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

Abstract

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.

Description

technical field [0001] The invention belongs to the fields of catalyst materials, environmental catalysis and environmental protection, and in particular relates to a catalyst for catalytic oxidation of formaldehyde at normal temperature, a preparation method and an application. Background technique [0002] Formaldehyde is a typical volatile organic compound and also a carcinogenic compound. Long-term exposure to formaldehyde will increase the chance of suffering from special cancers and have a serious impact on people's health. Indoor formaldehyde mainly comes from adhesives, paints, paints, etc. in decorative materials. The release cycle of formaldehyde is generally 5 to 15 years. Therefore, the development of efficient formaldehyde purification materials has important application value. [0003] At present, the methods of purifying formaldehyde mainly include ventilation method, physical adsorption method, ozonation method, plasma technology, plant absorption method, ph...

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Problems solved by technology

However, the influence of air humidity on the performance of the catalyst was not investigated in the performance evaluation of the above-mentioned catalysts.