The decisive role of the distribution of Al in the framework of beta zeolites on the structure and activity of Co ion species in propane-SCR-NOx in the presence of water vapour

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F10%3A00357798" target="_blank" >RIV/61388955:_____/10:00357798 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The decisive role of the distribution of Al in the framework of beta zeolites on the structure and activity of Co ion species in propane-SCR-NOx in the presence of water vapour

Popis výsledku v původním jazyce

The role of the distribution of aluminium in the framework of beta zeolites in the formation of various types of counter Co species of different activity in C3H8-SCR-NO in the absence/presence of 10% water vapour was investigated. Different concentrations of Al atoms in the Al-O-(Si-O)(2)-Al sequences in one ring (Al pairs) and isolated Al atoms in Al-O-(Si-O)(n>2)-Al sequences located in two framework rings of parent BEA* zeolites were obtained by variation of the zeolite synthesis and by post-synthesis dealumination. Al atoms in the framework and their distribution were characterized by the combination of Si-29 MAS NMR of the parent BEA* zeolites and UV-Vis spectroscopy of the maximum-Co(II)-loaded BEA*. The concentration of Al pairs corresponded tothe concentration of bare Co(II) ions in dehydrated maximum exchanged-Co(II)-BEA* calculated from the Vis spectra.

Název v anglickém jazyce

The decisive role of the distribution of Al in the framework of beta zeolites on the structure and activity of Co ion species in propane-SCR-NOx in the presence of water vapour

Popis výsledku anglicky

The role of the distribution of aluminium in the framework of beta zeolites in the formation of various types of counter Co species of different activity in C3H8-SCR-NO in the absence/presence of 10% water vapour was investigated. Different concentrations of Al atoms in the Al-O-(Si-O)(2)-Al sequences in one ring (Al pairs) and isolated Al atoms in Al-O-(Si-O)(n>2)-Al sequences located in two framework rings of parent BEA* zeolites were obtained by variation of the zeolite synthesis and by post-synthesis dealumination. Al atoms in the framework and their distribution were characterized by the combination of Si-29 MAS NMR of the parent BEA* zeolites and UV-Vis spectroscopy of the maximum-Co(II)-loaded BEA*. The concentration of Al pairs corresponded tothe concentration of bare Co(II) ions in dehydrated maximum exchanged-Co(II)-BEA* calculated from the Vis spectra.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

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>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Catalysis

ISSN

0021-9517

e-ISSN

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Svazek periodika

272

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000279090500006

EID výsledku v databázi Scopus

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