Precipitated K-Promoted Co-Mn-Al Mixed Oxides for Direct NO Decomposition: Preparation and Properties

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Precipitated K-Promoted Co-Mn-Al Mixed Oxides for Direct NO Decomposition: Preparation and Properties

Popis výsledku v původním jazyce

Abstract.Recent experimental studies showed that K-promoted Co-Mn-Al mixed oxides catalysts could be effective catalysts for the direct decomposition of NO to N2 and O2, as it proceeds successfully in the temperature range 600-700 oC. However, stability of the catalyst can be influenced by stability of the promotor (K) at the applied reaction conditions. The method of catalyst preparation can affect its activity and stability. Co-precipitation of metals salts by Na salts and following impregnation of wet cake by solution of KNO3 (Bulk promotion method - BP) led to higher activity and stability of the catalyst than both impregnation of the calcined Co-Mn-Al precursor with a solution of KNO3 and calcination of corresponding metal nitrates. Disadvantage of the applied method of metal salts coprecipitation by solutions of Na compounds with subsequent impregnation of wet cake is rather complicated preparation procedure. In this contribution, intimate modification of Co- Mn-Al mixed oxides was studied using co-precipitation of a metal nitrates solution with the aqueous solution of K salts.

Název v anglickém jazyce

Precipitated K-Promoted Co-Mn-Al Mixed Oxides for Direct NO Decomposition: Preparation and Properties

Popis výsledku anglicky

Abstract.Recent experimental studies showed that K-promoted Co-Mn-Al mixed oxides catalysts could be effective catalysts for the direct decomposition of NO to N2 and O2, as it proceeds successfully in the temperature range 600-700 oC. However, stability of the catalyst can be influenced by stability of the promotor (K) at the applied reaction conditions. The method of catalyst preparation can affect its activity and stability. Co-precipitation of metals salts by Na salts and following impregnation of wet cake by solution of KNO3 (Bulk promotion method - BP) led to higher activity and stability of the catalyst than both impregnation of the calcined Co-Mn-Al precursor with a solution of KNO3 and calcination of corresponding metal nitrates. Disadvantage of the applied method of metal salts coprecipitation by solutions of Na compounds with subsequent impregnation of wet cake is rather complicated preparation procedure. In this contribution, intimate modification of Co- Mn-Al mixed oxides was studied using co-precipitation of a metal nitrates solution with the aqueous solution of K salts.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10400 - Chemical sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů