Zero-order rates of the oxidative dehydrogenation of propan-2-ol have been measured with several titanium dioxide catalysts under controlled conditions, where suspension concentration, particle size, rate of energy absorption and the partial pressure of di-oxygen are found to be important reaction variables. Their impact upon the rate has resulted in improvements being proposed to the reaction mechanism and the rate expression. High values of the power absorbed per unit catalyst area lead to a dominance of hole-electron recombination; lower values strongly favouring promotion of the photocatalytic reaction in which the reduction of dissolved di-oxygen is rate controlling.
Research on Chemical Intermediates – Springer Journals
Published: Apr 15, 2009
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