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FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F07%3A00005913" target="_blank" >RIV/00216275:25310/07:00005913 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions

  • Original language description

    The interaction of CO with extraframework Li+ ions coordinated in ZSM-5 and FER zeolites with different compositions is investigated by FTIR spectroscopy, and the correlation between Li+ coordination, stability of CO adsorption complexes, and nu(CO) frequencies is discussed in terms of the theoretical investigation of the stability and vibrational dynamics of CO adsorption complexes. Differences in IR spectra of adsorbed CO due to the following effects were considered: (i) various Si/Al ratios, ( ii) differences in zeolite topology, ( iii) temperature, and ( iv) the effect of a co-cation on relative stability and metal cation site preferences. The correlation between Li+ coordination and nu(CO) frequencies of CO adsorption complexes discussed for Li zeolites is extrapolated to mesoporous Li-(Al) MCM-41 materials. The features in the IR spectra of CO/Li-(Al)MCM- 41 are assigned to CO adsorption complexes formed on top of five- and six-membered rings on the surface of a channel wall. The

  • Czech name

    IČ a teoretická studie interakce CO s Li+ ionty v mikro a mesoporézních matricích: koordinace a lokalizace Li+ iontů

  • Czech description

    Interakce CO s mimomřížkovými Li+ ionty koordinovanými v ZSM-5 a FER zeolitech s různým složením byla zkoumána a vztah mezi Li+ koordinací, stabilitou a frekvencí vibrace karbonylových komplexů byl diskutován spolu s teoretickým výzkumy stability a vibrační dynamiky. Rozdíly ve spektrech byly zkoumány vzhledem k (i) různému Si/Al, (ii) rozdílné struktuře zeolitu, (iii) teplotě , (iv) typu ko-kationtu. Získané korelace mezi koordinací a frekvencí vibrací karbonylových komplexů byly extrapolovány do mesoporézních materiálů Li-(Al) MCM-41. Spektrální pásy byly přiřazeny k COLi+ komplexům na vrcholu 5- a 6-člených kruhů na povrchu stěn kanálů.

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

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

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

    Journal of Physical Chemistry Part C: Nanomaterials and Interfaces

  • ISSN

    1932-7447

  • e-ISSN

  • Volume of the periodical

    111

  • Issue of the periodical within the volume

    N

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    11353-11362

  • UT code for WoS article

  • EID of the result in the Scopus database