A kind of Beta molecular sieves and preparation method thereof with multi-stage artery structure

A kind of Beta molecular sieves and preparation method thereof with multi-stage artery structure

  • CN 104,418,348 B
  • Filed: 03/21/2014
  • Issued: 11/02/2018
  • Est. Priority Date: 08/20/2013
  • Status: Active Grant
First Claim
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1. a kind of Beta molecular sieves, which is characterized in that there is the substance containing following structural unit in molecular sieve pore passage:

  • Wherein, n is positive integer;

    Its synthetic method is as follows:

    It will be by silicon source, silicon source, polyquaternium P, water and alkali sourceManufactured initial gel mixture, crystallization prepares Beta molecular sieves under 120~179 DEG C of hydrothermal conditions;

    Wherein, polyquaternium PAs structure directing agent, the polyquaternium P is selected from polyquaternium -6, polyquaternium -7, Merquat 280, polyquaternium -39In any one or a few;

    The Beta molecular sieves are fired, and removing containsAfter the substance of structural unit, containThere are the mesoporous II grades for being 4.9~13nm with aperture of I grades that aperture is 2~4.8nm mesoporous;

    Described I grades mesoporous and mesoporous II Kong Rong ratio is 1:

    1~20;

    Described I grades mesoporous and mesoporous II total pore volume is not less than 0.5cm3/g。

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