Methanol Partial Oxidation over Commercial CuO-ZnO-Al2O3 Catalysts

CuO-ZnO-Al2O3 상업용 촉매에서의 메탄올 부분산화반응

  • Published : 2002.06.15

Abstract

The methanol partial oxidation using commercial $CuO/ZnO/Al_2O_3$ catalysts in a plug flow reactor was studied in the temperature range of $200{\sim}250^{\circ}C$ at atmospheric pressure, It was achieved the high activities by Cu-based catalysts and the selectivity of $CO_2$/$H_2$ was 100% when $O_2$ was fully convened. The reactivity changes and their hysteresis with increasing/decreasing temperatures were observed due to the chemical state differences between the oxidation and the reduction on the Cu surface, It was suggested as the two-step reaction: the complete oxidation and the following steam reforming for methanol, which was indicated by the distributions of final products vs. the residence time. In addition, the complete oxidation step was shown to be extremely fast and the total reaction rate can be controlled by the steam reforming reaction.

Keywords

Methanol partial oxidation;Cu-based catalyst;Complete oxidation;Steam reforming;Hysteresis;Selectivity

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