Novel preparation method of amorphous alloy catalyst

Novel preparation method of amorphous alloy catalyst

  • CN 101,007,281 A
  • Filed: 01/26/2007
  • Published: 08/01/2007
  • Est. Priority Date: 01/26/2007
  • Status: Active Application
First Claim
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1. a new method for preparing amorphous alloy catalyst is:

  • comprise non-loading type or support type, alloy cluster is of a size of 10~

    100nm in the described amorphous alloy catalyst, active component is NiB, CoB or NiCoB, adds metal (accounting for catalyst weight 0.1~

    2%) Pt, Pd, Ag or Au.Wherein Ni accounts for the weight 10%~

    97% of catalyst;

    Co accounts for the weight 10%~

    97% of catalyst;

    Co;

    Ni=0~

    1, atomic ratio;

    B;

    Ni=1.0~

    4.0, atomic ratio.The carrier of described carried non-crystal alloy catalyst is;

    TiO 2, Al 2O 3, SiO 2, MgO, SBA-15, polyvinylpyrrolidone (PVP) or polyvinyl alcohol (PEG). Concrete steps are as follows;

    The preparation method of described amorphous alloy catalyst comprises the steps;

    (1) preparation of NiB amorphous alloy;

    Soluble nickel salt is dissolved in (nickel concentration is 0.01~

    1mol/L in ethylenediamine, citrate or the tartrate solution, Ni;

    ethylenediamine, Ni;

    citrate, Ni;

    tartrate=0.5~

    2.0, atomic ratio), dripping NaOH solution control pH then is 12.0~

    13.9, adds KBH 4Solution (B;

    Ni=1.0~

    4.0, atomic ratio), at 25~

    90 ℃

    of salting liquids (it is 0.1~

    2% that metal accounts for catalyst weight) that add Pt, Pd, Ag or Au down, stirring reaction is to there not being bubble to generate;

    Ni accounts for 85~

    97% of weight in the catalyst.Preparation support type NiB amorphous alloy then is to add KBH 4Behind the solution, add a certain amount of support powder and stir, and then at 25~

    90 ℃

    of salting liquids that add Pt, Pd, Ag or Au down, stirring reaction is not to there being bubble to generate, carrier accounts for catalyst weight 0~

    90%.After catalyst detergent becomes neutrality, can be kept in the water, also can be kept in the ethanol. (2) preparation of CoB amorphous alloy;

    The solubility cobalt salt is dissolved in (cobalt concentration is 0.01~

    1mol/L, Co;

    tartrate, Co;

    citrate=0.1~

    2.0, atomic ratio) in citrate or the tartrate solution, and dripping NaOH solution control pH then is 13.0~

    13.9, adds KBH 4Solution (B;

    Co=1.0~

    4.0, atomic ratio), at 25~

    90 ℃

    of salting liquids (it is 0.1~

    2% that metal accounts for catalyst weight) that add Pt, Pd, Ag or Au down, stirring reaction is to there not being bubble to generate;

    Co accounts for 85~

    97% of weight in the catalyst.Preparation load type Co B amorphous alloy then is to add KBH 4Behind the solution, add a certain amount of support powder and stir, and then at 25~

    90 ℃

    of salting liquids that add Pt, Pd, Ag, Ni or Au down, stirring reaction is not to there being bubble to generate, carrier accounts for catalyst weight 0~

    90%.After catalyst detergent becomes neutrality, can be kept in the water, also can be kept in the ethanol. (3) preparation of NiCoB amorphous alloy;

    Soluble nickel salt is dissolved in (nickel concentration is 0.01~

    1mol/L in the ethylenediamine solution, Ni;

    ethylenediamine=0.5~

    2.0, atomic ratio), tartrate solution (the Co;

    tartrate=0.1~

    2.0 that adds a certain amount of cobalt then, atomic ratio), control Co;

    Ni=0~

    1 (atomic ratio), dripping NaOH solution control pH is 12.5~

    13.9, adds KBH 4Solution (B;

    (Ni+Co)=1.0~

    4.0, atomic ratio), at 25~

    90 ℃

    of salting liquids (it is 0.1~

    2% that metal accounts for catalyst weight) that add Pt, Pd, Ag or Au down, stirring reaction is to there not being bubble to generate;

    Preparation support type NiCoB amorphous alloy then is to add KBH 4Behind the solution, add a certain amount of support powder and stir, and then at 25~

    90 ℃

    of salting liquids that add Pt, Pd, Ag or Au down, stirring reaction is not to there being bubble to generate, carrier accounts for catalyst weight 0~

    90%.After catalyst detergent becomes neutrality, can be kept in the water, also can be kept in the ethanol.

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