Catalytic performance of Ag(x)/ZSM-5 catalysts for selective catalytic reduction of nitric oxide by methane

被引：0

作者：

Sun, Jin-Ru ^{[1
,2
]}

Wang, Ying ^{[1
]}

Ma, Qiang ^{[1
]}

Li, Bin ^{[1
]}

Zhao, Yu ^{[1
]}

Tian, Yu ^{[1
,2
]}

Wang, Hong ^{[1
]}

Chi, Yao-Ling ^{[1
]}

Li, Cui-Qing ^{[1
]}

Song, Yong-Ji ^{[1
]}

机构：

[1] College of Chemical Engineering, Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing Institute of Petrochemical Technology, Beijing,102617, China

[2] College of Environmental and Energy Engineering, Beijing University of Technology, Beijing,100124, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2020年 / 48卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ammonia - Atmospheric pressure - Catalyst activity - Impregnation - Methane - Molecular sieves - Nitric oxide - Nitrogen removal - Particle size - Physicochemical properties - Reduction - Silver;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ag(x)/ZSM-5 (x=3, 6, 9) catalysts for selective catalytic reduction of nitric oxide by methane (CH4-SCR) were prepared by impregnation method. The physicochemical properties of the catalysts were characterized by XRD, SEM, NH3-TPD, Py-FTIR, XPS and NO-TPD. The catalytic performance for selective catalytic reduction of nitric oxide by methane was evaluated in a fixed-bed micro-reactor under atmospheric pressure and the influence of Ag loading were investigated.The results show that the impregnation of Ag has changed the acidity and amount of acid of the catalyst and improved the adsorption and desorption performance of NO on ZSM-5 molecular sieve. With the increase of Ag loading, Ag particle size increases and results in higher methane activation as well as the denitration activity of CH4-SCR over Ag(x)/ZSM-5 catalyst. Ag(9)/ZSM-5 has better denitration activity and the NO conversion is 41.87% at 350 ℃. © 2020, Science Press. All right reserved.

引用

页码：197 / 204

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