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FTIR study of methanol, formaldehyde and methyl formate adsorption on the surface of Mo/ Sn oxide catalyst

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004394" target="_blank" >RIV/00216275:25310/06:00004394 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    FTIR study of methanol, formaldehyde and methyl formate adsorption on the surface of Mo/ Sn oxide catalyst

  • Original language description

    The FTIR spectra of the surface species arising from the adsorption of methanol, formaldehyde and methyl formate on mixed molybdenum-stannic oxide with Mo / (Mo + Sn) = 0.1 are discussed. Methanol is adsorbed mainly in the undissociated form due to hydrogen bond on a cation-anion couple with basic character. Methoxy complex is oxidized to a bidendate formate near 473 K. Hydrogen-bonded H2CO, coordinatively bonded H2CO, bidendate formate and polymer species are observed during the adsorption of formaldehyde at pressure 1.5 kPa. Methyl formate is adsorbed in the form of hydrogen-bonded HCOOCH3, HCOOCH3 coordinatively bonded, methoxy complex and bidentate formate. In contrast to MoO3-SnO2 catalyst with molar ratio Mo / (Mo + Sn) = 0.3, formates are more stable up to 473 K. This can be explained by the contribution of Sn ions during their interaction with CH3OH, H2CO and HCOOCH3.

  • Czech name

    FTIR studie adsorpce methanolu, formaldehydu a methylformiátu na povrchu Mo/Sn oxidového katalyzátoru

  • Czech description

    Byla studována Ič spektra povrchových komplexů vznikajících při adsorpci metanolu, formaldehydu a metylesteru kyseliny mravenčí na Mo/Sn oxidovém katalyzátoru. Metanol je adsorbován převážně v nedisociované formě díky vodíkové vazbě na bazickém aktivnímcentru. Při adsorpci metanolu, formaldehydu a metylesteru kyseliny mravenčí vznikají tyto povrchové sloučeniny: methoxy komplex, formiát, nedisociovaný formaldehyd a metylester kyseliny mravenčí. Bylo zjištěno,že formiát je mnohem více stabilní (až do teploty 473 K) na vzorcích s nižším obsahem molybdenu. Tento jev může být způsoben strukturou a umístěním Sn iontů při jejich interakci s adsorbovanou látkou.

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)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Applied catalysis A-General

  • ISSN

    0926-860X

  • e-ISSN

  • Volume of the periodical

  • Issue of the periodical within the volume

    309

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    4

  • Pages from-to

    33-35

  • UT code for WoS article

  • EID of the result in the Scopus database