Experimental Microkinetic Approach of De-NOx by NH3 on V2O5/WO3/TiO2 Catalysts. 6. NH3-H2O Coadsorption on TiO2-Based Solids and Competitive Temkin Model
| العنوان: | Experimental Microkinetic Approach of De-NOx by NH3 on V2O5/WO3/TiO2 Catalysts. 6. NH3-H2O Coadsorption on TiO2-Based Solids and Competitive Temkin Model |
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| المؤلفون: | Nolven Guilhaume, François Giraud, Lynda Porcheron, Sébastien Gros, Mohamed Kanniche, Daniel Bianchi, Stéphane Loridant, Christophe Geantet, Julien Couble |
| المساهمون: | Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-Catalytic and Atmospheric Reactivity for the Environment (CARE), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), IRCELYON-Catalyse Hétérogène pour la Transition Energétique (CATREN), IRCELYON-Ingéniérie, du matériau au réacteur (ING), EDF (EDF) |
| المصدر: | Journal of Physical Chemistry C Journal of Physical Chemistry C, American Chemical Society, 2018, 122 (43), pp.24634-24651. ⟨10.1021/acs.jpcc.8b05847⟩ |
| بيانات النشر: | HAL CCSD, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Chemistry, Inorganic chemistry, 02 engineering and technology, [CHIM.CATA]Chemical Sciences/Catalysis, Atmospheric temperature range, 010402 general chemistry, 021001 nanoscience & nanotechnology, Mass spectrometry, 01 natural sciences, [SDE.ES]Environmental Sciences/Environmental and Society, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Catalysis, General Energy, Adsorption, [CHIM.GENI]Chemical Sciences/Chemical engineering, Chemisorption, Selective reduction, Physical and Theoretical Chemistry, Fourier transform infrared spectroscopy, 0210 nano-technology, NOx |
| الوصف: | The present study is a part of an experimental microkinetic approach (EMA) of the selective reduction of NOx to N2 with NH3 in excess O2 on V2O5/WO3/TiO2 catalysts (NH3-SCR process). In the temperature range of interest for NH3-SCR (T ≥≈ 473 K) and for three TiO2-based solids (sulfated and sulfate-free TiO2 supports and a sulfated 0.7% V2O5/9% WO3/TiO2 catalyst), FTIR spectroscopy and volumetric measurements with a mass spectrometer are used to study the impacts of the NH3–H2O coadsorption on the coverages of (a) the molecularly adsorbed NH3 species and (b) the molecularly and dissociated H2O species on Lewis and Bronsted sites. Whatever the solid, it is shown that NH3 dominates the molecular coadsorption on the Lewis sites. However, this does not prevent the dissociative H2O chemisorption on a small amount of Lewis acidic sites, leading to an increase in the amount of OH groups. On the two sulfated solids, these OH groups increase the amount of adsorbed NH4+ species as compared to the NH3 adsorption equi... |
| اللغة: | English |
| تدمد: | 1932-7447 1932-7455 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::257c00cf2029c1d7c5b43ee6f94cf457 https://hal.archives-ouvertes.fr/hal-01927635 |
| رقم الأكسشن: | edsair.doi.dedup.....257c00cf2029c1d7c5b43ee6f94cf457 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19327447 19327455 |
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