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Description
| - Texturní charakteristiky katalyzátorů pro fluidní krakování byly vyhodnoceny z měření adsorpce N2 a rtuťové porozimetrie. V ložích částic FCC katalyzátorů byla nalezena a kvantitativně určena hierarchie dutin ve čtyřech úrovních velikosti. Difúzní koeficienty n-oktanu v částici byly měřeny PFG NMR technikou v loži katalyzátorů. Difúzní koeficienty vykazují lineární závislost na parametru .xi., který zahrnuje střední hodnotu poloměru póru v příslušné oblasti porozity a funkci příslušné porozity. Byla nalezena také silná lineární korelace mezi parametrem .xi. pro makropóry a mezopóry. Střední velikosti makro- a mezopórů se tak stávají klíčovým parametrem pro naladění vlastností FCC katalyzátorů. (cs)
- Texture characteristics of fluid catalytic cracking (FCC) catalysts were evaluated from N2 adsorption and mercury porosimetry measurements. A hierarchy of four levels of voids were found and quantified in the beds of FCC particles. Diffusion coefficients of intraparticle diffusion for n-octane were measured in the catalyst beds by PFG NMR technique. The diffusion coefficients exhibit a linear dependence on parameters .xi. that involve the mean value of the pore radii r in the pertinent porosity region and a function of the corresponding porosity. A strong linear correlation was also found between the parameter .xi. for macropores and that for mesopores. The mean sizes of macro- and mesopores thus become key parameters in tuning the FCC catalyst properties.
- Texture characteristics of fluid catalytic cracking (FCC) catalysts were evaluated from N2 adsorption and mercury porosimetry measurements. A hierarchy of four levels of voids were found and quantified in the beds of FCC particles. Diffusion coefficients of intraparticle diffusion for n-octane were measured in the catalyst beds by PFG NMR technique. The diffusion coefficients exhibit a linear dependence on parameters .xi. that involve the mean value of the pore radii r in the pertinent porosity region and a function of the corresponding porosity. A strong linear correlation was also found between the parameter .xi. for macropores and that for mesopores. The mean sizes of macro- and mesopores thus become key parameters in tuning the FCC catalyst properties. (en)
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Title
| - Transport-related structure characteristics of FCC catalysts from sorption, porosimetric and PFG NMR measurements
- Strukturní a transportní charakteristiky FCC katalyzátorů vyhodnocené ze sorpčních, porozimetrických a PFG měření (cs)
- Transport-related structure characteristics of FCC catalysts from sorption, porosimetric and PFG NMR measurements (en)
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skos:prefLabel
| - Transport-related structure characteristics of FCC catalysts from sorption, porosimetric and PFG NMR measurements
- Strukturní a transportní charakteristiky FCC katalyzátorů vyhodnocené ze sorpčních, porozimetrických a PFG měření (cs)
- Transport-related structure characteristics of FCC catalysts from sorption, porosimetric and PFG NMR measurements (en)
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skos:notation
| - RIV/61388955:_____/05:00001176!RIV06-AV0-61388955
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/05:00001176
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - FCC catalysts; PFG NMR technique; SEM image (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...v/mistoKonaniAkce
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http://linked.open...i/riv/mistoVydani
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http://linked.open...i/riv/nazevZdroje
| - Molecular Sieves: From Basic Research to Industrial Applications
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
| - Šolcová, Olga
- Kočiřík, Milan
- Zikánová, Arlette
- Jirglová, Hana
- Bernauer, B.
- Vasenkov, S.
- Kärger, J.
- Krystl, V.
- Drescher, B.
- Kortunov, P.
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http://linked.open...vavai/riv/typAkce
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http://linked.open.../riv/zahajeniAkce
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http://linked.open...n/vavai/riv/zamer
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number of pages
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http://purl.org/ne...btex#hasPublisher
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https://schema.org/isbn
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is http://linked.open...avai/riv/vysledek
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