Location of Chemisorbed Methylium Ions in Zeolites by Neutron Diffraction

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

Location of Chemisorbed Methylium Ions in Zeolites by Neutron Diffraction

Popis výsledku v původním jazyce

Distribution of chemisorbed methyl groups and sodium cations in the structure of NaY, NaX and NaLSX zeolites was estimated by neutron diffraction. Changes in the distribution of structural sodium cations in the lattice after chemisorption of methyl cations have been detected. Distancies of C-O in surface methoxy groups in empty cavities were found to be longer than in ordinary crystalline metalloorganic compounds with bridging methoxyls. The location of chemisorbed methyl groups at O1 lattice oxygen type was found to be most probable for NaY. Nuclear densities of chemisorbed methyl were detected in NaX at O1 and at O4 lattice oxygen. The origin of the split signal at 58 ppm on NaX and NaLSX samples has been discussed. Zeolitic catalysts are used in industrial chemistry.

Název v anglickém jazyce

Location of Chemisorbed Methylium Ions in Zeolites by Neutron Diffraction

Popis výsledku anglicky

Distribution of chemisorbed methyl groups and sodium cations in the structure of NaY, NaX and NaLSX zeolites was estimated by neutron diffraction. Changes in the distribution of structural sodium cations in the lattice after chemisorption of methyl cations have been detected. Distancies of C-O in surface methoxy groups in empty cavities were found to be longer than in ordinary crystalline metalloorganic compounds with bridging methoxyls. The location of chemisorbed methyl groups at O1 lattice oxygen type was found to be most probable for NaY. Nuclear densities of chemisorbed methyl were detected in NaX at O1 and at O4 lattice oxygen. The origin of the split signal at 58 ppm on NaX and NaLSX samples has been discussed. Zeolitic catalysts are used in industrial chemistry.

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

Abstract Book of the 10. International Symposium and Exhibition

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

30-30

Název nakladatele

Association of Innovative Entrepreneurship CR

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

2. 12. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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