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| Description
| - New types of heterogeneous catalysts for alkene metathesis based on molybdenum oxide supported on mesoporous molecular sieves MCM-41, MCM-48 and SBA-15 were developed. These new systems represent inexpensive, easy-to-prepare and highly active and selective heterogeneous catalysts for metathesis of linear alkenes applicable under mild reaction conditions without the necessity of solvent or co-catalyst presence in the reaction mixture. In metathesis of 1-octene, these catalysts showed considerably higher activity compared with MoO3 supported on conventional silica with selectivity to 7-tetradecene being in the range between 60% and 95%. The highest activity exhibited MoO3/MCM-41 with 6 wt.% of Mo (75% conversion after 6 h at 40 oC with selectivity to 7-tetradecene 84%). The turn-over-frequency of the catalysts loaded with 8 wt.% of Mo decreased in the order MCM-41 > MCM-48 > SBA-15, while the selectivity slightly increased in the same order.
- New types of heterogeneous catalysts for alkene metathesis based on molybdenum oxide supported on mesoporous molecular sieves MCM-41, MCM-48 and SBA-15 were developed. These new systems represent inexpensive, easy-to-prepare and highly active and selective heterogeneous catalysts for metathesis of linear alkenes applicable under mild reaction conditions without the necessity of solvent or co-catalyst presence in the reaction mixture. In metathesis of 1-octene, these catalysts showed considerably higher activity compared with MoO3 supported on conventional silica with selectivity to 7-tetradecene being in the range between 60% and 95%. The highest activity exhibited MoO3/MCM-41 with 6 wt.% of Mo (75% conversion after 6 h at 40 oC with selectivity to 7-tetradecene 84%). The turn-over-frequency of the catalysts loaded with 8 wt.% of Mo decreased in the order MCM-41 > MCM-48 > SBA-15, while the selectivity slightly increased in the same order. (en)
- Byly vyvinuty nové typy heterogenních katalyzátorů pro metathesi alkenů, založené na oxidu molybdenovém naneseném na mesoporesních molekulových sítech MCM-41, MCM-48 a SBA-15. Tyto nové systémy představují levné, snadno připravitelné a vysoce aktivní a selektivní heterogenní katalyzátory pro metathese lineárních alkenů použitelné za mírných reakčních podmínek bez nutnosti použití rozpouštědla nebo kokatalyzátoru. Ve srovnání s oxidem molybdenovým naneseným na konveční silice vykázaly tyto katalyzátory v metathesi 1-oktenu značně vyšší aktivitu se selektivitou v rozmezí od 60 % do 90 %. Nejvyšší aktivitu poskytl katalyzátor MoO3/MCM-41 se šesti váhovými procenty Mo (konverze 75 % po šesti hodinách při teplotě 40 oC se selektivitou na 7-tetradecen 84 %). Turn-over frekvence katalyzátorů s loadingem 8 váhových procent Mo klesala v pořadí MCM-41 > MCM-48 > SBA-15, zatímco selektivita v uvedeném pořadí mírně rostla. (cs)
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| Title
| - Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture
- Metathese 1-oktenu na oxidu molybdenovém naneseném na mesoporesních molekulových sítech: vliv architektury nosiče (cs)
- Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture (en)
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| skos:prefLabel
| - Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture
- Metathese 1-oktenu na oxidu molybdenovém naneseném na mesoporesních molekulových sítech: vliv architektury nosiče (cs)
- Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture (en)
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| skos:notation
| - RIV/61388955:_____/06:00044451!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(GD203/03/H140), P(IAA4040411), 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:_____/06:00044451
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - metathesis; 1-octene; mesoporous molecular sieves; molybdenum oxide; Raman spectroscopy (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
| |
| 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
| - Rathouský, Jiří
- Topka, Pavel
- Čejka, Jiří
- Balcar, Hynek
- Žilková, Naděžda
- Verpoort, F.
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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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