Performance of Core-Shell Manganese Oxides/Granular Activated Carbon Composite Materials for Indoor Formaldehyde Removal

化学工业与工程

Chemcial Industry and Engineering

2015, Vol. 32

Issue (3) :74-78 DOI: 10.13353/j.issn.1004.9533.2015.03.010

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Performance of Core-Shell Manganese Oxides/Granular Activated Carbon Composite Materials for Indoor Formaldehyde Removal

Yunus Rizwangul^1,2, Li Jinge¹, Zhang Pengyi¹, Wang Mingxiao¹

1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China;
2. Xinjiang Zhongtai Chemical Company, Xinjiang 831511, China

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Abstract

To deal with indoor pollution caused by low-level formaldehyde, manganese oxides supported on granular activated carbon (MnO_x/AC) were prepared by in-situ reduction of permanganate with AC at room temperature. The composite MnO_x/AC material showed much higher capability to remove formaldehyde, about 4.5 times higher than that of uncoated granular activated carbon. Moreover, the deactivated MnO_x/AC can be self-regenerated after it was kept at room temperature for 7 h, and can be repeatedly used. The increased relative humidity would decrease the purification capability of MnO_x/AC. However, it showed stable catalytic activity for formaldehyde removal at 60 ℃.

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Keywords： formaldehyde； granular activated carbon； manganese oxide； indoor air； composite material

Received 2015-03-30;

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Yunus Rizwangul, Li Jinge, Zhang Pengyi, Wang Mingxiao.Performance of Core-Shell Manganese Oxides/Granular Activated Carbon Composite Materials for Indoor Formaldehyde Removal[J] Chemcial Industry and Engineering, 2015,V32(3): 74-78

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