Method for preparing zeolite film by grinding and coating crystal seed layer

Method for preparing zeolite film by grinding and coating crystal seed layer

  • CN 1,879,952 A
  • Filed: 12/30/2005
  • Published: 12/20/2006
  • Est. Priority Date: 12/30/2005
  • Status: Active Application
First Claim
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1. method for preparing zeolite film by grinding and coating crystal seed layer is characterized in that:

  • 1) Na 2O;

    SiO 2;

    Al 2O 3;

    H 2O;

    the lamina membranacea agent=(2-3.5);

    (25-50);

    1;

    (800-1600);

    mol ratio preparation gel (8-17.5), put into the stainless steel still of poly-tetrafluoro lining, took out after constant temperature 45-60 under 160-180 ℃

    the temperature hour the sealing back, washing, drying obtains the micron order zeolite grain;

    2) zeolite grain with gained is prepared into nanometer or submicron crystallite suspension through grinding, washing, be scattered in ethanol or the acetone,? Al 2O 3On earthenware or stainless steel or the charcoal prop carrier, coat crystal seed layer with czochralski method on prop carrier, after the drying, under 350-400 ℃

    , roasting was solidified in 3 hours;

    3) with Na 2O;

    SiO 2;

    Al 2O 3;

    H 2O;

    the lamina membranacea agent=(5.3-8);

    (25-50);

    1;

    (2000-4500);

    mol ratio preparation preparation zeolite membrane gel (28.5-50), the carrier that scribbles crystal seed layer is put into the withstand voltage still of stainless steel of poly-tetrafluoro lining, inject this gel with the carrier submergence, still is sealed;

    Placed under 160-180 ℃

    the temperature 40-60 hour.

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