Method for synthesizing granular beta molecular sieve with montmorillonoid

Method for synthesizing granular beta molecular sieve with montmorillonoid

  • CN 101,723,398 A
  • Filed: 10/28/2008
  • Published: 06/09/2010
  • Est. Priority Date: 10/28/2008
  • Status: Active Application
First Claim
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1. a method for preparing the small-particle beta-molecular sieve provides to small part aluminium source with polynite, and by adding template, and hydrothermal crystallizing and realizing comprises following process:

  • (1) polynite of activation treatment being placed concentration is the template solution of 10~

    50wt%, ℃

    soaks 1h~

    50h down in room temperature~

    90;

    (2) obtain adding the silicon source in the material, replenishing aluminium source, alkali, water, promotor and template to step (1), ℃

    stirring down in room temperature~

    90, mix, and it is concentrated with mixture to continue heated and stirred, be mixed with gel, concentration time is 1h~

    8h, and the mole proportioning of each component in this gel is satisfied;

    SiO 2/Al 2O 3

    10~

    400 (TEA) 2O/SiO 2

    0.05~

    2 M 2O/SiO 2

    0.02~

    0.6 H 2O/SiO 2

    12~

    25 Wherein M represents alkali metallic sodium and/or potassium;

    (3) with this gel at 130~

    160 ℃

    of following hydrothermal crystallizing 20h~

    200h.

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