Selective Oxidation of CO Over Cu Catalysts Prepared from Hydrotalcite-Like Precursors

Raquel Massad Cavalcante; Fernando Luiz Pellegrini Pessoa; Mariana de Mattos Vieira Mello Souza

doi:10.15866/ireche.v6i5.3071

Selective Oxidation of CO Over Cu Catalysts Prepared from Hydrotalcite-Like Precursors

Raquel Massad Cavalcante^(1*), Fernando Luiz Pellegrini Pessoa⁽²⁾, Mariana de Mattos Vieira Mello Souza⁽³⁾

^(*) Corresponding author

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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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Keywords

Selective Oxidation; Copper; Hydrotalcite; Zinc; Magnesium

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