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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F08%3A00309573%21RIV09-AV0-61388955
rdf:type
n6:Vysledek skos:Concept
dcterms:description
The effect of the concentration of Lewis acid sites on the activity and selectivity of different molecular sieve catalysts was investigated in the Friedel-Crafts acylation of ferrocene with acetic anhydride, toluene with isobutyryl chloride, and cyclohexene and 1-methylcyclohexene with propionic anhydride. H-, Zn-, Fe-, Al-, and La-forms of mesoporous molecular sieves (Al)MCM-41 and (Al)SBA-15 were studied and compared with large-pore zeolites. No general relationship between the type of cation and conversion of substrate was found. In acylation of ferrocene the highest ferrocene conversions were reached over Zn- and H-atoms while in toluene acylation Al-forms were the most active. The selectivities over mesoporous molecular sieves were lower (61-89 %) compared with zeolites (82-98 %). The effect of the concentration of Lewis acid sites on the activity and selectivity of different molecular sieve catalysts was investigated in the Friedel-Crafts acylation of ferrocene with acetic anhydride, toluene with isobutyryl chloride, and cyclohexene and 1-methylcyclohexene with propionic anhydride. H-, Zn-, Fe-, Al-, and La-forms of mesoporous molecular sieves (Al)MCM-41 and (Al)SBA-15 were studied and compared with large-pore zeolites. No general relationship between the type of cation and conversion of substrate was found. In acylation of ferrocene the highest ferrocene conversions were reached over Zn- and H-atoms while in toluene acylation Al-forms were the most active. The selectivities over mesoporous molecular sieves were lower (61-89 %) compared with zeolites (82-98 %). Tématem práce je Lewisova acidita mesoporézních molekulárních sít pro acylační reakce.
dcterms:title
Lewisova acidita mesoporézních molekulárních sít pro acylační reakce Lewis acidity of mesoporous molecular sieves for acylation reactions Lewis acidity of mesoporous molecular sieves for acylation reactions
skos:prefLabel
Lewis acidity of mesoporous molecular sieves for acylation reactions Lewis acidity of mesoporous molecular sieves for acylation reactions Lewisova acidita mesoporézních molekulárních sít pro acylační reakce
skos:notation
RIV/61388955:_____/08:00309573!RIV09-AV0-61388955
n4:aktivita
n12:P n12:Z
n4:aktivity
P(GA104/07/0383), Z(AV0Z40400503)
n4:dodaniDat
n11:2009
n4:domaciTvurceVysledku
n5:6873170 n5:7781725 n5:7016662 n5:4492803 n5:2410044
n4:druhVysledku
n9:D
n4:duvernostUdaju
n17:S
n4:entitaPredkladatele
n13:predkladatel
n4:idSjednocenehoVysledku
376685
n4:idVysledku
RIV/61388955:_____/08:00309573
n4:jazykVysledku
n20:eng
n4:klicovaSlova
mesoporous molecular sieves; Lewis acidity; acylation reactions
n4:klicoveSlovo
n7:acylation%20reactions n7:Lewis%20acidity n7:mesoporous%20molecular%20sieves
n4:kontrolniKodProRIV
[B4D436B55415]
n4:mistoKonaniAkce
Vancouver
n4:mistoVydani
Singapore
n4:nazevZdroje
Nanoporous Materials
n4:obor
n18:CF
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
5
n4:projekt
n14:GA104%2F07%2F0383
n4:rokUplatneniVysledku
n11:2008
n4:tvurceVysledku
Vlk, Josef Procházková, Dana Šiklová, Helena Bejblová, Martina Čejka, Jiří
n4:typAkce
n21:WRD
n4:zahajeniAkce
2008-05-25+02:00
n4:zamer
n19:AV0Z40400503
s:numberOfPages
10
n15:hasPublisher
World Scientific Publ. Co. Pte. Ltd
n16:isbn
978-981-277-915-1