About: Adsorption and pore condensation of krypton on mesoporous silicas at 77 K     Goto   Sponge   NotDistinct   Permalink

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  • The adsorption and pore condensation behavior of krypton was studied on the series of well-defined mesoporous silicas (mode pore diameter 2.6-2.0 nm) and one sample of disordered mesoporous silica (mode pore diameter 7.5 nm) at 77 K. The similar adsorption measurement was carried out on non-porous Davisil. The results show clearly that the pore condensation of krypton occurs only in mesopores whose diamter does not exceed 6 nm. The krypton pore condensation vanishes in larger mesopores, which limits information obtainable from the isotherm. This phenomenon can be explained on the basis of Broekhoff and de Boer thermodynamic theory of capillary condensation.
  • The adsorption and pore condensation behavior of krypton was studied on the series of well-defined mesoporous silicas (mode pore diameter 2.6-2.0 nm) and one sample of disordered mesoporous silica (mode pore diameter 7.5 nm) at 77 K. The similar adsorption measurement was carried out on non-porous Davisil. The results show clearly that the pore condensation of krypton occurs only in mesopores whose diamter does not exceed 6 nm. The krypton pore condensation vanishes in larger mesopores, which limits information obtainable from the isotherm. This phenomenon can be explained on the basis of Broekhoff and de Boer thermodynamic theory of capillary condensation. (en)
  • Byla studována adsorpce a kondenzace kryptonu při teplotě 77 K v pórech uspořádaných mesoporézních silikátových materiálů (velikost pórů 2,6 až do 6,0 nm) a v pórech neuspořádaného silikátového materiálu (střední velikost pórů 7,5 nm). Táž měření byla provedena na neporézním silikátu Davisil. Ze provedených měření vyplynulo, že kryptonem se objemově zaplňují pouze mesopóry, jejich průměr nepřevyšuje 6 nm. Ve větších mesopórech kondenzace kryptonu nenastává, což omezuje informace, jež mohou být z izotermy získány. Pozorované jevy byly vysvětleny pomocí termodynamické teorie kapilární kondenzace navržené Broekhoffem a de Boerem. (cs)
Title
  • Adsorption and pore condensation of krypton on mesoporous silicas at 77 K
  • Adsorpce a kondenzace kryptonu v pórech mesoporézních silikátů při teplotě 77 K (cs)
  • Adsorption and pore condensation of krypton on mesoporous silicas at 77 K (en)
skos:prefLabel
  • Adsorption and pore condensation of krypton on mesoporous silicas at 77 K
  • Adsorpce a kondenzace kryptonu v pórech mesoporézních silikátů při teplotě 77 K (cs)
  • Adsorption and pore condensation of krypton on mesoporous silicas at 77 K (en)
skos:notation
  • RIV/61388955:_____/06:00039029!RIV07-AV0-61388955
http://linked.open.../vavai/riv/strany
  • 220;226
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(FT-TA/040), P(GA203/05/0197), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika
  • 1-3
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
  • 464210
http://linked.open...ai/riv/idVysledku
  • RIV/61388955:_____/06:00039029
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • adsorption of krypton at 77 K; capillary condensation; stability condition; restriction of mesopore filling (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [80582C31B1F8]
http://linked.open...i/riv/nazevZdroje
  • Microporous and Mesoporous Materials
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
  • 92
http://linked.open...iv/tvurceVysledku
  • Zukal, Arnošt
http://linked.open...n/vavai/riv/zamer
issn
  • 1387-1811
number of pages
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