Phase Study on Nonstoichiometric Cu_2-xS Compound Prepared by Precipitation Transformation AITranslate

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Chinese Library Classification Number:TQ131.21[化学工程—无机化工]

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CuSO4was reduced by precipitation transformation with C6H12O6 under alkaline conditions to obtain brick red Cu_2 O.And then Cu_2 O was transformed into Cu_2 S with Na2 S as the vulcanizing agent.Cu_2 S was calcined at different temperatures to prepare nonstoichiometric Cu_2-xS compound.Phase and morphology of Cu_2 S and Cu2-xS were analyzed by XRD and SEM,respectively.The results show that phase transition of Cu_2-xS happens at different temperatures.The molar ratio of Cu to S increases with the increase of roasting temperature.And Cu2-xS exists steadily in the form of Cu_2 S when the sintering temperature is up to 700 ℃.