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Listar por palabra clave "Selective catalytic reduction (SCR)"

Mostrando ítems 1-10 de 10

Advances and perspectives from a decade of collaborative efforts on zeolites for selective catalytic reduction of NOx

Vennestrøm, Peter N.R.; Thogersen, Joakim R.; Gabrielsson, Pär L. T.; van Tendeloo, Leen; Schütze, Frank W.; Moliner Marin, Manuel (Elsevier, 2022-12)

[EN] Nitrogen oxides (NOx) is a major air pollutant and its release is regulated by increasingly stringent legislation. Selective catalytic reduction using ammonia as a reductant (NH3-SCR) is the most widely applied method ...
Application of dynamic optimization and data fusion techniques for SCR control

Nakaema Aronis, André (Universitat Politècnica de València, 2020-12-19)

[ES] Los sistemas de postratamiento SCR son la solución más extendida para la reducción de emisiones de NOx en motores Diesel de automoción, pues permiten reducciones en las emisiones de NOx de hasta el 95%. En los últimos ...
Characterization and NH3-SCR reactivity of Cu-Fe-ZSM-5 catalysts prepared by solid state ion exchange: The metal exchange order effect

Jouini, Houda; Mejri, Imène; Petitto, Carolina; Martinez-Ortigosa, Joaquin; Vidal Moya, José Alejandro; Mhamdi, Mourad; Blasco Lanzuela, Teresa; Delahay, Gerard (Elsevier, 2018-04)

[EN] The selective catalytic reduction (SCR) of NO with NH3 in the presence of O-2 and H2O over a series of Fe and/or Cu-containing ZSM-5 catalysts prepared by solid state ion exchange (SSIE) was investigated. A wide number ...
Control and Diagnosis of a SCR-ASC After-Treatment System for NOx and NH3 Emission Reduction Under Real Driving Conditions and Potential System Failure

Nakaema Aronis, André (Universitat Politècnica de València, 2023-03-10)

[ES] Para cumplir los límites de emisiones impuestos por los gobiernos y reducir el impacto negativo en el medio ambiente, el uso de sistemas de postratamiento (ATS) se ha convertido en algo esencial para los motores de ...
Deactivation and regeneration studies on Pd-containing medium pore zeolites as passive NOx adsorbers (PNAs) in cold-start applications

Bello-Jurado, Estefanía; Margarit Benavent, Vicente Juan; Gallego-Sánchez, Eva María; Schuetze, Frank; Hengst, Christoph; Corma Canós, Avelino; Moliner Marin, Manuel (Elsevier, 2020-08-01)

[EN] Two Pd-containing medium pore zeolite frameworks, MFI and MWW, have been evaluated as passive NOx adsorbers (PNAs) in automotive applications. The NOx adsorption/desorption behavior of Pd-containing standard ZSM-5 and ...
Direct synthesis design of Cu-SAPO-18, a very efficient catalyst for the SCR of NOx

Martínez Franco, Raquel; Moliner Marin, Manuel; Corma Canós, Avelino (Elsevier, 2014-11)

The combination of Cu(II) triethylenetetramine and N,N-dimethyl-3,5-dimethylpiperidinium as structure directing agents allowed the direct preparation of highly active and hydrothermally stable Cu-SAPO-18 for the selective ...
Modelling and analysis of conversion efficiency in flow-through catalysts for lean-burn combustion engines

Ruiz Lucas, María José (Universitat Politècnica de València, 2023-06-09)

[ES] La preocupación mundial por el cambio climático y la calidad del aire se refleja en normativas para la regulación de emisiones en el sector del transporte cada vez más estrictas, situando el desarrollo de sistemas ...
NH3-SCR catalysts for heavy-duty diesel vehicles: Preparation of CHA-type zeolites with low-cost templates

Bello-Jurado, Estefanía; Ferri-Vicedo, Pau; Nero, Mathias; Willhammar, Tom; Millet Roig, Isabel; Schütze, Frank W.; van Tendeloo, Leen; Vennestrøm, Peter N.R.; Boronat Zaragoza, Mercedes; Corma Canós, Avelino; Moliner Marin, Manuel (Elsevier, 2022-04)

[EN] Computer-assistance allows selecting the most adequate low-cost organic structure directing agents (OSDAs) for the crystallization of Al-rich CHA-type zeolites. The host-guest stabilization energies of tetraethylammonium ...
Rational direct synthesis methodology of very active and hydrothermally stable Cu-SAPO-34 molecular sieves for the SCR of NOx

Martínez Franco, Raquel; Moliner Marin, Manuel; Franch Martí, Cristina; Kustov, Arkady; Corma Canós, Avelino (Elsevier, 2012-10-30)

A one-pot direct synthesis of Cu-SAPO-34 has been achieved that allows more than 90% yield in the material synthesis. By this method it is easy to control the Cu-loading in the Cu-SAPO-34. It is presented that a maximum ...
Study of the influence of static mixers of evaporation and distribution of injected Urea in SCR systems

Portillo Alcón, Alejandro del (Universitat Politècnica de València, 2019-11-18)

[EN] Nitrogen oxides are an important pollutant in industrialized countries. A widely used technology to reduce NOx emissions is Selective Catalytic Reduction (SCR) with ammonia as a reducing agent. SCR has been ...