Revealing Origin of Hydrogen-Carbonate ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Revealing Origin of Hydrogen-Carbonate Species in CO Oxidation Over Pt/Al2O3: A SSITKA-IR Study
Auteur(s) :
Hatoum, Ibrahim [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Bouchoul, Nassim [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Richard, Mélissandre [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dujardin, Christophe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Bouchoul, Nassim [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Richard, Mélissandre [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dujardin, Christophe [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Topics in Catalysis
Nom court de la revue :
Top Catal
Numéro :
66
Pagination :
915–921
Éditeur :
Springer Verlag
Date de publication :
2022-11-04
ISSN :
1022-5528
Mot(s)-clé(s) en anglais :
CO oxidation
SSITKA
Operando IR spectroscopy
Hydrogen-carbonate
Mechanism
SSITKA
Operando IR spectroscopy
Hydrogen-carbonate
Mechanism
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
The catalytic oxidation of CO by O2 to form CO2 over Pt based catalysis is one of the most studied catalytic reaction leading to controversial mechanism descriptions. Steady State Isotopic Transient Kinetic Analysis (SSITKA) ...
Lire la suite >The catalytic oxidation of CO by O2 to form CO2 over Pt based catalysis is one of the most studied catalytic reaction leading to controversial mechanism descriptions. Steady State Isotopic Transient Kinetic Analysis (SSITKA) coupled with InfraRed (IR) spectroscopy is a powerful technique to study heterogeneous reaction mechanisms combining both the observation of adsorbed species on the catalyst surface and kinetic measurements. In this paper, SSITKA-IR technique was applied to study the CO oxidation reaction in presence and absence of CO2 in order to distinguish between active and spectator intermediates formed during the reaction. Linear carbonyl and bridged carbonyl type species adsorbed on metallic Pt0 were clearly identified as active intermediates at low temperature (131 °C). In contrast, the hydrogen-carbonate species formed during CO oxidation reaction were proven to be inactive species in CO2 formation but rather due to the re-adsorption of CO2 product itself on alumina surface.Lire moins >
Lire la suite >The catalytic oxidation of CO by O2 to form CO2 over Pt based catalysis is one of the most studied catalytic reaction leading to controversial mechanism descriptions. Steady State Isotopic Transient Kinetic Analysis (SSITKA) coupled with InfraRed (IR) spectroscopy is a powerful technique to study heterogeneous reaction mechanisms combining both the observation of adsorbed species on the catalyst surface and kinetic measurements. In this paper, SSITKA-IR technique was applied to study the CO oxidation reaction in presence and absence of CO2 in order to distinguish between active and spectator intermediates formed during the reaction. Linear carbonyl and bridged carbonyl type species adsorbed on metallic Pt0 were clearly identified as active intermediates at low temperature (131 °C). In contrast, the hydrogen-carbonate species formed during CO oxidation reaction were proven to be inactive species in CO2 formation but rather due to the re-adsorption of CO2 product itself on alumina surface.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Autre(s) projet(s) ou source(s) de financement :
Région Hauts de France (Grant STaRS 2019)
Centrale Lille Institute
Ministère de l’Enseignement Supérieur et de la Recherche (CPER IRENE and CPER ECRIN)
European Fund for Regional Economic Development
Centrale Lille Institute
Ministère de l’Enseignement Supérieur et de la Recherche (CPER IRENE and CPER ECRIN)
European Fund for Regional Economic Development
Établissement(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Équipe(s) de recherche :
Remédiation et matériaux catalytiques (REMCAT)
Date de dépôt :
2023-03-09T01:25:35Z
2023-03-20T14:06:57Z
2023-11-29T08:13:08Z
2023-12-08T14:45:27Z
2023-12-12T15:31:27Z
2023-03-20T14:06:57Z
2023-11-29T08:13:08Z
2023-12-08T14:45:27Z
2023-12-12T15:31:27Z
Fichiers
- Revealing origin of hydrogen-carbonate species in CO oxidation over PtAl2O3- a SSITKA-IR study.pdf
- Version finale acceptée pour publication (postprint)
- Accès libre
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