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Evaluation of semiconducting sensor materials on the basis of catalytic test reaction |
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| Authors: | Wincenty Turek Agnieszka Krowiak Roman Klimkiewicz |
| Institution: | a Institute of Physical Chemistry and Technology of Polymers, Silesian Technical University, ul. Strzody 9, 44-100 Gliwice, Poland b Institute of Coal Chemistry, Polish Academy of Sciences, Sowinskiego 58, 44-121 Gliwice, Poland c Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, ul. Zygmunta Janiszewskiego 11/17, 50-372 Wroclaw, Poland d W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wroclaw, Poland |
| Abstract: | Oxidative-reductive properties on the acid-base surfaces of the oxide compositions Sn-Ce-Rh-O and Zr-Mg-Y-O, active as catalysts in the ketonization of secondary alcohols were determined based on the isopropanol conversion selectivity. The kinetics of isopropanol conversion was measured in the oxygen-free atmosphere. Activation energies for both directions of conversion (dehydration to propylene and dehydrogenation to acetone) were calculated. The results were compared with the kinetics over SnO2 and ZrO2. Both oxide compositions, Sn-Ce-Rh-O and Zr-Mg-Y-O are oxidative-reductive catalysts containing Lewis acid centers. |
| Keywords: | Isopropanol Dehydration Dehydrogenation Kinetics Zirconium oxide Cerium oxide Tin oxide Lewis acid centers |
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