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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F06%3A00042096%21RIV07-AV0-61388955
rdf:type
n6:Vysledek skos:Concept
dcterms:description
Vliv přídavku uhlíkových částic na syntézu zeolitu ZSM-5 byl zkoumán pomocí sekundárního templátování nebo syntézy v omezeném prostoru. Připravené mezoporézní zeolity ZSM-5 byly charakterizovány pomocí difrakce rentgenova záření, adsorpce dusíku, rastrovací elektronové mikroskopie a adsorpce d3-acetonitrilu sledované infračervenou spektroskopií. Připravené materiály vykazovaly vysokou krystalinitu; objem mezopórů pak závisel na množství uhlíku v syntézním gelu. Při aplikaci metody sekundárního templátování byly velikost mezopórů a velikost uhlíkových částic blízké. V případě syntézy v omezeném prostoru byla nalezena relativně široká distribuce mezopórů, způsobená agregací uhlíkových částic. The effect of addition of carbon particles on the sznthesis of ZSM-5 zeolites and formation of mesopores inside of zeolite crystals was investigated using secondary templating or synthesis in confined space. Mesoporous ZSM-5 zeolites were characterized by X-ray powder diffraction, nitrogen adsorption, scanning electron microscopy and adsorption of d3-acetonitrile followed by infrared spectroscopy. Highly crystalline ZSM-5 zeolites were synthesized, the mesoporous volume of which depends on the amount of carbon added to the synthesis gel. While for secondary templating approach diameter of mesopores was closed to the size of carbon particles, in the case of synthesis performed in confined space pore size of carbon particles, in the case of synthesis performed in confined space pore size distribution was much broader due to the presence of aggregates of carbon particles. The effect of addition of carbon particles on the sznthesis of ZSM-5 zeolites and formation of mesopores inside of zeolite crystals was investigated using secondary templating or synthesis in confined space. Mesoporous ZSM-5 zeolites were characterized by X-ray powder diffraction, nitrogen adsorption, scanning electron microscopy and adsorption of d3-acetonitrile followed by infrared spectroscopy. Highly crystalline ZSM-5 zeolites were synthesized, the mesoporous volume of which depends on the amount of carbon added to the synthesis gel. While for secondary templating approach diameter of mesopores was closed to the size of carbon particles, in the case of synthesis performed in confined space pore size of carbon particles, in the case of synthesis performed in confined space pore size distribution was much broader due to the presence of aggregates of carbon particles.
dcterms:title
Vznik mezopórů v ZSM-5 pomocí templátování uhlíkem Formation of mesopores in ZSM-5 by carbon templating Formation of mesopores in ZSM-5 by carbon templating
skos:prefLabel
Formation of mesopores in ZSM-5 by carbon templating Formation of mesopores in ZSM-5 by carbon templating Vznik mezopórů v ZSM-5 pomocí templátování uhlíkem
skos:notation
RIV/61388955:_____/06:00042096!RIV07-AV0-61388955
n3:strany
905;912
n3:aktivita
n15:Z n15:P
n3:aktivity
P(1QS400400560), P(GA203/05/0197), P(KJB4040402), Z(AV0Z40400503)
n3:dodaniDat
n18:2007
n3:domaciTvurceVysledku
n11:7016662 n11:7847742 n11:9803076 n11:6503284 n11:5283396
n3:druhVysledku
n20:D
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
476177
n3:idVysledku
RIV/61388955:_____/06:00042096
n3:jazykVysledku
n8:eng
n3:klicovaSlova
ZSM-5 zeolites; synthesis; catalysis
n3:klicoveSlovo
n12:synthesis n12:catalysis n12:ZSM-5%20zeolites
n3:kontrolniKodProRIV
[B6054289FE20]
n3:mistoKonaniAkce
Louvain-la-Neuve
n3:mistoVydani
Amsterdam
n3:nazevZdroje
Scientific Bases for the Preparation of Heterogeneous Catalysts
n3:obor
n4:CF
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n7:1QS400400560 n7:GA203%2F05%2F0197 n7:KJB4040402
n3:rokUplatneniVysledku
n18:2006
n3:tvurceVysledku
Čejka, Jiří Žilková, Naděžda Košová, Gabriela Pavlačková, Zuzana Zukal, Arnošt
n3:typAkce
n16:WRD
n3:zahajeniAkce
2006-09-10+02:00
n3:zamer
n14:AV0Z40400503
s:numberOfPages
8
n9:hasPublisher
Elsevier
n21:isbn
0-444-52827-X