Heterogeneous mercury reaction on a selective catalytic reduction (SCR) catalyst

被引：135

作者：

Eom, Yujin ^{[1
]}

Jeon, Seok Ho ^{[1
]}

Ngo, Thanh An ^{[2
]}

Kim, Jinsoo ^{[2
]}

Lee, Tai Gyu ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea

[2] Kyung Hee Univ, Dept Chem Engn, Yongin 449701, South Korea

来源：

CATALYSIS LETTERS | 2008年 / 121卷 / 3-4期

关键词：

heterogeneous mercury reaction; selective catalytic reduction; coal-fired power plant; Langmuir-Hinshelwood;

D O I：

10.1007/s10562-007-9317-0

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：

The heterogeneous mercury reaction mechanism, reactions among elemental mercury (Hg-0) and simulated flue gas across laboratory-scale selective catalytic reduction (SCR) reactor system was studied. The surface of SCR catalysts used in this study was analyzed to verify the proposed reaction pathways using transmission electron microscopy with energy dispersive X-ray analyses (TEM-EDX) and X-ray photoelectron spectroscopy (XPS). The Langmuir-Hinshelwood mechanism was proven to be most suitable explaining first-layer reaction of Hg-0 and HCl on the SCR catalyst. Once the first layer is formed, successive layers of oxidized mercury (HgCl2) are formed, making a multi-layer structure.

引用

页码：219 / 225

页数：7

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