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rdf:type
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Description
| - Zeolity jsou krystalické mikroporézní materiály široce používané jako molekulární síta a katalyzátory v průmyslových chemických procesech. Zejména křemíkem bohaté zeolity (Si/Al>12) jako ZSM-5 (MFI skelet) přitáhly pozornost. Katalyticky aktivní species, to jest protony, kationty kovů a kov-oxid kovu kationty kompenzují negativní náboj mikroporézního hliníko-křemíkového skeletu [Sin-mAlmO2n]m- které jsou tvořené rohy sdílejícími TO4 tetrahedry (T=Si, Al-). Typickým rysem mnoha křemíkem bohatých zeolitů je vysoký počet krystalograficky rozlišitelných T posicí. Neboť kationické species se vážou k AlO4- tetraedrům, krystalografická posice hliníku v zeolitickém skeletu určuje lokalizaci aktivních species. (cs)
- eolites are crystalline microporous aluminosilicates widely used as molecular sieves and catalysts in industrial chemical processes. Silicon-rich zeolites (Si/Al>12) such as ZSM-5 (MFI framework) have found particular attention. The catalytically active species, that is, protons, metal cations, and metal-oxo cations, compensate the negative charge of the microporous aluminosilicate frameworks [Sin-mAlmO2n]m- made of corner-sharing TO4 tetrahedra (T=Si, Al-). A typical feature of many silicon-rich zeolites is a high number of crystallographically distinguishable T sites. Since the cationic species bind to the AlO4- tetrahedra, the crystallographic position of aluminum in zeolite frameworks governs the location of the active sites, which in turn affects the catalytic activity and selectivity.
- eolites are crystalline microporous aluminosilicates widely used as molecular sieves and catalysts in industrial chemical processes. Silicon-rich zeolites (Si/Al>12) such as ZSM-5 (MFI framework) have found particular attention. The catalytically active species, that is, protons, metal cations, and metal-oxo cations, compensate the negative charge of the microporous aluminosilicate frameworks [Sin-mAlmO2n]m- made of corner-sharing TO4 tetrahedra (T=Si, Al-). A typical feature of many silicon-rich zeolites is a high number of crystallographically distinguishable T sites. Since the cationic species bind to the AlO4- tetrahedra, the crystallographic position of aluminum in zeolite frameworks governs the location of the active sites, which in turn affects the catalytic activity and selectivity. (en)
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Title
| - Aluminum siting in silicon-rich zeolite frameworks: A combined high-resolution Al-27 NMR spectroscopy and quantum mechanics/molecular mechanics study of ZSM-5
- Aluminum siting in silicon-rich zeolite frameworks: A combined high-resolution Al-27 NMR spectroscopy and quantum mechanics/molecular mechanics study of ZSM-5 (en)
- Pozice hliníku v zeolitickém skeletu: ALNMR spektroskopie a kvantová mechanika/studie molekulární mechaniky na ZSM-5 (cs)
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skos:prefLabel
| - Aluminum siting in silicon-rich zeolite frameworks: A combined high-resolution Al-27 NMR spectroscopy and quantum mechanics/molecular mechanics study of ZSM-5
- Aluminum siting in silicon-rich zeolite frameworks: A combined high-resolution Al-27 NMR spectroscopy and quantum mechanics/molecular mechanics study of ZSM-5 (en)
- Pozice hliníku v zeolitickém skeletu: ALNMR spektroskopie a kvantová mechanika/studie molekulární mechaniky na ZSM-5 (cs)
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skos:notation
| - RIV/61388955:_____/07:00090513!RIV08-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(1ET400400413), P(GA203/06/1449), P(IAA4040308), 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:_____/07:00090513
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - MQ MAS NMR; chemical-shifts; ab-initio; catalysts (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Angewandte Chemie. International Edition in English
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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
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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
| - Dědeček, Jiří
- Li, Chengbin
- Sklenák, Štěpán
- Wichterlová, Blanka
- Sauer, J.
- Gábová, Vendula
- Sierka, M.
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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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is http://linked.open...avai/riv/vysledek
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