Expanze krystalu silikalitu-1 vyvolaná adsorbátem

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F08%3A00321029" target="_blank" >RIV/61388955:_____/08:00321029 - 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

Adsorbate-Induced Expansion of Silicalite-1 Crystals

Popis výsledku v původním jazyce

Optical microscopy and XRD measurements show that silicalite-1 crystals expand when C-4-C-8 alkanes and i-butane adsorb in the MFI structure at room temperature. The c-direction linear expansion was 0.20-0.45%, and was measured with XRD and optical microscopy for 200 pm crystals. n-Pentane, n-hexane, and n-heptane had the maximum linear expansion of approximately 0.54% in the b-direction, and n-hexane and n-heptane had the maximum volume expansion of 1.2%. In contrast, benzene did not cause a significant change in the unit cell Volume. The a-direction expanded least for the molecules studied except i-butane. n-Hexane expanded the silicalite-1 crystal more at 180 K than at room temperature. Crystal expansion due to n-alkane adsorption decreased the sizeof defects in a polycrystalline MFI membrane, and changes in the fluxes of i-octane through defects were measured by transient permeation.

Název v anglickém jazyce

Adsorbate-Induced Expansion of Silicalite-1 Crystals

Popis výsledku anglicky

Optical microscopy and XRD measurements show that silicalite-1 crystals expand when C-4-C-8 alkanes and i-butane adsorb in the MFI structure at room temperature. The c-direction linear expansion was 0.20-0.45%, and was measured with XRD and optical microscopy for 200 pm crystals. n-Pentane, n-hexane, and n-heptane had the maximum linear expansion of approximately 0.54% in the b-direction, and n-hexane and n-heptane had the maximum volume expansion of 1.2%. In contrast, benzene did not cause a significant change in the unit cell Volume. The a-direction expanded least for the molecules studied except i-butane. n-Hexane expanded the silicalite-1 crystal more at 180 K than at room temperature. Crystal expansion due to n-alkane adsorption decreased the sizeof defects in a polycrystalline MFI membrane, and changes in the fluxes of i-octane through defects were measured by transient permeation.

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000261279700073

EID výsledku v databázi Scopus

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