Kinetic of Methanol Decomposition on Cu/ZnO/ZrO2 Catalysts

• Autorzy: Grabowski R. , Kozłowska A.
• Języki publikacji: EN

Abstrakty

EN

Interaction of methanol with Cu/ZnO/ZrO2 (with different copper content) has been investigated by gravimetric and TPD methods. The TPD measurements of methanol adsorption on these catalysts show that it forms the complexes of two types. The first complex (I) decomposes at low temperature (453 K) yielding H2 and CO2and second (II) decomposes at the temperature (573 K) giving CO andH2. In the process of the decomposition of the complex (I) takes part water which is adsorbed on the surface of the catalyst and the decomposition of the complexes (II) occurs without participation of adsorbed water. Gravimetric measurements of methanol adsorption show that Cu facilitates adsorption of methanol and that an increase of copper content leads to the changes in the kinetics of methanol adsorption and its decomposition. On the basis of gravimetric measurements a model of methanol adsorption and decomposition on Cu/ZnO/ZrO2 catalyst has been proposed and the rate constants of methanol adsorption (ka) and decomposition with and without participation of water (k1 and k2) have been determined.

Słowa kluczowe

EN

methanol decomposition; methanol adsorption; kinetics model

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2004
• Tom: Vol. 78 / nr 2
• Strony: 287--298
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Grabowski R.

• Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland

autor

Kozłowska A.

• Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland

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