| Attributes | Values |
|---|
| rdf:type
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| Description
| - V acylačních reakcí ferrocenu a toluenu byl zkoumán vliv typu kyselých center (Broenstedova vs. Lewisova) v různých molekulových sítech. Pro reakce byly použity H, Zn, Fe a Al formy zeolitů Beta, USY a mesoporézních molekulových sít (Al)MCM-41 a (Al) a SBA-15. Bylo zjištěno, že přidané kationy působící jako Lewisova kyselá centra zvyšují aktivitu testovaných katalyzátorů. Nebyl nalezen obecně platný vztah mezi typem kationtu a konverzí jednotlivých substrátů. V případě acylace ferrocenu byla nejvyšší aktivita pozorována u Zn-forem, zatímco při acylaci toluenu nejvyšší aktivity vykazovaly Al-formy testovaných molekulových sít. (cs)
- The role of the type of acid site (Broensted vs. Lewis) on the activity and selectivity of molecular sieve catalysts was investigated in ferrocene and toluene acylation. H-, Zn-, Fe-, Aland La-forms of zeolite Beta, USY and mesoporous molecular sieves (Al) MCM-41, (Al) SBA-15 were tested. It was observed that addition of metal cations acting as Lewis acid sites can increase the acidity of various molecular sieve catalysts. No general relationship between the type of cation and conversion of individual substrate was found. While the highest activity in ferrocene acylation was observed after addition of Zn, in the case of toluene acylation Al-forms of catalysts were the most active. The results indicate that the acid strength of cationic Lewis sites controls their activity in acylation reactions.
- The role of the type of acid site (Broensted vs. Lewis) on the activity and selectivity of molecular sieve catalysts was investigated in ferrocene and toluene acylation. H-, Zn-, Fe-, Aland La-forms of zeolite Beta, USY and mesoporous molecular sieves (Al) MCM-41, (Al) SBA-15 were tested. It was observed that addition of metal cations acting as Lewis acid sites can increase the acidity of various molecular sieve catalysts. No general relationship between the type of cation and conversion of individual substrate was found. While the highest activity in ferrocene acylation was observed after addition of Zn, in the case of toluene acylation Al-forms of catalysts were the most active. The results indicate that the acid strength of cationic Lewis sites controls their activity in acylation reactions. (en)
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| Title
| - The effect of type of acid sites in molecular sieves on activity and selectivity in acylation reactions
- The effect of type of acid sites in molecular sieves on activity and selectivity in acylation reactions (en)
- Vliv typu kyselých center molekulových sít na aktivitu a selektivitu acylačních reakcí (cs)
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| skos:prefLabel
| - The effect of type of acid sites in molecular sieves on activity and selectivity in acylation reactions
- The effect of type of acid sites in molecular sieves on activity and selectivity in acylation reactions (en)
- Vliv typu kyselých center molekulových sít na aktivitu a selektivitu acylačních reakcí (cs)
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| skos:notation
| - RIV/61388955:_____/07:00091838!RIV08-AV0-61388955
|
| http://linked.open.../vavai/riv/strany
| |
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GA104/07/0383), P(GD203/03/H140), Z(AV0Z40400503)
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| http://linked.open...iv/cisloPeriodika
| |
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/07:00091838
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - molecular sieves; catalysis; zeolites (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| |
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| - Collection of Czechoslovak Chemical Communications
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Procházková, Dana
- Čejka, Jiří
- Bejblová, Martina
- Šiklová, Helena
- Vlk, J.
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| http://linked.open...n/vavai/riv/zamer
| |
| issn
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| number of pages
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