The preparation method of phosphorus heteropoly tungstic acid

The preparation method of phosphorus heteropoly tungstic acid

  • CN 102,744,088 B
  • Filed: 04/20/2011
  • Issued: 08/03/2016
  • Est. Priority Date: 04/20/2011
  • Status: Active Grant
First Claim
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1. a preparation method for phosphorus heteropoly tungstic acid, comprises the following steps:

  • A) by soluble in water to sodium tungstate and disodium hydrogen phosphate, under heating and acid condition, the mixed of phosphotungstic acid and Sodium phosphotungstate is generatedClose solution;

    Wherein sodium tungstate is 1;

    0.1~

    1;

    10 with the weight ratio of disodium hydrogen phosphate;

    B) by CnH2n+1N+Cl-It is dissolved in organic solvent, obtains CnH2n+1N+Cl-Organic solution;

    Wherein, n is 10~

    30Positive integer;

    On the basis of sodium tungstate addition, CnH2n+1N+Cl-Addition be 0.01~

    1 moles per gram sodium tungstate;

    C) by CnH2n+1N+Cl-Organic solution add in the mixed solution of phosphotungstic acid and Sodium phosphotungstate, after reaction, product warpIt is centrifuged, washs, is dried and roasting, obtain phosphorus heteropoly tungstic acid;

    At least one in dichloromethane, chloroform, chloroform, acetone, acetonitrile or ethanol of described organic solvent;

    InstituteThe phosphorus heteropoly tungstic acid stated is the phosphorus heteropoly tungstic acid of structure with Keggin.

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