About: Synthesis, modification andcharacterization of MWW framework topology materials     Goto   Sponge   NotDistinct   Permalink

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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
http://linked.open...avai/riv/aktivity
  • P(GA104/05/0192), R, Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika
  • -
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 453913
http://linked.open...ai/riv/idVysledku
  • RIV/61388955:_____/07:00085032
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • synthesis; modification; MWW framework (en)
http://linked.open.../riv/klicoveSlovo
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
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
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
issn
  • 0167-2991
number of pages
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