种自由基在氧化NO中的作用[J].化工学报,2015,66(1):449-454. |
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| 作者姓名： | 赵海谦 高继慧 周伟 王忠华 吴少华 |
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| 作者单位： | 1.哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001;2.东北石油大学土木建筑工程学院, 黑龙江 大庆 163318 |
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| 基金项目： | 国家自然科学基金项目(51176043，91434134，51134015)；黑龙江省青年科学基金项目( QC2014C047)；黑龙江省教育厅项目(12541093)。@@@@supported by the National Natural Science Foundation of China，Heilongjiang Science Funds for Youths，Heilongjiang Province Department of Education Funds |
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| 摘 要： | Fe2+/H2O2体系可分解产生多种氧化性自由基,主要包括O-2·、·OH和HO2·。本文实验研究了O-2·、·OH及HO2·在Fe2+/H2O2体系氧化NO气体过程中的作用。结果表明:在本实验条件下,O-2·对NO气体的氧化作用不明显;·OH及HO2·是该体系氧化NO气体的主要活性物质,其中·OH的氧化作用更大。加快自由基的生成速率可以增强Fe2+/H2O2体系对NO气体的氧化能力,但O2的生成速率同时加快。只有少量·OH及HO2·参与NO的氧化,·OH与HO2·之间的快速反应是Fe2+/H2O2体系氧化NO过程中H2O2利用率低的主要原因。
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| 关 键 词： | Fe2+/H2O2体系 自由基 无效分解 NO |
| 收稿时间： | 2014-06-27 |
| 修稿时间： | 2014-08-26 |
Roles of varied radicals in NO oxidation by Fe2+/H2O2 system |
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| ZHAO Haiqian,GAO Jihui,ZHOU Wei,WANG Zhonghua,WU Shaohua.Roles of varied radicals in NO oxidation by Fe2+/H2O2 system[J].Journal of Chemical Industry and Engineering(China),2015,66(1):449-454. |
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| Authors: | ZHAO Haiqian GAO Jihui ZHOU Wei WANG Zhonghua WU Shaohua |
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| Affiliation: | 1.College of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;2.Institute of Civil Engineering & Architecture, Northeast Petroleum University, Daqing 163318, Heilongjiang, China |
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| Abstract: | Fe2+/H2O2 system contains a variety of oxidizing free radicals, such as O2-·,·OH and HO2·. In this paper, the behaviors of O2-·, ·OH and HO2· played in NO oxidation by Fe2+/H2O2 system were investigated experimentally. The results demonstrated that the ability oxidizing NO of O2-· was weak at the experimental conditions adopted by this paper, while ·OH and HO2· were the main active species for NO oxidation in Fe2+/H2O2 system, and the role of ·OH was more important. Acceleration of generating radical rate could not only promote the ability oxidizing NO gas of Fe2+/H2O2 system, but also accelerated O2 generation rate. Only a small amount of ·OH and HO2· participate in NO oxidation. In the process of NO oxidation by Fe2+/H2O2 system, the rapid reaction between ·OH and HO2· was the major reason of for low utilization of H2O2 (invalid decomposition). |
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| Keywords: | Fe2+/H2O2 system radical invalid decomposition NO |
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