About: MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption

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About: MgO-modified mesoporous silicas impregnated by potassium carbonate for carbon dioxide adsorption Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. (en)
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 (en)
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 (en)
skos:notation	RIV/61388955:_____/13:00386050!RIV14-GA0-61388955
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA203/08/0604)
http://linked.open...iv/cisloPeriodika	FEB 2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Pastva, Jakub Zukal, Arnošt Čejka, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	88110
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/13:00386050
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mesoporous adsorbents; SBA-15 silica; introducing of MgO and K2CO3 (en)
http://linked.open.../riv/klicoveSlovo	SBA-15 silica introducing of MgO and K2CO3 mesoporous adsorbents
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[1B0A33A5B88A]
http://linked.open...i/riv/nazevZdroje	Microporous and Mesoporous Materials
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced molecular sieves for capture and storage of CO2 and H2
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	167
http://linked.open...iv/tvurceVysledku	Zukal, Arnošt Čejka, Jiří Pastva, Jakub
http://linked.open...ain/vavai/riv/wos	000313840000008
issn	1387-1811
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.micromeso.2012.05.026

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