Abstract
Abstract A LDH confined Au nano-catalyst has been successfully synthesized through a flocculation and in-situ reduction method. In this composite, Au nano-colloids were evenly dispersed in LDH gallery and its particle size was less than 1 nm. The highly dispersed gold nano-colloids in layered Mg―Al double hydroxide support were found to be a high performance catalyst for CO lower temperature oxidation. The catalytic experiments indicated that the CO oxidation reaction could be initiated at lower than − 30 °C and almost a 100% conversion can be achieved at 0 °C. The catalyst stability studies show that after 12 h reaction at 0 °C; the CO conversion has not any apparent decrease.
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