甲醛催化氧化反应机理的研究进展

Research progress in the mechanism of catalytic oxidation of formaldehyde

摘要:

催化氧化技术具有环境友好、节省能源、操作简单等优点，在治理室内甲醛污染方面显示出非常有潜力的应用前景。本文综述了近年来甲醛催化氧化反应机理的研究进展，阐述了在甲醛催化氧化过程中，氧的活化、可能产生的反应中间体以及反应路径。重点介绍了贵金属催化剂（Au、Pt、Pd 和Ag）和过渡金属（Mn、Co和Ce等）氧化物催化剂在甲醛氧化反应过程中，不同金属种类、载体性质和添加剂等对反应机理的影响。介绍了已经商业化的除甲醛产品所采用的反应机理。最后，指出了甲醛催化氧化反应机理存在的问题并对其未来研究发展方向进行了展望。

Abstract:

catalytic oxidation of formaldehyde (HCHO) has been considered as one of the most promising approaches because this process is environmentally friendly, energy-saving, simple operation and so on. In this paper, the active oxygen species, the possible intermediates and the reaction paths in the catalytic oxidation of HCHO have been summarized. And the main factors that influence the reaction mechanisms of catalytic HCHO oxidation over the noble metal catalysts (such as Au, Pt, Pd and Ag) and transition metal oxides (such as Mn, Co and Ce) have been reviewed in terms of the different metal species, carrier properties and additives. The reaction mechanism of commercial formaldehyde removal products was introduced. At last, the existing problems in the mechanism of catalytic oxidation of formaldehyde and the opportunities for future research were prospected.