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| Description
| - Advanced heterogeneous catalysts for olefin metathesis were prepared by supporting Re(VII) oxide on (i) mesostructured gamma-aluminas with lathlike and scaffold-like morphologies and (ii) organized mesoporous alumina with wormhole-like pore structure. The thermal spreading method was found to be very suitable technique for preparation of a highly active catalyst. In the case of dec-1-ene metathesis, Re(VII) oxide catalysts supported on mesoporous aluminas exhibited a high activity and selectivity independently of the type of catalyst support. For metathesis of olefin functional derivatives, namely p-allylanisole and diethyl diallylmalonate, the activity of Re(VII) catalysts with optimum amount of Re(VII) being 9.0 wt% (with Me4Sn as co-catalyst) was found to depend on the catalyst pore size. Catalyst prepared from mesoporous aluminas with pore sizes at least 4.0 nm exhibited much higher conversions of substrates compared with catalysts of 3.5 nm pores.
- Advanced heterogeneous catalysts for olefin metathesis were prepared by supporting Re(VII) oxide on (i) mesostructured gamma-aluminas with lathlike and scaffold-like morphologies and (ii) organized mesoporous alumina with wormhole-like pore structure. The thermal spreading method was found to be very suitable technique for preparation of a highly active catalyst. In the case of dec-1-ene metathesis, Re(VII) oxide catalysts supported on mesoporous aluminas exhibited a high activity and selectivity independently of the type of catalyst support. For metathesis of olefin functional derivatives, namely p-allylanisole and diethyl diallylmalonate, the activity of Re(VII) catalysts with optimum amount of Re(VII) being 9.0 wt% (with Me4Sn as co-catalyst) was found to depend on the catalyst pore size. Catalyst prepared from mesoporous aluminas with pore sizes at least 4.0 nm exhibited much higher conversions of substrates compared with catalysts of 3.5 nm pores. (en)
- Moderní heterogenní katalyzátory metateze olefinů byly připraveny nanesením oxidu rhenistého na (i) mesoporézní .nu.-aluminu s %22lath-like%22 a %22scaffold-like%22 morfologií a (ii) organisovanou mesoporézní aluminu s „wormhole-like“ strukturou. Nanesení provedené metodou teplotního rozestírání (thermal spreading) vedlo k přípravě velmi aktivních katalyzátorů. V případě metateze dec-1-enu, vykázaly tyto katalyzátory vysokou aktivitu a selektivitu nezávisle na typu použitého nosiče. V metatezi funkčních derivátů olefinů, jmenovitě p-allylanisolu a diethyldiallylmalonátu, aktivita těchto katalyzátorů (s optimálním obsahem Re = 9.0 vah.% a kokatalytickým přídavkem Me4Sn) závisela na velikosti póru katalyzátoru. Katalyzátory na nosičích o velikosti póru 4 nm a více, poskytly významně vyšší výtěžky metatezních produktů než katalyzátory o velikosti póru 3.5 nm. (cs)
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| Title
| - Re(VII) oxide on mesoporous alumina of different types - Activity in the metathesis of olefins and their oxygen-containing derivatives
- Oxid rhenistý nanesený na mesoporézní alumině různých typů – aktivita v metatezích olefinů a jejich kyslíkatých derivátů (cs)
- Re(VII) oxide on mesoporous alumina of different types - Activity in the metathesis of olefins and their oxygen-containing derivatives (en)
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| skos:prefLabel
| - Re(VII) oxide on mesoporous alumina of different types - Activity in the metathesis of olefins and their oxygen-containing derivatives
- Oxid rhenistý nanesený na mesoporézní alumině různých typů – aktivita v metatezích olefinů a jejich kyslíkatých derivátů (cs)
- Re(VII) oxide on mesoporous alumina of different types - Activity in the metathesis of olefins and their oxygen-containing derivatives (en)
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| skos:notation
| - RIV/61388955:_____/07:00082441!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(FT-TA/042), P(IAA4040411), V, 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
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/07:00082441
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - organized mesoporous alumina; metathesis; olefin functional derivatives; rhenium oxide (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
| - Applied Catalysis A - General
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Zhang, Z.
- Čejka, Jiří
- Balcar, Hynek
- Žilková, Naděžda
- Hamtil, Roman
- Pinnavaia, T. J.
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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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