Selective catalytic oxidation of ammonia to nitrogen over CuO/CNTs: The promoting effect of the defects of CNTs on the catalytic activity and selectivity

被引：91

作者：

Song, Shaoqing ^{[1
]}

Jiang, Shujuan ^{[1
]}

机构：

[1] E China Inst Technol, Sch Chem Biol & Mat, Nanchang 330013, Jiangxi, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2012年 / 117卷

基金：

中国国家自然科学基金;

关键词：

CuO/CNTs; Ammonia oxidation; N-2; selectivity; Defects; WALLED CARBON NANOTUBES; LOW-TEMPERATURE; NOBLE-METAL; HYDROXYLATION; PERFORMANCE; BENZENE; PHENOL; PD; FE-ZSM-5; COPPER;

D O I：

10.1016/j.apcatb.2012.01.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

CuO/CNTs were prepared as catalysts for the selective catalytic oxidation of ammonia and demonstrated high catalytic activity and N-2 selectivity. The study results showed that the surface defects of carbon nanotubes (CNTs) could not only activate CuO, but also promote the electron transfer in the catalysis. Thus, along with increasing the defect density of the CNTs, the temperature for the complete ammonia oxidation could be decreased from 235 degrees C to 189 degrees C and the corresponding N-2 selectivity increased from 93.8% to 98.7%. Moreover, there was no apparent decrease in the catalytic activity at prolonged reaction time, indicating CuO/CNT catalysts are promising for the selective catalytic oxidation of ammonia. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：346 / 350

页数：5

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