| Fe2+/H2O2体系O2生成路径 |
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| 引用本文： | 赵海谦,高杏存,王忠华,高继慧.Fe2+/H2O2体系O2生成路径[J].化工学报,2016,67(6):2625-2630. |
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| 作者姓名： | 赵海谦 高杏存 王忠华 高继慧 |
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| 作者单位： | 1. 东北石油大学土木建筑工程学院, 黑龙江 大庆 163318;
2. 哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨150001 |
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| 基金项目： | 黑龙江省教育厅项目(12541093)。 |
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| 摘 要： | 掌握Fe2+/H2O2体系O2的生成路径,可为避免H2O2无效分解,开发经济高效的Fe2+/H2O2体系利用技术指明方向。采用添加自由基捕获剂的方法,探究Fe2+/H2O2体系内各种自由基对O2生成速率的影响,进而确定O2的生成路径。结果表明:Fe2+/H2O2体系内不会产生大量O2-·,O2-·不是生成O2的主要反应物质;O2-·被全部捕获后,体系中仍产生大量O2-·,但此时无O2生成,证明生成O2的反应由·OH和HO2·两种自由基直接参与。分析认为反应·OH+HO2·-H2O+O2是体系内O2生成的主要路径。控制Fe2+/H2O2体系定向生成·OH,抑制HO2·的产生,是提高Fe2+/H2O2体系中H2O2利用率的有效手段。
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| 关 键 词： | Fe2+/H2O2体系 无效分解 O2 自由 |
| 收稿时间： | 2015-12-02 |
| 修稿时间： | 2016-01-06 |
O2 generation path in Fe2+/H2O2 system |
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| ZHAO Haiqian,GAO Xingcun,WANG Zhonghua,GAO Jihui.O2 generation path in Fe2+/H2O2 system[J].Journal of Chemical Industry and Engineering(China),2016,67(6):2625-2630. |
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| Authors: | ZHAO Haiqian GAO Xingcun WANG Zhonghua GAO Jihui |
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| Affiliation: | 1. Institute of Civil Engineering & Architecture, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
2. College of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China |
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| Abstract: | It is important to understand the O2 generation path in Fe2+/H2O2 system to avoid invalid decomposition of H2O2 and to reduce the cost of pollutants degradation technology using Fe2+/H2O2 system. In this paper, radical scavengers were adopted to investigate the roles of different radicals on the generation of O2 in Fe2+/H2O2 system. The results showed that there were few O2-· in Fe2+/H2O2 system, and O2-· was not the main reagent to generate O2. After ·OH was captured, the generation rate of HO2· was still high, however, there was no O2 generation. This indicated that ·OH and HO2· took part in the reaction to generate O2 directly. ·OH+HO2·-H2O O2 is the main reaction path to generate ;O2. Controling H2O2 decomposition path towards ·OH and restraining the production of HO2· were the effective ways to increase the utilization rate of H2O2. |
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| Keywords: | Fe(Ⅱ)/H2O2 system invalid decomposition O2 radical |
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