Catalytic ozonation of p-nitrophenol over mesoporous Mn-Co-Fe oxide

被引：58
|
作者：
Ma, Zichuan [1 ]
Zhu, Lin [1 ]
Lu, Xiaoyang [1 ]
Xing, Shengtao [1 ]
Wu, Yinsu [1 ]
Gao, Yuanzhe [1 ]
机构：
[1] Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 133卷
基金：
中国国家自然科学基金;
关键词：
p-Nitrophenol; Composite oxide; Catalytic ozonation; Surface property; WATER-TREATMENT; HYDROGEN-PEROXIDE; AQUEOUS-SOLUTION; ACID; OXIDATION; OZONE; DEGRADATION; NANOCOMPOSITES; DECOMPOSITION; NANOPARTICLES;
D O I：
10.1016/j.seppur.2014.07.011
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Mesoporous composite metal oxides were prepared by an oxidation-precipitation method. The characterization studies indicated that the structure and surface property of the products could be controlled through simple manipulation of precursor composition. The activity of the synthesized catalysts for ozonation of p-nitrophenol (PNP) in aqueous solution was investigated. It was found that the negatively charged surface enhanced the adsorption and decomposition of ozone, but inhibited the adsorption of organic intermediates. This heterogeneous catalytic ozonation process should mainly follow a mechanism of surface reactions involving adsorbed ozone and organic molecules. Mn-Co-Fe exhibited the highest catalytic activity and stability for the mineralization of PNP due to its proper adsorption capacities for ozone and organic intermediates, which facilitated the surface reactions. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：357 / 364
页数：8
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