Abstract:

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.

Author affiliation: Sousa Ferreira, Hadma. Universidade Federal da Bahia. Instituto de Química; Brasil

Author affiliation: Oliveira, Soraia Jesus. Universidade Federal da Bahia. Instituto de Química; Brasil

Author affiliation: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química; Brasil

Author affiliation: Urquieta González, Ernesto A.. Universidade Federal de São Carlos. Departamento de Engenharia Química; Brasil

Author affiliation: Martins, Leandro. Universidade Federal de São Carlos. Departamento de Engenharia Química; Brasil

Author affiliation: Garcia Fierro, Jose Luis. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España

Author affiliation: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina