Redução catalítica seletiva de óxidos de nitrogênio sobre hematita contendo cobre

Química Nova

Hadma Sousa Ferreira²  Soraia Jesus Oliveira²  Maria Do Carmo Rangel²  Ernesto A. Urquieta-gonzález¹  Leandro Martins¹  José Luís Garcia Fierro¹  Sérgio G. Marchetti¹ 

[1] ,Universidade Federal da Bahia Instituto de Química Salvador BA ,Brasil

关键词: hematite;    copper;    nitrogen oxides;   

DOI  :  10.1590/S0100-40422007000300021

来源: SciELO

【 摘 要 】

The activity of copper-doped hematite in the SCR with propane, in the presence of oxygen, was evaluated in this work. It was found that copper sulfate led to the production of solids with different specific surface areas depending on the amount of copper. The sulfur and copper species were mainly located on the surface. The copper-containing catalysts were more active in the reduction of nitrogen oxides and less active in the propane oxidation as compared to pure hematite. This behavior was assigned to an association of both sulfur and copper species to produce new sites active for NO reduction.

【 授权许可】

CC BY-NC   
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