Oxidation of Formaldehyde over Birnessite-Type Manganese Oxides at Room-Temperature

Abstract:

A series of manganese oxides (Me-OL-1s, Me: Mg, Fe, Ni and Cu) were synthesized by static hydrothermal and ion-exchange method. The as-prepared samples were characterized by means of X-ray diffraction (XRD), Raman spectroscopy (Raman) and Scanning electron microscope (SEM). The catalytic activity of the Me-OL-1 samples for the formaldehyde degradation was investigated at room temperature. The synthetic Me-OL-1s belong to birnessite-type manganese oxides. All the Me-OL-1 catalysts show the activity for the catalytic oxidation of formaldehyde at room temperature and exhibit the activity order of Fe-OL-1 > Ni-OL-1 > Cu-OL-1 > Mg-OL-1. The removal rates of formaldehyde are increased with increasing contact time.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 547-550
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.547
• Online since: April 2016
• Authors: Li Li Feng, Jie Wang, Xiao Han, Hai Bo Wang
• Keywords: Birnessite-Type Manganese Oxides, Catalytic Oxidation, Formaldehyde Degradation

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