Normal-temperature high-effective formaldehyde catalytic-oxidizing catalyst, preparation method, and application thereof

A high-effective catalyst used for removing indoor formaldehyde at normal temperature includes a carrier, a noble active component, and an additive. The carrier is a mesoporous oxide including at least one of Al2O3, TiO2, SiO2, cerium oxide, cobalt oxide and manganese oxide; the active component includes a less amount of at least one of noble metals Pd, Pt, Au and Ag; the additive is at least one of Na, K, Fe, Co, Ce and Ni. The catalyst can completely convert the formaldehyde into CO2 and H2O at normal temperature under relative humidity of 50-90%. The catalyst has high catalytic-oxidizing activity and strong anti-moisture capability and is suitable for removal of the formaldehyde in a sealed or a semi-sealed space. 种常温条件下用于室内甲醛净化的高效催化剂，所述催化剂包括载体、贵金属活性组分以及助剂。催化剂的载体为介孔氧化物包括三氧化二铝、二氧化钛、二氧化硅、氧化铈、氧化钴、氧化锰中至少种；活性组分为少量的贵金属Pd、Pt、Au、Ag中的至少种；助剂为Na、K、Fe、Co、Ce、Ni中的至少种；本发明的催化剂在常温，相对湿度为50%~90%条件下可以将甲醛完全转化为二氧化碳和水；本发明的催化剂具有催化氧化活性高、抗湿能力强等特点，适用于封闭、半封闭空间甲醛污染物的净化。