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8222966 
Journal Article 
Adsorption and catalytic oxidation of formaldehyde by attapulgite adsorption-oxidation catalysts 
Li, L; Wang, Q; Chen, X; Han, Y; Zhao, Q 
2012 
Yes 
Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae
ISSN: 0253-2468 
32 
7 
1736-1742 
Chinese 
The attapulgite adsorption-oxidation catalysts were prepared by impregnated method with different metal oxides loaded on the acid-treated attapulgite. The optimal experimental conditions for the preparation of MnO-supported attapulgite adsorption-oxidation catalysts were achieved by the orthogonal test. With an initial formaldehyde concentration of 9.5552 mg·m -3 in indoor air, the results showed that the adsorption capacity and removal rate for formaldehyde reached up to 0.188 mg·g -1 and 98.35% in 24h using attapulgite adsorption-oxidation catalysts treated at 300°C for 4 hours with manganese nitrate content of 9% and particle sizes in the range of 40~60 mesh. The XRD and FTIR analysis suggested that formaldehyde was absorbed and catalytically oxidized by the attapulgite adsorption-oxidation catalysts. 
Adsorption; Attapulgite; Catalytic oxidation; Formaldehyde; Metal oxides