多相芬顿催化水处理技术与原理

发布时间：2018-01-25 02:06

本文关键词： 多相芬顿催化水处理双反应中心过氧化氢　出处：《化学进展》2017年09期 　论文类型：期刊论文

【摘要】：多相芬顿催化水处理技术是一种有效的降解水中有机污染物的方法。相比均相芬顿反应,它具有可循环利用、pH响应范围宽、不产生铁泥以及易于固液分离等优点。本文主要综述了经典芬顿反应机制、多相芬顿催化反应机制以及基于传统机理所发展起来的多相芬顿/类芬顿催化剂。总结了现存多相芬顿催化体系所存在的中性条件下活性低、催化剂稳定性差以及过氧化氢利用率低等瓶颈问题。重点介绍了针对这些问题所开发出的新型多相芬顿催化体系,包括单一铜反应中心催化体系和金属双反应中心催化体系。我们认为双反应中心催化体系实际上已经突破了经典芬顿反应概念,从电子分布极化理论出发,创造性地构建出具有电子高密度中心和低密度中心,实现了过氧化氢高效选择性还原和污染物高效氧化降解,解决了经典芬顿反应在实际水处理中的技术瓶颈问题。
[Abstract]:Multiphase Fenton catalytic water treatment is an effective method for the degradation of organic pollutants in water. Compared with homogeneous Fenton reaction, it has a wide range of pH response. In this paper, the classical Fenton reaction mechanism is reviewed. The mechanism of multiphase Fenton catalytic reaction and the development of multiphase Fenton / Fenton-like catalyst based on traditional mechanism were summarized. The low activity of the existing multiphase Fenton catalyst system under neutral conditions was summarized. The bottleneck problems such as poor stability of catalyst and low utilization rate of hydrogen peroxide were discussed. A new multiphase Fenton catalytic system was developed to solve these problems. We believe that the two-reaction center catalytic system has actually broken through the classical Fenton reaction concept, starting from the electron distribution polarization theory. The electron high density centers and low density centers were constructed creatively to realize the high efficiency selective reduction of hydrogen peroxide and the high efficiency oxidation degradation of pollutants. The technical bottleneck of classical Fenton reaction in actual water treatment is solved.
【作者单位】：广州大学环境科学与工程学院珠江三角洲水质安全与保护教育部重点实验室;中国科学院生态环境研究中心中国科学院饮用水科学与技术重点实验室;中国科学院大学;
【基金】：国家自然科学基金重点基金项目(No.51538013) 国家重点研发计划(No.2016YFA0203200)资助~~
【分类号】：O643.3;TQ085.4
【正文快照】： induced by lattice oxygen6.3 Dual-center heterogeneous Fenton-like systeminduced by surface organic ligand7 Conclusion and outlook1引言当今世界,随着人口的增长、经济的发展以及工业进程的推进,越来越多的新型污染物出现,包括医药、农药、氯酚以及内分泌干扰素等物

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