O_(3)/Fe^(2+)均相催化体系及其效能强化综述

Review of O_(3)/Fe^(2+) Homogeneous Catalytic System and Enhanced Effectiveness

针对O_(3)/Fe^(2+)催化氧化体系Fe^(2+)消耗量大、适用的pH范围狭窄等问题,综述了O_(3)/Fe^(2+)催化氧化体系的研究现状。分析了O_(3)/Fe^(2+)氧化反应机理和pH、Fe^(2+)投加量、O3投加量及投加方式、反应温度等因素对O_(3)/Fe^(2+)催化氧化效果的影响,以及UV辐照、H2O2、螯合剂等效能强化手段的机理和效果,并类比了羟胺(HA)强化Fenton反应的机理、应用和效果,提出利用HA构建Fe^(3+)/Fe^(2+)循环,可能是强化O_(3)/Fe^(2+)均相催化体系的一种新方法。

In view of the problems of large consumption of Fe^(2+) and narrow pH value range in O_(3)/Fe^(2+) catalytic oxidation system,research progress of O_(3)/Fe^(2+) system was reviewed.Effects of the factors on catalytic oxidation efficiency were analyzed,such as pH value,Fe^(2+) dosage,dosage and dosing method of O3,and reaction temperature.And the mechanism and effect of the enhancement methods were also analyzed,such as UV irradiation,H2O2 and chelating agent.Application effect of HA on Fenton reaction and mechanism were analyzed by analogy.It was pointed out that the use of HA to construct Fe^(3+)/Fe^(2+) cycle might be a new method for enhancing the efficiency of O_(3)/Fe^(2+) system.