ABSTRACT

Formaldehyde (HCHO), which is one of the common pollutants in indoor environment and industrial processes, can cause adverse effects on human health. The thermal catalytic oxidation technology is regarded as the most promising approach due to its easy handling and environmental friendliness. This article reviews the current status of the catalytic oxidation of HCHO over noble metal and transition metal oxide catalysts. The general feature and the reaction mechanism of the catalytic oxidation of HCHO are summarized first. Based on the discussion of the reaction mechanism, the influence of some factors (catalyst preparation process, catalyst support, promoter and morphology) on the activity of the catalyst have been addressed. The structure of the catalysts has been elucidated and correlated with the reaction mechanism as well as the catalytic performance. Finally, the perspectives for the catalytic oxidation of HCHO in future research are presented. Hopefully, this review can shed light on the design of more active catalysts for HCHO oxidation to realize their practical application.

摘要

甲醛（HCHO）是室内环境和工业过程中常见的污染物之一，会对人体健康造成不良影响。热催化氧化技术因其易于处理和环境友好而被认为是最有前途的方法。本文综述了贵金属和过渡金属氧化物催化剂催化氧化 HCHO 的现状。首先总结了HCHO催化氧化的一般特征和反应机理。在讨论反应机理的基础上，探讨了催化剂制备工艺、催化剂载体、助催化剂和形貌等因素对催化剂活性的影响。催化剂的结构已被阐明，并与反应机理和催化性能相关。最后，展望了 HCHO 催化氧化在未来研究中的前景。希望这篇综述可以阐明设计更活跃的 HCHO 氧化催化剂以实现其实际应用。