Study of the Surface Properties of the Hopcalite Modified with Noble Metals

• Autorzy: Rogowski J. , Szynkowska M. I. , Węglińska A. , Wojciechowska E. , Paryjczak T.
• Języki publikacji: EN

Abstrakty

EN

In this work hopcalite-based catalysts, modified with noble metals, have been studied in oxidation of thiophene. It was shown that modified hopcalite displays higher activity for thiophene oxidation relative to commercial hopcalite. Moreover, differences in catalytic activity of hopcalite modified with different metals (Pt, Pd, Au) were observed. To explain these differences in catalyst activity both surface and bulk properties of catalyst were studied with Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS), Scanning Electron Microscopy with Energy Dispersive Spectrometer (SEM-EDS) and X-ray diffraction method (XRD). Au modified hopcalite shows the lowest activity for oxidation of thiophene. Obtained images of catalyst surfaces indicate that lowest Au modified catalysts activity is accompanied by pronounced non-homogeneous distribution of Au atoms on the catalyst surface.

Słowa kluczowe

EN

catalytic oxidation; hopcalite; odour gases

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 12
• Strony: 2359--2366
• Opis fizyczny: Bibliogr. 28 poz., rys.

Twórcy

autor

Rogowski J.

autor

Szynkowska M. I.

autor

Węglińska A.

autor

Wojciechowska E.

autor

Paryjczak T.

• Institute of General and Ecological Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Łódź, Poland, fax: [phone],

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