1,721,141 research outputs found
Characterisation by vibrational and electronic spectroscopies
No full textThe EUROCAT SCR catalyst has been characterised by IR spectroscopic methods (transmission/absorption and diffuse reflectance techniques) by investigating its spectrum after different outgassing treatments, and the spectra of the surface species arising from adsorption of water (surface hydroxyl, groups), carbon monoxide, ammonia, pyridine, nitrogen monoxide, trimethyl berate and NO + NH3 coadsorptions. Additionally, Raman spectra and DR UV-Vis spectra have been reported after different outgassing treatments. The presence of Lewis and Bronsted acid sites has been discussed, as well as the evidence of different electronic states. A picture for the surface structure of the catalyst has been obtained. This picture is not significantly modified after extensive use of the catalyst in an SCR reactor for denitrifaction of flue gases from an incineration plant. (C) 2000 Elsevier Science B.V. All rights reserved
Structural characterization of surface species and surface sites by conventional optical spectroscopies (IR, R, UV-Vis-Nir)
No full textAdsorbate-adsorbate interactions in mixed CO-NO overlayers on NiO(100): an IR investigation
No full textIR investigation of CO adsorption on thermally reduced silica supported molybdenum catalyst
No full textNovel dimeric species produced by CO interaction with surface F-type centers on Mg-doped MgO. An IR study
No full textThermodynamic characterization of the adsorption of NO at the (100) face of NiO microcrystals
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The morphology of TiO2 microcrystals and their adsorptive properties toward CO: a HRTEM and IR study
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