Kinetic investigation of the NO reduction by H2 over noble metal based catalysts
| Autor: | Pascal Granger, Stan Pietrzyk, Fabien Dhainaut |
|---|---|
| Přispěvatelé: | Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Laboratoire de catalyse de Lille - UMR 8010 (LCL), Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Reaction mechanism
Hydrogen Chemistry Inorganic chemistry Kinetics chemistry.chemical_element 02 engineering and technology General Chemistry Thermal treatment [CHIM.CATA]Chemical Sciences/Catalysis engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis 01 natural sciences Catalysis 0104 chemical sciences engineering Noble metal 0210 nano-technology ComputingMilieux_MISCELLANEOUS Palladium |
| Zdroj: | International Symposium on Air Pollution Abatement Catalysis International Symposium on Air Pollution Abatement Catalysis, Sep 2005, cracovie, Poland Book of extended abstract of APAC5 “International Symposium on Air Pollution Abatement Catalysis” Book of extended abstract of APAC5 “International Symposium on Air Pollution Abatement Catalysis”, 2005, pp.257 Catalysis Today Catalysis Today, Elsevier, 2007, 119, pp.94-97. ⟨10.1016/j.cattod.2006.08.016⟩ Catalysis Today, 2007, 119, pp.94-97. ⟨10.1016/j.cattod.2006.08.016⟩ |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2006.08.016⟩ |
| Popis: | This paper reports a kinetic investigation of the overall reduction of NO by H 2 over supported palladium based catalysts. Drastic changes in the kinetic features of Pd were found after deposition on reducible LaCoO 3 materials in comparison with alumina. Peculiar interactions between palladium and LaCoO 3 build up during a pre-activation thermal treatment in H 2 at high temperature which completely modify the kinetic behaviour of Pd. In such a case, a classical Langmuir-Hinshelwood mechanism, previously proposed on Pd/Al 2 O 3 , is unable to model steady-state rate measurements on pre-reduced Pd/LaCoO 3 . A bi-functional mechanism involving anionic vacancies at the vicinity of palladium particles leads to a better agreement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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