Acid and redox activity of template-free Al-rich H-BEA* and Fe-BEA* zeolites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00432631" target="_blank" >RIV/61388955:_____/14:00432631 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jcat.2014.06.024" target="_blank" >http://dx.doi.org/10.1016/j.jcat.2014.06.024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcat.2014.06.024" target="_blank" >10.1016/j.jcat.2014.06.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acid and redox activity of template-free Al-rich H-BEA* and Fe-BEA* zeolites

Popis výsledku v původním jazyce

Al-rich template-free BEA* zeolite (Si/Al 4.6) was synthesized and its structure was analyzed in comparison with the conventional H-BEA* zeolite of Si/Al 11.3 using XRD, N2 sorption, SEM, FTIR, 27Al 3Q and 29Si MAS NMR spectroscopy, and DFT calculation of the deprotonation energies. The Al-rich H-BEA* exhibited a high concentration of Br?nsted and Lewis sites, both of high acid strength, although AlSiAl sequences were present in the framework. In Al-rich Fe-BEA* the exchanged Fe ions, Fe-oxo species, and Fe-oxo oligomers were identified by UV-vis spectroscopy. Cracking of n-decane, alkylation of benzene with benzyl alcohol and hydroamination of styrene with aniline to (anti)Markovnikov phenyl-[2-phenylethyl]amine over H-BEA *, and decomposition of N2Oand NH 3-SCR-NOx over Fe-BEA* were investigated in relation to the concentration and nature of acid and Fe-redox sites. The high concentration of Al-related active sites and the highly regular structure of Al-rich beta zeolite are directl

Název v anglickém jazyce

Acid and redox activity of template-free Al-rich H-BEA* and Fe-BEA* zeolites

Popis výsledku anglicky

Al-rich template-free BEA* zeolite (Si/Al 4.6) was synthesized and its structure was analyzed in comparison with the conventional H-BEA* zeolite of Si/Al 11.3 using XRD, N2 sorption, SEM, FTIR, 27Al 3Q and 29Si MAS NMR spectroscopy, and DFT calculation of the deprotonation energies. The Al-rich H-BEA* exhibited a high concentration of Br?nsted and Lewis sites, both of high acid strength, although AlSiAl sequences were present in the framework. In Al-rich Fe-BEA* the exchanged Fe ions, Fe-oxo species, and Fe-oxo oligomers were identified by UV-vis spectroscopy. Cracking of n-decane, alkylation of benzene with benzyl alcohol and hydroamination of styrene with aniline to (anti)Markovnikov phenyl-[2-phenylethyl]amine over H-BEA *, and decomposition of N2Oand NH 3-SCR-NOx over Fe-BEA* were investigated in relation to the concentration and nature of acid and Fe-redox sites. The high concentration of Al-related active sites and the highly regular structure of Al-rich beta zeolite are directl

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

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

318

Číslo periodika v rámci svazku

OCT 2014

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

22-33

Kód UT WoS článku

000343360800003

EID výsledku v databázi Scopus

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