期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 439, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.129665
关键词
SCR catalyst; Water effect; Impacting mechanism; SCR reaction; Water resistance improvement
资金
- National Natural Science Foundation of China [U1810209]
Developing stable SCR catalysts for nitrogen oxides (NOx) abatement remains a challenge due to the complexity and uncertainty of actual flue gas emissions. Water vapor, present in actual flue gas, has been found to impact the de-NOx activity of SCR catalysts. This review focuses on the effects of water vapor on SCR catalysts, including promoting and inhibiting effects, as well as the mechanisms involved. The review also discusses strategies for developing water-resistant SCR catalysts.
In the field of nitrogen oxides (NOx) abatement, developing selective catalytic reduction (SCR) catalysts that can operate stably in the practical conditions remains a big challenge because of the complexity and uncertainty of actual flue gas emissions. As water vapor is unavoidable in the actual flue gas, it is indispensable to explore its effect on the performance of SCR catalysts. Many studies have proved that the effects of H2O on de-NOx activity of SCR catalysts were indeed observed during SCR reactions operated under wet conditions. Whether the effect is promotive or inhibitory depends on the reaction conditions, catalyst types and reducing agents used in SCR reaction. This review focuses on the effect of H2O on SCR catalysts and SCR reaction, including promoting effect, inhibiting effect, as well as the effecting mechanism. Besides, various strategies for developing a water-resistant SCR catalyst are also included. We hope that this work can give a more comprehensive insight into the effects of H2O on SCR catalysts and help with the rational design of water-resistant SCR catalysts for further practical application in NOx abatement field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据