Comparison on the Performance of α-Fe2O3 and γ-Fe2O3 for Selective Catalytic Reduction of Nitrogen Oxides with Ammonia

被引：129

作者：

Liu, Caixia ^{[1
]}

Yang, Shijian ^{[2
]}

Ma, Lei ^{[1
,3
]}

Peng, Yue ^{[1
]}

Hamidreza, Arandiyan ^{[1
]}

Chang, Huazhen ^{[1
]}

Li, Junhua ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Nanjing 210094, Jiangsu, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

CATALYSIS LETTERS | 2013年 / 143卷 / 07期

关键词：

Selective catalytic reduction (SCR); NOx abatement; gamma-Fe2O3; alpha-Fe2O3; NITRIC-OXIDE; IR-SPECTROSCOPY; NO; NH3; ADSORPTION; OXIDATION; MANGANESE; AL2O3; NO(X); DRIFT;

D O I：

10.1007/s10562-013-1017-3

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：

gamma-Fe2O3 catalyst showed higher catalytic activity than alpha-Fe2O3 in 150-300 A degrees C. Both NH3 and NO (x) species adsorbed and reacted easily on gamma-Fe2O3. However, NH3 adsorbed on alpha-Fe2O3 and then reacted with gaseous NO (x) . Gaseous NO (x) was more easily adsorbed on alpha-Fe2O3 than gaseous NH3, consequently, stable nitrates formed and blocked the active sites, which affected the SCR reaction badly.

引用

页码：697 / 704

页数：8

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