About: Synthesis, modification andcharacterization of MWW framework topology materials

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	V předkládané práci byl detailně studován vliv podmínek syntézy na výsledné strukturní a chemické vlastnosti molekulových sít MWW materiálů. Pozornost byla dále věnována optimalizaci dealuminace těchto materiálů se snahou snížit obsah hliníku v mřížce zeolitů, což by mohlo vést ke spojení dvou původně nezávislých kanálů charakteristických pro struktury MWW zeolitů. Zeolit MCM-22 se podařilo úspěšně syntetizovat s poměrem Si/Al vyšším než 12, zatímco při nižších poměrech Si/Al byl získán zeolit MCM-56. Bylo zjištěno, že molárním poměrem organického templátu k anorganickým kationům lze ovlivnit syntézu vedoucí buď k MCM-22 nebo k MCM-49. (cs) The effect of the synthesis procedure andvariables on the resulting chemical and structural properties of molecular sieves of the MWW family was investigated in detail. In addition, dealumination procedure was optimized to decrease the concentration of framework aluminium, which might lead to the connectivity of both originally independent channel systems. MCM-22 was successfully synthesized with Si/Al ratios higher that 12, while at lower ratios MCM-56 was obtained. The molar ratio of organic templates to inorganic cations forwarded the synthesis towards MCM-22 or MCM-49. Much higher stability of MCM-22 was found against steam treatment compared to alkali treatment. The effect of the synthesis procedure andvariables on the resulting chemical and structural properties of molecular sieves of the MWW family was investigated in detail. In addition, dealumination procedure was optimized to decrease the concentration of framework aluminium, which might lead to the connectivity of both originally independent channel systems. MCM-22 was successfully synthesized with Si/Al ratios higher that 12, while at lower ratios MCM-56 was obtained. The molar ratio of organic templates to inorganic cations forwarded the synthesis towards MCM-22 or MCM-49. Much higher stability of MCM-22 was found against steam treatment compared to alkali treatment. (en)
Title	Synthesis, modification andcharacterization of MWW framework topology materials Synthesis, modification andcharacterization of MWW framework topology materials (en) Syntéza, modifikace a charakterizace MWW materiálů (cs)
skos:prefLabel	Synthesis, modification andcharacterization of MWW framework topology materials Synthesis, modification andcharacterization of MWW framework topology materials (en) Syntéza, modifikace a charakterizace MWW materiálů (cs)
skos:notation	RIV/61388955:_____/07:00085032!RIV08-AV0-61388955
http://linked.open.../vavai/riv/strany	610;615
http://linked.open...avai/riv/aktivita	P R Z
http://linked.open...avai/riv/aktivity	P(GA104/05/0192), R, Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Bejblová, Martina Čejka, Jiří Pawlesa, Justyna
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	453913
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/07:00085032
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	synthesis; modification; MWW framework (en)
http://linked.open.../riv/klicoveSlovo	modification MWW framework synthesis
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[D2413327CE13]
http://linked.open...i/riv/nazevZdroje	Studies in Surface Science and Catalysis
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Bifunctional heterogeneous catalysts for palladium-catalyzed coupling reactions
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	170
http://linked.open...iv/tvurceVysledku	Čejka, Jiří Sommer, L. Bejblová, Martina Pawlesa, Justyna Bouzga, A. M. Stöcker, M.
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0167-2991
number of pages	6 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Synthesis, modification andcharacterization of MWW framework topology materials Synthesis, modification andcharacterization of MWW framework topology materials Synthesis, modification andcharacterization of MWW framework topology materials

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