The effects of ultrasound on chromium gels in light of their catalytic activity and electron paramagnetic resonance |
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Authors: | E Kowalska M Dziegielewska |
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Institution: | Silesian Technical University Gliwice, Poland |
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Abstract: | Investigations into the influence of ultrasound on the catalytical properties of chromium gels are presented. The changes of the EPR spectra and surface concentration of Cr on the sixth oxidation degree of certain preparations are described. These changes are then related to the increase in the velocity in the test reaction of H2O2 decomposition and the increased yield of cyclohexane dehydrogenation when the insonated preparations are used as catalysts. |
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