| Attributes | Values |
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| rdf:type
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| Description
| - Byla zkoumána porézní struktura mikro/mesoporézních kompozitních materiálů, jež byly syntetizovány z prekursorů pro přípravu mikroporézního molekulového síta Beta a mesoporézní siliky MCM-48. Při krátké době krystalizace vznikaly jen malé zeolitické domény, s prodloužením doby krystalizace byl pozorován růst částic zeolitu Beta. Analýza isoterem dusíku, provedená pomocí .alpha.s metody, odhalila vzájemný vztah mezi podmínkami syntézy a charakterem mikroporézní a mesoporézní struktury studovaných materiálů. S rostoucí velikostí zeolitických domén se u připravených materiálů snižovala mesoporozita a zvyšovala mikroporozita. Strukturní poznatky, získané z adsorpčních dat, byly potvrzeny měřením rentgenové difrakce. (cs)
- The porous structure of a series of micro/mesoporous composite materials synthesized from a mixture of precursor solutions generally used for preparation of Beta microporous molecular sieves and pure mesoporous MCM-48 silica has been investigated. A short crystallization time of the precursor solutions results in the formation of small crystalline zeolitic domains, while after prolonged synthesis the development of larger Beta zeolitic crystallites id observed. An analysis of nitrogen isotherms based on the .alpha.s - method has revealed a relationship between the synthesis conditions and the development of both micro- and mesoporosity of these materials. With increasing the size of the zeolitic domains the mesoporosity of the composite materials decreases while the microporosity is increased. The structural features of these composites determined by XRD corroborate with the nitrogen sorption results.
- The porous structure of a series of micro/mesoporous composite materials synthesized from a mixture of precursor solutions generally used for preparation of Beta microporous molecular sieves and pure mesoporous MCM-48 silica has been investigated. A short crystallization time of the precursor solutions results in the formation of small crystalline zeolitic domains, while after prolonged synthesis the development of larger Beta zeolitic crystallites id observed. An analysis of nitrogen isotherms based on the .alpha.s - method has revealed a relationship between the synthesis conditions and the development of both micro- and mesoporosity of these materials. With increasing the size of the zeolitic domains the mesoporosity of the composite materials decreases while the microporosity is increased. The structural features of these composites determined by XRD corroborate with the nitrogen sorption results. (en)
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| Title
| - Porosity of micro/mesoporous composites
- Porosity of micro/mesoporous composites (en)
- Porozita mikro/mesoporézních kompozitů (cs)
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| skos:prefLabel
| - Porosity of micro/mesoporous composites
- Porosity of micro/mesoporous composites (en)
- Porozita mikro/mesoporézních kompozitů (cs)
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| skos:notation
| - RIV/61388955:_____/06:00039034!RIV07-AV0-61388955
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(FT-TA/040), P(GA203/05/0197), Z(AV0Z40400503)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/06:00039034
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - micro/mesoporous composite; nitrogen adsorption; porous structure development (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Microporous and Mesoporous Materials
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Zukal, Arnošt
- Čejka, Jiří
- Žilková, Naděžda
- Mintova, S.
- Fojtíková, P.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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