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Alkali metal cation doped Al-SBA-15 for carbon dioxide adsorption
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SYSNO ASEP 0356990 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Alkali metal cation doped Al-SBA-15 for carbon dioxide adsorption Author(s) Zukal, Arnošt (UFCH-W) RID
Mayerová, Jana (UFCH-W)
Čejka, Jiří (UFCH-W) RID, ORCID, SAISource Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 12, č. 20 (2010), s. 5240-5247Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords mesoporous molecular sieves ; zeolites ; CO2 adsorption Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/08/0604 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000277689500007 DOI 10.1039/b924938a Annotation Mesoporous aluminosilicate adsorbents for carbon dioxide were prepared by the grafting of aluminium into SBA-15 silica using an aqueous solution of aluminium chlorohydrate. As the ion exchange sites are primarily associated with the presence of tetrahedrally coordinated aluminium, extra-framework aluminium on the SBA-15 surface was inserted into the silica matrix by a treatment with an aqueous solution of NH4OH. Synthesized mesoporous aluminosilicate preserving all the characteristic features of a mesoporous molecular sieve was finally modified by the alkali metal cation exchange. To examine carbon dioxide adsorption on prepared materials, adsorption isotherms in the temperature range from 0 degrees C to 60 degrees C were measured. Based on the known temperature dependence of adsorption isotherms, isosteric adsorption heats giving information on the surface energetics of CO2 adsorption were calculated and discussed. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
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