催化作用
甲醛
铈
X射线光电子能谱
选择性
摩尔比
无机化学
化学
比表面积
氧气
材料科学
核化学
化学工程
有机化学
工程类
作者
Jiamin Wu,Honghong Yi,Xiaolong Tang,Shunzheng Zhao,Jian Xu,Jingxuan Meng,Qian Li
标识
DOI:10.1016/j.matchemphys.2019.122123
摘要
The MnCo3MOx (M = Ce,La,Pr) composite catalysts were synthesized by co-precipitation method and tested for formaldehyde removal and carbon dioxide selectivity. The influence of the types of rare earth elements and molar ratio of Mn/Co/M was investigated. The addition of cerium improves the catalytic activity of MnCo3Ox. The catalyst could efficiently eliminate HCHO into CO2 and H2O when the molar ratio of Mn/Co/Ce was 1/3/7.96% HCHO conversion was achieved at ambient temperature. The prepared samples were characterized by XRD, BET, H2-TPR and XPS techniques to explain the improvement of catalytic activity. The results show that a stable solid solution can be formed between CeO2 and MnCo3Ox, and the strong interaction promotes the reaction. The addition of Ce increases the specific surface area of the catalyst and enhances the reduction of MnCo3Ox and surface active oxygen, thereby increasing the catalytic activity for removing HCHO. This study provides a reference for the purification of indoor formaldehyde.
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