Abstract
Preferential oxidation (PROX) of 1 vol% CO was investigated using the stoichiometric amount of O 2 in excess hydrogen. Cobalt supported on alkali earth metal carbonate, especially Co/SrCO 3, showed high selectivity to PROX of CO while the assistance of methanation of CO was necessary to achieve over 99% conversion of CO. Cobalt loading and preparation conditions of Co/SrCO 3 was optimized by using a full factorial design of experiment, an artificial neural network and a grid search. Over 99% O 2 conversion and 78% selectivity for PROX at 200 °C was achieved by 3.2 mol% Co/SrCO 3 pretreated at 345 °C.
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