The Characterization of Modified Higher Aliphatic Alcohols-Synthesis Catalysts by EPR and XPS Methods

• Autorzy: Skrzypek D. , Krupa K. , Winiarski A. , Szymanska B.
• Języki publikacji: EN

Abstrakty

EN

Aseries of copper-zinc catalysts for aliphatic alcohols synthesis with a varying amount of additives was prepared by thermal decomposition of metal citrates. The results of catalytic experiments, made in a laboratory high-pressure reactor, showed a good stability and almost constant activity and selectivity during 4 months. In this paper the catalyst before (A) and after (B) reaction is characterized by EPR and X-ray photoelectron spectroscopies. For catalystAthe copper species were identified as isolated Cu2+ ions in a dynamic Jahn-Teller configuration. For the sample B the EPR spectrum is complex and its features are corresponding to: clustered Cu2+ species with dipole-dipole interaction; Fe3+ ions in rhombically distorted symmetry; O2- centres.

Słowa kluczowe

EN

X-ray photoelectron spectroscopy; Cu based catalysts; EPR

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2005
• Tom: Vol. 79 / nr 1
• Strony: 145--153
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Skrzypek D.

• Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

autor

Krupa K.

• Institute of Chemical Engineering, Polish Academy of Sciences, Baltycka 5, 44-100 Gliwice, Poland

autor

Winiarski A.

• Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

autor

Szymanska B.

• Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

Bibliografia

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