| 介质阻挡放电中OH自由基对甲醛脱除的影响 |
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| 引用本文： | 史恒超,王文春,杨德正,霍岩,贾莉.介质阻挡放电中OH自由基对甲醛脱除的影响[J].物理化学学报,2011,27(8):1979-1984. |
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| 作者姓名： | 史恒超 王文春 杨德正 霍岩 贾莉 |
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| 作者单位： | Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China |
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| 基金项目： | 国家自然科学基金(50977006,10575019); 辽宁省教育厅重点实验室项目(2009S017); 中央高校基本科研业务费专项资金(DUT10JR03)资助项目~~ |
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| 摘 要： | 对管线式介质阻挡放电中的甲醛脱除进行了实验研究, 测量了介质阻挡放电产生的OH (A2Σ→X 2Π, 0-0)自由基发射光谱. 研究了在一个大气压下不同放电峰值电压、放电频率、添加氩气和氧气时甲醛脱除率与OH自由基发射光谱强度的变化关系. 实验结果表明: 在氮气含甲醛体系中, 提高放电峰值电压、放电频率和增大氩气含量时, 甲醛脱除率随OH (A2Σ→X 2Π, 0-0)自由基发射光谱强度的增强而提高; 当在氮气含甲醛体系中增大氧气含量时, 甲醛脱除率随OH (A2Σ→X 2Π, 0-0)自由基发射光谱强度的减弱而降低. 在11.5 kV放电峰值电压和9 kHz放电频率下, 氮气含甲醛体系中甲醛脱除率达93.8%.
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| 关 键 词： | 介质阻挡放电 甲醛脱除 OH自由基 发射光谱 大气压 |
| 收稿时间： | 2011-01-26 |
| 修稿时间： | 2011-06-08 |
Effect of OH Radicals on Formaldehyde Removal in Dielectric Barrier Discharge |
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| SHI Heng-Chao,WANG Wen-Chun,YANG De-Zheng,HUO Yan,JIA Li.Effect of OH Radicals on Formaldehyde Removal in Dielectric Barrier Discharge[J].Acta Physico-Chimica Sinica,2011,27(8):1979-1984. |
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| Authors: | SHI Heng-Chao WANG Wen-Chun YANG De-Zheng HUO Yan JIA Li |
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| Institution: | Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China |
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| Abstract: | The removal of formaldehyde by dielectric barrier discharge in a coaxial cylindrical reactor has been studied at atmospheric pressure.The emission spectra of OH(A2Σ→X 2Π,0-0) emitted from the dielectric barrier discharge have been successfully recorded.The relationship between the removal efficiency of formaldehyde and the emission intensity of OH(A2Σ→X 2Π,0-0) has been investigated at different applied voltages,driving frequencies,concentrations of argon and oxygen.We find that the removal efficiency of HCHO increases when the emission intensity of OH(A2Σ→X 2Π,0-0) increases with rising applied voltage,driving frequency,and concentration of argon.However,the removal efficiency of HCHO decreases when the emission intensity of OH(A2Σ→X 2Π,0-0) decreases with an increase in the concentration of oxygen.The removal efficiency of HCHO is 93.8% in N2+HCHO mixed gas at 11.5 kV applied voltage and 9 kHz driving frequency. |
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| Keywords: | Dielectric barrier discharge Formaldehyde removal OH radical Emission spectrum Atmospheric pressure |
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