The NO x reduction mechanism by H2 under near isothermal conditions over Pt–Ba/Al2O3 Lean NO x Trap systems |
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| Authors: | Castoldi L. Nova I. Lietti L. Tronconi E. Forzatti P. |
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| Affiliation: | (1) Dipartimento Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Centro NEMAS – Nano Engineered MAterials and Surfaces, Politecnico di Milano, p.za Leonardo da Vinci, 32, 20133 Milano, Italy |
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| Abstract: | The study of the gas-phase NO reduction by H2 and of the stability/reactivity of NO x stored over Pt–Ba/Al2O3 Lean NO x Trap systems allowed to propose the occurrence of a reduction process of the stored nitrates occurring via to a Pt-catalyzed surface reaction which does not involve, as a preliminary step, the thermal decomposition of the adsorbed NO x species. |
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| Keywords: | Lean deNO x NO x reduction mechanism LNT systems Pt– Ba/Al2O3 catalyst TPR TPSR |
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