Alkali metals as promoters in Co-Mn-Al mixed oxide for N2O decomposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F13%3A86088304" target="_blank" >RIV/61989100:27360/13:86088304 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27710/13:86088304

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apcata.2013.05.011" target="_blank" >http://dx.doi.org/10.1016/j.apcata.2013.05.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcata.2013.05.011" target="_blank" >10.1016/j.apcata.2013.05.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Alkali metals as promoters in Co-Mn-Al mixed oxide for N2O decomposition

Popis výsledku v původním jazyce

Alkali promoted Co4MnAlOx mixed oxide (molar ratio of alkali metal/Co = 0.037) were prepared by impregnation of calcined Co?Mn?Al hydrotalcite (molar ratio Co:Mn:Al = 4:1:1) with an aqueous solution of Li, Na, K, Rb or Cs nitrate. The catalysts were characterized by AAS, SEM/EDX, N2 physisorption, XRPD, XPS, H2-TPR, TPD of CO2 and NH3 and tested for N2O decomposition in inert gas and simulated waste gas from HNO3 production. N2O conversion over alkali promoted Co4MnAlOx mixed oxide decreased in order Cs> Rb > K > Na = Co4MnAlOx > Li in inert gas and was shifted to the lower values in the presence of typical components (NOx, O2 and H2O) of flue gas. The addition of alkali promoters to the Co4MnAlOx mixed oxide resulted in a modification of both electronic properties of active metals and acid?base function of the catalyst surface. The promotional effect of alkali metals is connected with their ionization potential, the charge transfer to the catalyst and a decrease in binding energies o

Název v anglickém jazyce

Alkali metals as promoters in Co-Mn-Al mixed oxide for N2O decomposition

Popis výsledku anglicky

Alkali promoted Co4MnAlOx mixed oxide (molar ratio of alkali metal/Co = 0.037) were prepared by impregnation of calcined Co?Mn?Al hydrotalcite (molar ratio Co:Mn:Al = 4:1:1) with an aqueous solution of Li, Na, K, Rb or Cs nitrate. The catalysts were characterized by AAS, SEM/EDX, N2 physisorption, XRPD, XPS, H2-TPR, TPD of CO2 and NH3 and tested for N2O decomposition in inert gas and simulated waste gas from HNO3 production. N2O conversion over alkali promoted Co4MnAlOx mixed oxide decreased in order Cs> Rb > K > Na = Co4MnAlOx > Li in inert gas and was shifted to the lower values in the presence of typical components (NOx, O2 and H2O) of flue gas. The addition of alkali promoters to the Co4MnAlOx mixed oxide resulted in a modification of both electronic properties of active metals and acid?base function of the catalyst surface. The promotional effect of alkali metals is connected with their ionization potential, the charge transfer to the catalyst and a decrease in binding energies o

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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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)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis A: General

ISSN

0926-860X

e-ISSN

—

Svazek periodika

462

Číslo periodika v rámci svazku

10.7.2013

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

227-235

Kód UT WoS článku

000323018700027

EID výsledku v databázi Scopus

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