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| rdf:type
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| Description
| - CoNH4-beta and CoH-beta zeolites, with various Co loadings were prepared by Co ion exchange into NH4- and H-beta parent zeolites, from which the template was removed by calcination of the as-synthesized beta zeolite in a stream of ammonia and oxygen, respectively. It has been found that the CoNH4-beta zeolites, in contrast to CoH-beta zeolites, exhibited high and stable activity in selective catalytic reduction of NOx with propane in the presence of water vapor (10 %). To analyze the reasons of the exceptional activity of CoNH4-beta zeolites, both zeolite preparations were studied with respect to the state and location of aluminium, character of Al-related acid sites and Co ion exchange capacity by means of FTIR spectra of OH groups of dehydrated zeolites and those after adsorption of d3-acetonitrile, 29Si , 27Al and 27Al 3Q MAS NMR spectra. It has been shown that the procedure of template removal in an ammonia stream (in contrast to standard calcination in oxygen).
- CoNH4-beta and CoH-beta zeolites, with various Co loadings were prepared by Co ion exchange into NH4- and H-beta parent zeolites, from which the template was removed by calcination of the as-synthesized beta zeolite in a stream of ammonia and oxygen, respectively. It has been found that the CoNH4-beta zeolites, in contrast to CoH-beta zeolites, exhibited high and stable activity in selective catalytic reduction of NOx with propane in the presence of water vapor (10 %). To analyze the reasons of the exceptional activity of CoNH4-beta zeolites, both zeolite preparations were studied with respect to the state and location of aluminium, character of Al-related acid sites and Co ion exchange capacity by means of FTIR spectra of OH groups of dehydrated zeolites and those after adsorption of d3-acetonitrile, 29Si , 27Al and 27Al 3Q MAS NMR spectra. It has been shown that the procedure of template removal in an ammonia stream (in contrast to standard calcination in oxygen). (en)
- CoNH4-beta andCoH-beta zeolity s různou koncentrací kobaltu, byly připraveny iontovou výměnou výchozích NH4- a H-beta zeolitů, ze kterých byl odstraněn templát kalcinací syntetizovaného beta zeolitu v proudu amoniaku a kyslíku, resp. Bylo zjištěno, že CoNH4-beta zeolity, ve srovnání s CoH-beta zeolity, vykazují vysokou a stabilní aktivitu v selektivní katalytické redukci NOx propanem v přítomnosti vodní páry (10 %). Z důvodu analýzy této vyjímečné aktivity CoNH4-beta zoelitů, obě přípravy zeolitů byly studovány ve vztahu ke stavu, lokalizaci a charakteru Al-typů kyselých center, a Co-iontové kapacity pomocí FTIR spekter OH skupin dehydratovaných zeolitů a po adsorpci d3-acetonitrilu a 29Si, 27Al a 27Al 3Q MAS NMR spectra. Postup odstranění templátu s použitím amoniaku vyrovnává negativní náboj skeletu NH4+ ionty a tím zamezuje perturbaci a dealuminace skeletu. Co-beta zeolit s vysokou koncentrací Td koordinovaných Al atomů ve skeletu (CoNH4-BERA) obsahuje vedle %22holých%22 Co iontů tak... (cs)
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| Title
| - Co-beta Zeolite Highly Active in Propane-SCR-NOx in the Presence of Water Vapor: Effect of Zeolite Preparation and Al Distribution in the Framework
- Co-beta zeolit vysoce aktivní v reakci propan-SCR-NOx v přítomnosti vodní páry: efekt přípravy zeolitu a distribuce Al ve skeletu (cs)
- Co-beta Zeolite Highly Active in Propane-SCR-NOx in the Presence of Water Vapor: Effect of Zeolite Preparation and Al Distribution in the Framework (en)
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| skos:prefLabel
| - Co-beta Zeolite Highly Active in Propane-SCR-NOx in the Presence of Water Vapor: Effect of Zeolite Preparation and Al Distribution in the Framework
- Co-beta zeolit vysoce aktivní v reakci propan-SCR-NOx v přítomnosti vodní páry: efekt přípravy zeolitu a distribuce Al ve skeletu (cs)
- Co-beta Zeolite Highly Active in Propane-SCR-NOx in the Presence of Water Vapor: Effect of Zeolite Preparation and Al Distribution in the Framework (en)
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| skos:notation
| - RIV/61388955:_____/04:00107577!RIV/2005/AV0/A54005/N
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(1P04OCD15.20), Z(AV0Z4040901)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| 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:_____/04:00107577
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - Co-beta; SCR-NOx; Al distribution in zeolites (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| |
| 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
| - Dědeček, Jiří
- Wichterlová, Blanka
- Čapek, Libor
|
| http://linked.open...n/vavai/riv/zamer
| |
| issn
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| number of pages
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