1,721,004 research outputs found
Steady-state and transient reactivity study of TiO2-Supported V2O5-WO3 de-NOx catalysts: Relevance of the vanadium-tungsten interaction on the catalytic activity
No full text
Nitrous oxide adsorption on vanadia-titania and tungsta-titania catalysts for the reduction of nitrogen oxides
No full textOn the effects of dopants and additives on the state of surface vanadyl centers of vanadia-titania catalysts
No full text
Characterization and reactivity of MoO3/SiO2 catalysts in the selective catalytic oxidation of ammonia to N2
No full text
On the Morphological Properties of Tungsta-titania De-noxing Catalysts
No full textTungsta-titania samples with different W loadings up to 15 wt. % and calcined at different temperatures have been prepared and characterized by surface area measurements, mercury porosimetry, x-ray diffraction, microstructural analysis, and laser Raman spectroscopy. It has been found that W inhibits the initial sintering of TiO2 (anatase) and the anatase --> rutile transformation. The morphological and structural properties of the samples (surface area, porosity, and phase composition) have been related to the microscopic properties of the materials such as crystallite dimensions and defects concentration. A model for the sintering of TiO2 is discussed. This model is based on the diffusion of surface hydroxyls, formed upon adsorption of water on surface oxygen vacancies. A role for W is proposed in terms of stabilization of both material defects and surface hydroxyls
An Ft-ir Study of the Reaction of No With Adsorbed On the Surface of Vanadia-titania De-noxing Catalysts
No full textPotassium doping of vanadia/titania de-NOxing catalysts: surface characterisation and reactivity study
No full text- …
