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Statements

Subject Item
n2:RIV%2F67985858%3A_____%2F06%3A00055169%21RIV07-AV0-67985858
rdf:type
n11:Vysledek skos:Concept
dcterms:description
For the comparative study focused on comparison of models for evaluation of pore-size distributions (PSD) from nitrogen physical adsorption isotherms (at 77 K) a series of controlled pore glasses (CPG10) with wide range of nominal pore sizes was used. The absence of micropores in CPG10 samples was proved by comparing adsorption isotherms at low relative pressures, x. This permitted construction of the dependence of adsorbed film thickness, t, on x [t(x)] commonly used in evaluation of textural properties of porous samples. 15 models for cylindrical pore geometry based on the Barret, Joyner and Halenda (BJH) and Broekhoff and deBoer (BdB) approaches with different t(x) dependencies and two evaluation algorithms were compared. Additionally a model which is based on modified non-local density functional theory with density-dependent weights and Tarazona prescription (NLDFT) was applied. For the comparative study focused on comparison of models for evaluation of pore-size distributions (PSD) from nitrogen physical adsorption isotherms (at 77 K) a series of controlled pore glasses (CPG10) with wide range of nominal pore sizes was used. The absence of micropores in CPG10 samples was proved by comparing adsorption isotherms at low relative pressures, x. This permitted construction of the dependence of adsorbed film thickness, t, on x [t(x)] commonly used in evaluation of textural properties of porous samples. 15 models for cylindrical pore geometry based on the Barret, Joyner and Halenda (BJH) and Broekhoff and deBoer (BdB) approaches with different t(x) dependencies and two evaluation algorithms were compared. Additionally a model which is based on modified non-local density functional theory with density-dependent weights and Tarazona prescription (NLDFT) was applied. Tato srovnávací studie se zaměřila na porovnání a vyhodnocení distribuce porů (PSD) z fyzikálních adsorpčních izoterem (adsorpce dusíku při 77 K) na sérii porézních skel, s širokým rozsahem mikroporů. Absence mikroporů ve vzorcích CPG10 byla prokázána porovnáním adsorpčních izoterem za nízkých relativních tlaků, x. Uvedená interpretace závislosti tlouštky adsorbovaného filmu, t, na x [t(x)] se obvykle používá k vyhodnocení texturních vlastností porézních vzorků. 15 modelů pro válcové pory založených na BJH (Barrett, Joyner, Halenda) a BdB (Broekhoff, deBoer) s různou závislostí t (x) bylo spočítáno podle dvou algoritmů a porovnáno. Navíc byl aplikován model založený na nelineární teorii hustotního potenciálu s vyhodnocením odchylky hustot a Tarazona řešení (NLDFT).
dcterms:title
Distribuce porů z adsorpce dusíku; srovnání modelů na porézních sklech Pore-size Distributions from Nitrogen Adsorption Revisited: Models Comparison with Controlled-pore Glasses Pore-size Distributions from Nitrogen Adsorption Revisited: Models Comparison with Controlled-pore Glasses
skos:prefLabel
Pore-size Distributions from Nitrogen Adsorption Revisited: Models Comparison with Controlled-pore Glasses Distribuce porů z adsorpce dusíku; srovnání modelů na porézních sklech Pore-size Distributions from Nitrogen Adsorption Revisited: Models Comparison with Controlled-pore Glasses
skos:notation
RIV/67985858:_____/06:00055169!RIV07-AV0-67985858
n4:strany
167;176
n4:aktivita
n5:P n5:Z
n4:aktivity
P(GA104/04/2116), P(GD203/03/H140), P(IAA4072404), Z(AV0Z40720504)
n4:cisloPeriodika
2
n4:dodaniDat
n14:2007
n4:domaciTvurceVysledku
n13:9345531 n13:5916887 n13:2983141
n4:druhVysledku
n8:J
n4:duvernostUdaju
n17:S
n4:entitaPredkladatele
n9:predkladatel
n4:idSjednocenehoVysledku
492990
n4:idVysledku
RIV/67985858:_____/06:00055169
n4:jazykVysledku
n12:eng
n4:klicovaSlova
pore size distribution; physical adsorption; standard nitrogen isotherm
n4:klicoveSlovo
n16:standard%20nitrogen%20isotherm n16:physical%20adsorption n16:pore%20size%20distribution
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[3B043E7798EC]
n4:nazevZdroje
Applied Catalysis A - General
n4:obor
n10:CF
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n15:GD203%2F03%2FH140 n15:GA104%2F04%2F2116 n15:IAA4072404
n4:rokUplatneniVysledku
n14:2006
n4:svazekPeriodika
313
n4:tvurceVysledku
Matějová, Lenka Schneider, Petr Šolcová, Olga
n4:zamer
n18:AV0Z40720504
s:issn
0926-860X
s:numberOfPages
10