Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H<sub>2</sub>O<sub>2</sub> system during NO oxidation process

ZHAO Haiqian; LIU Chenghao; ZHOU Wei; WANG Zhonghua; QI Hanbing; GAO Jihui

doi:10.11949/j.issn.0438-1157.20171274

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Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H₂O₂ system during NO oxidation process

更新时间：2025-12-10

- Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H₂O₂ system during NO oxidation process
- CIESC Journal Issue 5, Pages: 2250-2254(2018)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171274
  CLC： 643
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
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ZHAO Haiqian, LIU Chenghao, ZHOU Wei, et al. Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H₂O₂ system during NO oxidation process[J]. CIESC Journal, 2018, (5): 2250-2254. DOI: 10.11949/j.issn.0438-1157.20171274.
DOI：

ZHAO Haiqian, LIU Chenghao, ZHOU Wei, et al. Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H₂O₂ system during NO oxidation process[J]. CIESC Journal, 2018, (5): 2250-2254. DOI: 10.11949/j.issn.0438-1157.20171274. DOI：

摘要

H2O2利用率低是Fe （Ⅱ）/H2O2氧化体系应用的瓶颈，自由基无效消耗是H2O2利用率低的主要原因之一。本文以烟气中NO氧化为技术背景，实验研究了Fe （Ⅱ）/H2O2体系内H2O2及各种自由基在氧化NO中的作用及自由基无效消耗路径。结果表明：H2O2直接氧化NO能力很弱；虽然·OH及HO2·均可以氧化NO，但·OH的氧化作用大于HO2·。氧化NO同时，绝大多数·OH及HO2·通过两者的快速复合反应而无效消耗，严重影响了H2O2利用率。因此，使用Fe （Ⅱ）/H2O2体系降解污染物过程中，应尽量避免·OH及HO2·两种自由基同时大量存在。

Abstract

Low utilization of H2O2 is a bottleneck in the application of Fe(Ⅱ)/H2O2 oxidation system. Free radicals useless consumption is one of the main reasons for the low utilization of H2O2. In this paper

the effect of H2O2 and various free radicals on oxidation of NO and the useless consumption pathways of the free radicals in Fe(Ⅱ)/H2O2 system were studied based on NO oxidation background. The results showed that the ability of directly oxidize NO by H2O2 was very weak. Although both ·OH and HO2· had the ability to oxidize NO

the oxidation ability of ·OH was greater than that of HO2·. In the process of NO oxidation

the vast majority of ·OH and HO2· was uselessly consumed through the rapid recombination of these two kinds of radicals

which seriously affected the utilization of H2O2. Therefore

simultaneous presence of both ·OH and HO2· radicals should be avoided when Fe(Ⅱ)/H2O2 system was adopted to degrade the pollutants.

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Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H2O2 system during NO oxidation process

DOI：10.11949/j.issn.0438-1157.20171274

摘要

Abstract

关键词

Keywords

references

Main active substances and useless consumption path of free radicals in Fe (Ⅱ)/H₂O₂ system during NO oxidation process