Removal Of Industrial Formaldehyde By Corrugated Glass Fiber Loaded Manganese Oxide At High Temperature

With the further development of human industry,volatile organic compounds（VOCs）gradually become a very serious pollution source,formaldehyde into the environment will cause serious damage to the environment.Thermal catalytic oxidation is the main method to deal with formaldehyde in industry.Manganese dioxide（MnO₂）,as a catalyst with good catalytic performance,is the focus of catalyst research to further optimize the catalytic performance of manganese dioxide（MnO₂）supported by metal oxides.The traditional alumina（Al₂O₃）carrier has the problem of high density,low load and insufficient catalytic effect,while the corrugated glass fiber（GFS）as a lightweight thermal catalyst carrier has the characteristics of light weight and large specific surface area.Therefore,how to improve the catalytic capacity and cycling capacity of MnO₂and GFS,so that it can adapt to the complex environment in the exhaust gas tower and complete degradation of formaldehyde has important research value and practical significance.In this paper,formaldehyde,a typical VOCs pollutant,was used as the main source of degradation,and MnO₂based corrugated glass fiber composite was prepared by impregnation and in situ synthesis,which enhanced the catalytic oxidation performance of MnO₂in the simulated exhaust gas tower environment.Study on thermal catalysis of formaldehyde with corrugated Glass Fiber supported Cu-Mn oxide catalyst.The Cu O-MnO₂/GFS catalyst was prepared by impregnation and lifting method using n-butanol,potassium permanganate and copper nitrate,and the surface was coated with spherical manganese dioxide and copper oxide particles.The composite material had a large unit hydrogen consumption.In the catalytic oxidation test of formaldehyde,it was found that 0.3 Cu O-MnO₂/GFS had the best catalytic effect.And in the stability test,the catalytic performance is stable,manganese and copper elements in the catalytic process and reactive oxygen molecules,resulting in the change of valence state.Study on thermal catalysis of formaldehyde with corrugated Glass Fiber supported Cobalt manganese oxide catalyst.Co₂O_x-MnO₂/GFS catalyst was prepared by using n-butanol,potassium permanganate and cobalt nitrate.Spherical manganese dioxide and cobalt oxide particles were uniformly loaded on the corrugated surface.Among them,0.1Co₂O_x-MnO₂/GFS had the best catalytic oxidation performance of formaldehyde,and its catalytic performance did not change significantly in the cycle test.This is mainly due to the fact that the composites themselves are rich in lattice oxygen and can adsorb oxygen molecules from the air during the catalytic process.Thus,the catalytic oxidation of formaldehyde was promoted.