CuO modified vanadium-based SCR catalysts for Hg0 oxidation and NO reduction

被引：24

作者：

Wang, Hongyan ^{[1
]}

Wang, Baodong ^{[1
]}

Zhou, Jiali ^{[1
]}

Li, Ge ^{[1
]}

Zhang, Daojun ^{[1
]}

Ma, Ziran ^{[1
]}

Xiong, Rihua ^{[1
]}

Sun, Qi ^{[1
]}

Xu, Wayne Qiang ^{[1
]}

机构：

[1] Natl Inst Clean & Low Carbon Energy NICE, Beijing 102209, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2019年 / 239卷

基金：

中国博士后科学基金;

关键词：

CuO; Elemental mercury; Catalytic oxidation; SCR; Incorporation model; ELEMENTAL MERCURY OXIDATION; METAL-OXIDES; REMOVAL; PERFORMANCE; DISPERSION; COMPOSITE; MECHANISM; SORBENTS; HCL; FE;

D O I：

10.1016/j.jenvman.2019.02.118

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The catalytic performance of Hg-0 oxidation over vanadium-based SCR catalysts modified by different addition amounts of CuO was investigated. All catalysts were prepared by impregnation method and characterized. The 7% Cu/VWTi exhibited high Hg-0 oxidation as well as a desired NO removal efficiency at 280-360 degrees C. The characterization revealed the enhancement of redox properties and well-dispersed active species results in the high catalytic performance after modification. The incorporation model showed that CuO in 7% Cu/VWTi was present in the monolayer dispersion, leading to the highest performance. Moreover, the effects of O-2, NO, SO2, NH3 and HCl were explored. It showed all flue gas except NH3 could promote Hg-0 oxidation. Fortunately, the inhibiting effect of NH3 could be scavenged if the catalyst is installed at the downstream of the SCR reactor. In addition, the mechanism of Hg-0 oxidation over Cu/VWTi was discussed.

引用

页码：17 / 22

页数：6

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