PREPARATION OF Co AND Dy MODIFIED γ-Al2O3 BY COMBUSTION METHOD

Abstract

Abstract: Co and Dy modified γ-Al₂O₃ was successfully prepared by using aluminum nitrate and glycine as raw materials，and cobalt nitrate and dysprosium nitrate as modifiers. XRD，N₂ adsorption-desorption and SEM were used to characterize the products. The effects of the molar ratio of the modifier，calcination temperature and calcination time on the morphology of the products were investigated. The results showed that the optimum technological conditions for preparing Co and Dy modified γ-Al₂O₃ were n(cobalt nitrate)︰n(dysprosium nitrate)︰n(aluminum nitrate)= 0.02:0.01:1，a calcination temperature of 1 000 ℃，a calcination time of 3 h.

Key words: combustion method, cobalt, dysprosium, modified γ-Al₂O₃

References

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PREPARATION OF Co AND Dy MODIFIED γ-Al₂O₃ BY COMBUSTION METHOD

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