Method for preparing zeolite material in perforation type of multilevel pore canals

A technology of zeolite materials and channels, which is applied in the field of preparation of zeolite materials, can solve the problems of non-penetration, uniformity of zeolite, loading, etc., and achieve the effect of low device requirements, easy external control, and high specific surface area
CN101003377AActive Publication Date: 2007-07-25CHINA PETROLEUM & CHEM CORP +2
4 Cites 18 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2007-07-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention discloses a method for preparing multi-level porous cross-flow zeolite material. The method comprises: (1) dispersing zeolite microcrystal in water or inorganic salt solution to form colloidal solution; (2) soaking the multi-level porous cross-flow silica gel material in polyelectrolyte solution so that the surface of the modified backbone is charged; (3) soaking and washing the silica gel material obtained in step 2 in the colloidal solution obtained in step 1 under normal or negative pressure; (4) soaking the silica gel material obtained in step 3in the colloidal solution obtained in step 1 under normal or negative pressure, and performing secondary crystallization by using vapor phase method. The obtained multi-level porous cross-flow property and abundant macropores with high uniformity, and can be used in catalysis and adsorption-separation. It has obvious advantages against normal zeolite molecular sieve on catalyst, adsorbent, separating agent and water treatment.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a preparation method of a zeolite material, and more particularly relates to a preparation method of a multi-stage channel through-flow zeolite material. Background technique

[0002] As an inorganic porous material, zeolite has abundant micropores, molecular sieve selectivity and good thermal and hydrothermal stability, and is widely used in catalysis and separation processes. At present, the general preparation method of zeolite catalyst is: firstly crystallize a certain ratio of reactant material gel mixture at high temperature to obtain zeolite, then combine zeolite with a carrier with or without binder, and then form a finished catalyst product. In this way, the active component of the catalyst, zeolite, is dispersed in various parts of the catalyst body phase, but cannot be highly dispersed on the surface of the catalyst to fully exert its catalytic effect, and the diffusion limitation is introduced. In order to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More