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Redução das emissões de NOx na clinquerização pela utilização das técnicas de requeima e combustão estagiada
(Universidade Federal de Minas GeraisUFMG, 2019-03-22)
Pollutant emission issues are growing, and more strict emission controls laws are being reinforced. In this scenario, nitrogen oxide (NOx) emission abatement is presenting itself as a major challenge, as these components ...
Characterization of Co/sulfated zirconia catalysts for selective reduction of NO by methane
(Elsevier Science, 2008-10)
In this study, Co based catalysts (0.5-5 wt% Co) supported on sulfated zirconia were prepared for NO selective reduction by methane. The effect of Co loading on the catalyst structure, the catalytic activity and stability, ...
Structured catalysts containing Co, Ba and K supported on modified natural sepiolite for the abatement of diesel exhaust pollutants
(Elsevier Science Sa, 2010-03)
Natural sepiolite-supported catalysts, structured as highly porous ceramic discs were investigated for their application in diesel exhaust after treatment. Catalysts containing cobalt, potassium and barium, which are active ...
Reforestation as a novel abatement and compliance measure for ground-level ozone
High ambient ozone (O3) concentrations are a widespread and persistent problem globally. Although studies have documented the role of forests in removing O3 and one of its precursors, nitrogen dioxide (NO2), the cost ...
Potassium effect on the thermal stability and reactivity of NOx species adsorbed on Pt,Rh/La2O3 catalysts
(Elsevier Science, 2011-01)
In this paper we analyzed the effect of potassium on the thermal stability of NOx species adsorbed on lanthanum supported catalysts. Catalysts containing only noble metals (Pt and/or Rh) or noble metals and potassium were ...
Diesel soot and NOx abatement: K/La2O3 catalyst stability
(Elsevier Science, 2010-11)
Soot particles and nitrogen oxides are the main pollutants emitted by a diesel engine. In this work, the activity and the stability of the KOH/La2O3 catalyst are studied. This catalyst is able to adsorb NOx, which is a ...
Preparation and characterization of Pd-Co/sulfated zirconia catalysts for no selective reduction by methane
(Elsevier Science, 2008-03)
Palladium and cobalt bimetallic catalysts supported on sulfated zirconia (PdCo/SZ), obtained from different precursors of Pd (nitrate and acetylacetonate), were prepared to study their influence on the selective reduction ...
Catalisadores à base de ferro, vanádio e molibdênio suportados em titanatos lamelares e TiO2 comercial na aplicação da reação de NO com NH3
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2011-10-27)
The minimization of emissions of nitrogen oxides (NOx) is a subject of great interest because they cause serious environmental problems affecting human health, flora and fauna. To break down the NOx catalytic reduction of ...
Eliminación de contaminantes de gases de escape de motores diesel: estabilidad de catalizadores
(2006-12-18)
Los principales contaminantes emitidos por los motores diesel son las partículas de hollín y los óxidos de nitrógeno. En este trabajo se estudiaron catalizadores para la eliminación simultánea de ambos tipos de emisiones. ...