About: Characterization of textural and surface properties of mesoporous metathesis catalysis

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Katalyzátory metatezí na bázi oxidu rhenistého naneseného na organizovanou mezoporézní aluminu (OMA) byly charakterizovány následujícími metodami: difrakcí rentgenového záření (XRD), rentgenovou fotoelektronovou spektroskopií (XPS), FTIR spektroskopií, MAS NMR spektroskopií a adsorpcí dusíku s cílem porozumět změnám texturních a chemických vlastností uvedených katalyzátorů, a to jak v procesu jejich aktivace tak v průběhu reakce metateze olefinů. Přítomnost pentakoordinovaného Al, četnost kyselých OH skupin, koncentrace Lewisových kyselých center a redukovatelnost Re 7+ na Re 4+ na povrchu OMA představují hlavní vlastnosti diskutované v souvislosti s katalytickou aktivitou. (cs) Metathesis catalysts based on Re(VII)oxide supported on organized mesoporous alumina (OMA) were characterized by a number of experimental techniques including X-ray diffraction (XRD), X-ray photoelectron (XPS) and FTIR spectroscopy, MAS NMR, and nitrogen isotherms to understand the changes in textural and chemical properties during the activation and the metathesis reaction of olefins. The presence of pentacoordinated Al, population of acidic OH groups, concentration of Lewis acid sites and reducibility of Re (VII) oxide to Re(IV) species in OMA based catalysts – there are the main features, which were discussed in connection with catalytic activity. Metathesis catalysts based on Re(VII)oxide supported on organized mesoporous alumina (OMA) were characterized by a number of experimental techniques including X-ray diffraction (XRD), X-ray photoelectron (XPS) and FTIR spectroscopy, MAS NMR, and nitrogen isotherms to understand the changes in textural and chemical properties during the activation and the metathesis reaction of olefins. The presence of pentacoordinated Al, population of acidic OH groups, concentration of Lewis acid sites and reducibility of Re (VII) oxide to Re(IV) species in OMA based catalysts – there are the main features, which were discussed in connection with catalytic activity. (en)
Title	Characterization of textural and surface properties of mesoporous metathesis catalysis Charakterizace texturních a povrchových vlastností mesoporézních katalyzátorů metatezí (cs) Characterization of textural and surface properties of mesoporous metathesis catalysis (en)
skos:prefLabel	Characterization of textural and surface properties of mesoporous metathesis catalysis Charakterizace texturních a povrchových vlastností mesoporézních katalyzátorů metatezí (cs) Characterization of textural and surface properties of mesoporous metathesis catalysis (en)
skos:notation	RIV/61388955:_____/07:00087064!RIV08-AV0-61388955
http://linked.open.../vavai/riv/strany	1145;1152
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FT-TA/042), P(IAA4040411), Z(AV0Z40400503)
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Zukal, Arnošt Čejka, Jiří Dědeček, Jiří Balcar, Hynek Žilková, Naděžda Bastl, Zdeněk Brabec, Libor Hamtil, Roman
http://linked.open.../riv/druhVysledku	C - Kapitola v knize
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	413360
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/07:00087064
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	catalysis; zeolites; metathesis (en)
http://linked.open.../riv/klicoveSlovo	catalysis zeolites metathesis
http://linked.open...ontrolniKodProRIV	[39198904A770]
http://linked.open...i/riv/mistoVydani	Amsterdam
http://linked.open...vEdiceCisloSvazku	Studies in surface science and catalysis
http://linked.open...i/riv/nazevZdroje	From Zeolites to Porous MOF Materials - the 40th Anniversary of International Zeolite Conference
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	8 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	*The development of progressive types of alumina for special applications. Transition metal oxides supported on mesoporous molecular sieves for olefin metathesis reactions
http://linked.open...UplatneniVysledku	2007
http://linked.open...iv/tvurceVysledku	Dědeček, Jiří Zukal, Arnošt Čejka, Jiří Balcar, Hynek Žilková, Naděžda Bastl, Zdeněk Hamtil, Roman Brabec, Libor
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Elsevier
https://schema.org/isbn	978-0-444-53068-4

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