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- W2364821750 abstract "The Au/Al_2O_3 catalyst was prepared by anionic impregnation with HAuCl_4 solution.The effects of pH value of the solution and washing treatment on CO oxidation were studied.The CO oxidation reactivity at room temperature increased with the pH value of the solution.The catalyst reduced in H_2 at 300 ℃,whether steeping in H_2O or NH_3·H_2O,showed high activity and good stability.For the catalyst calcined in air at 300 ℃,steeping in NH_3·H_2O retained high activity but steeping in H_2O made the activity decrease rapidly.XPS was employed to determine the surface composition of the catalyst.The catalyst surface contained Al,O,C,N,Na and Au atoms.However,no Cl atoms were present on the surface of the catalyst steeped by NH_3·H_2O,indicating that the treatment could effectively eliminate Cl~-ions and improve the catalyst activity." @default.
- W2364821750 created "2016-06-24" @default.
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- W2364821750 date "2005-01-01" @default.
- W2364821750 modified "2023-09-25" @default.
- W2364821750 title "Influence of Gold Solution pH Value and Steeping Treatment on CO Oxidation Reactivity over Au/Al_2O_3 Catalyst" @default.
- W2364821750 hasPublicationYear "2005" @default.
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