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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F13%3A00386050%21RIV14-GA0-61388955
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Mesoporous adsorbents for carbon dioxide capture were prepared by introducing of magnesium oxide and potassium carbonate into SBA-15, SBA-16 silicas and MCM-48-like-silica. In order to avoid destruction of silica supports, a novel procedure based on the precipitation of magnesium acetate on the silica surface was developed. Subsequent in situ chemical conversion of magnesium acetate provided magnesium oxalate, while final magnesium oxide was formed by calcination. To introduce potassium carbonate, silica modified with MgO was impregnated with potassium oxalate followed by its conversion to carbonate. All prepared mesoporous adsorbents preserved characteristic features of mesoporous molecular sieve. The comparison of carbon dioxide isotherms obtained on prepared samples reveals that their adsorption properties are decisively influenced by the type of mesoporous structure. Modified sample of SBA-15 silica has shown the most steep adsorption isotherm and higher CO2 adsorption capacity than adsorption capacity of samples prepared from SBA-16 and MCM-48-ls silicas. Mesoporous adsorbents for carbon dioxide capture were prepared by introducing of magnesium oxide and potassium carbonate into SBA-15, SBA-16 silicas and MCM-48-like-silica. In order to avoid destruction of silica supports, a novel procedure based on the precipitation of magnesium acetate on the silica surface was developed. Subsequent in situ chemical conversion of magnesium acetate provided magnesium oxalate, while final magnesium oxide was formed by calcination. To introduce potassium carbonate, silica modified with MgO was impregnated with potassium oxalate followed by its conversion to carbonate. All prepared mesoporous adsorbents preserved characteristic features of mesoporous molecular sieve. The comparison of carbon dioxide isotherms obtained on prepared samples reveals that their adsorption properties are decisively influenced by the type of mesoporous structure. Modified sample of SBA-15 silica has shown the most steep adsorption isotherm and higher CO2 adsorption capacity than adsorption capacity of samples prepared from SBA-16 and MCM-48-ls silicas.
dcterms:title
MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption
skos:prefLabel
MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption
skos:notation
RIV/61388955:_____/13:00386050!RIV14-GA0-61388955
n13:predkladatel
n14:ico%3A61388955
n3:aktivita
n18:P n18:I
n3:aktivity
I, P(GA203/08/0604)
n3:cisloPeriodika
FEB 2013
n3:dodaniDat
n10:2014
n3:domaciTvurceVysledku
n6:2992701 n6:7016662 n6:5283396
n3:druhVysledku
n17:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
88110
n3:idVysledku
RIV/61388955:_____/13:00386050
n3:jazykVysledku
n11:eng
n3:klicovaSlova
mesoporous adsorbents; SBA-15 silica; introducing of MgO and K2CO3
n3:klicoveSlovo
n15:introducing%20of%20MgO%20and%20K2CO3 n15:mesoporous%20adsorbents n15:SBA-15%20silica
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[1B0A33A5B88A]
n3:nazevZdroje
Microporous and Mesoporous Materials
n3:obor
n7:CF
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n16:GA203%2F08%2F0604
n3:rokUplatneniVysledku
n10:2013
n3:svazekPeriodika
167
n3:tvurceVysledku
Pastva, Jakub Čejka, Jiří Zukal, Arnošt
n3:wos
000313840000008
s:issn
1387-1811
s:numberOfPages
7
n19:doi
10.1016/j.micromeso.2012.05.026