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Synthesis and adsorption investigations of zeolites MCM-22 and MCM-49 modified by alkali metal cations

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F07%3A00092685" target="_blank" >RIV/61388955:_____/07:00092685 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Synthesis and adsorption investigations of zeolites MCM-22 and MCM-49 modified by alkali metal cations

  • Original language description

    Ion exchange was made on MCM-22 and MCM-49 zeolites with different Si/Al molar ratios, with Li+, Na+, K+, and Cs+ ions and the study of the influence of alkali metal cations on CO2 adsorption properties was performed. The degree of ion-exchange decreasedfor larger cations (Cs+) apparently due to steric hindrances. The exchange with different cations led to a decrease in the surface area and the micropore volume. Our study shows that the adsorption capacity of the tested zeolites depends significantly on the nature and the concentration of the charge-compensating cations. The highest CO2 adsorption capacity was obtained on the MWW zeolites with the lowest Si/Al molar ratio and the Li+ or K+ cations.

  • Czech name

    Syntéza a adsorpční vlastnosti zeolitů MCM-22 a MCM-49 modifikovaných kationty alkalických kovů

  • Czech description

    Adsorpce oxidu uhličitého byla studována na zeolitech MCM-22 a MCM-49 s kationty Li+, Na+, K+ a Cs+. U objemných kationtů (Cs) byl v důsledku sterických zábran stupeň iontové výměny snížen. Iontová výměna vedla ke snížení plochy povrchu a objemu mikropórů. Provedená studie ukázala, že adsorpční kapacita významně závisí na povaze a koncentraci kationtů. Nejvyšší adsorpční kapacita pro CO2 byla nalezena u MWW zeolitů s nejnižším poměrem Si/Al a s Li+ nebo K+ kationty.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)<br>R - Projekt Ramcoveho programu EK

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Adsorption-Journal of the International Adsorption Society

  • ISSN

    0929-5607

  • e-ISSN

  • Volume of the periodical

    13

  • Issue of the periodical within the volume

    3-4

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    9

  • Pages from-to

    257-265

  • UT code for WoS article

  • EID of the result in the Scopus database