催化作用
甲醛
甲醇
化学
活性炭
过氧乙酸
分解
X射线光电子能谱
氧化还原
拉曼光谱
碳纤维
无机化学
核化学
化学工程
过氧化氢
材料科学
有机化学
吸附
复合材料
工程类
物理
光学
复合数
作者
Ruimei Fang,Haibao Huang,Jian Ji,He Miao,Qiuyu Feng,Yanhui Zhan,Dennis Y.C. Leung
标识
DOI:10.1016/j.cej.2017.11.176
摘要
MnOx was supported on peracetic acid modified coconut shell activated carbon (MnOx/AC) via facile in-situ redox reactions and used for catalytic oxidation of HCHO which is a major indoor air pollutant. The MnOx/AC catalysts were characterized by XRD, Raman, XPS, BET and in-situ DRIFTS technologies. The prepared MnOx was δ-type structure with poor crystalline. With the addition of methanol as a reducing agent during preparation, the MnOx/AC-methanol catalyst exhibited superior catalytic activity and stability toward HCHO oxidation at room temperature. The HCHO removal efficiency was kept nearly at 100% for a reaction time of 1000 min and remained highly stable even after six repetitive cycles. The rich Mn3+ and surface oxygen groups were beneficial for the catalytic activity. The in-situ DRIFTS results showed lower accumulation and faster decomposition of intermediates on the surface of the MnOx/AC-methanol catalyst, which may account for its superior catalytic efficiency and stability.
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