Abstract
Cu-Mg-Al and Cu-Zn-Al catalysts derived from hydrotalcite-like compounds were prepared with 6 wt% of CuO and evaluated in selective oxidation of CO in hydrogen-rich streams. The catalysts were characterized by chemical composition, textural analysis, crystalline structure, basicity and reducibility. The reaction was performed in a continuous fixed-bed reactor with temperature range of 125-300 °C under atmospheric pressure. Both catalysts showed an increasing activity and CO2 selectivity until 200 °C, when the CO conversion started to decrease.
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