About: Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine.

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About: Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In order to obtain a suitable model system for investigating the formation of nanodefects in a zeolite framework during the in situ synthesis of phthalocyanines, metal-free phthalocyanine was encapsulated within the pores of a NaY zeolite by in situ cyclotetramerization of adsorbed 1,2-dicyanobenzene. Such defects will be regarded as nanodefects, which are created by removal of only a few atoms or ions from framework positions. In contrast to scanning electron microscopy, powder X-ray diffraction, nitrogen adsorption, Al-27, and Si-29 MAS NMR, all showing no significant changes, the occurrence of an absorption at lambda approximate to 280 nm in the diffuse reflectance UV spectrum was found to be characteristic for nanodefects in the zeolite framework. This absorption occurs due to the change of the coordination of a small percentage of framework aluminum centers from tetrahedral to octahedral. In order to obtain a suitable model system for investigating the formation of nanodefects in a zeolite framework during the in situ synthesis of phthalocyanines, metal-free phthalocyanine was encapsulated within the pores of a NaY zeolite by in situ cyclotetramerization of adsorbed 1,2-dicyanobenzene. Such defects will be regarded as nanodefects, which are created by removal of only a few atoms or ions from framework positions. In contrast to scanning electron microscopy, powder X-ray diffraction, nitrogen adsorption, Al-27, and Si-29 MAS NMR, all showing no significant changes, the occurrence of an absorption at lambda approximate to 280 nm in the diffuse reflectance UV spectrum was found to be characteristic for nanodefects in the zeolite framework. This absorption occurs due to the change of the coordination of a small percentage of framework aluminum centers from tetrahedral to octahedral. (en)
Title	Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine. Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine. (en)
skos:prefLabel	Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine. Detection of a Nanodefects in the Framework of NaY Zeolite Originating from the in situ Synthesis of Metal-Free Phthalocyanine. (en)
skos:notation	RIV/61388955:_____/02:54030052!RIV/2004/AV0/A54004/N
http://linked.open.../vavai/riv/strany	131;138
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA4040804), Z(AV0Z4040901)
http://linked.open...iv/cisloPeriodika	N/A
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Rathouský, Jiří Zukal, Arnošt
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	642615
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/02:54030052
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	NaY; encapsulation of phthalocyanine; nanodefects (en)
http://linked.open.../riv/klicoveSlovo	NaY encapsulation of phthalocyanine nanodefects
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[93B0A3B9DD92]
http://linked.open...i/riv/nazevZdroje	Microporous and Mesoporous Materials
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Electrochemical properties of highly organized titanium dioxide
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	56
http://linked.open...iv/tvurceVysledku	Rathouský, Jiří Zukal, Arnošt Wark, M. Wöhrle, D. Schulz-Ekloff, G. Prochnow, P. Borowski, M.
http://linked.open...n/vavai/riv/zamer	Objasňování zákonitostí vztahů struktury a vlastností - zejména dynamiky a chemické reaktivity - látek a molekulárních systémů
issn	1387-1811
number of pages	8 (xsd:int)

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