锰氧化物催化分解室内甲醛的研究进展

Advances on Catalytic Oxidation of Formaldehyde by Manganese Oxide

甲醛是一种常见的室内污染物,一定浓度的甲醛会危害人类的身体健康。因此,甲醛的消除尤为重要。锰氧化物是一种深度氧化剂,催化活性高,在室温下能够较好地催化氧化甲醛,且不会产生二次有害气体,是近几年来催化降解甲醛的研究热点之一。本文对单一锰氧化物、过渡金属掺杂锰氧化物以及负载锰氧化物催化剂进行了介绍,并简述了锰氧化物的晶体、形貌、表面处理对甲醛催化效果的影响,概述了甲醛催化分解机理,并对锰氧化物催化降解甲醛的发展趋势进行了展望。

Formaldehyde is a common indoor pollutant,and long-term exposure to certain concentrations of formaldehyde has the potential to endanger human health.Therefore,it is of utmost importance to eliminate formaldehyde.Manganese oxides have seriously been considered as a kind of deep oxidant with high catalytic activity.It should be noted that manganese oxides can catalyze the oxidation of formaldehyde at room temperature without producing secondary harmful gases.Recently,manganese oxides have become a research hotspot in terms of the catalytic degradation of formaldehyde.In this paper,single manganese oxide,transition metal doped with manganese oxides,and manganese oxides supported catalyst were introduced.The influence of crystal structure,morphology,and surface treatment of manganese oxides on the catalytic performance for formaldehyde oxidation was described,and the catalytic decomposition mechanism of formaldehyde was summarized.The development trend of catalytic degradation of formaldehyde using manganese oxide was also explored.