Preparation of hollow mesoporous silicon dioxide sphere with continuously variable cavity diameter

A technology of mesoporous silica and silica spheres, applied in the field of inorganic mesoporous materials, can solve the problems of large diameter of spheres and limited application, and achieve the effect of increasing storage capacity and simple preparation process
CN101475183AInactive Publication Date: 2009-07-08BEIHANG UNIV
0 Cites 39 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2009-07-08
Estimated Expiration
Not applicable · inactive patent

Smart Images

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

Abstract

The invention relates to a method for preparing a hollow mesoporous silicon dioxide ball with continuously-changing cavity diameter, which is characterized by specifically comprising the following steps: (1) dissolving 0.05 to 2 g of hexadecyl trimethyl ammonium bromide into 12 to 70 ml of ethanol to be stirred for 10 minutes to be dissolved fully, and adding 0.5 to 9 ml of ethyl orthosilicate for stirring fully; (2) preparing 0.01 to 0.4M of ammonia solution; (3) stirring the ammonia solution at a high speed, adding the mixed solution prepared in the step (1) into the ammonia solution quickly; stopping stirring after five minutes; and generating white floccule floating on the surface of the liquid, wherein the volume ratio of the mixed solution to the ammonia solution is 1:5-1:20; and (4) heating up the filtered white precipitate to 600 DEG C at a speed of 2 DEG C / min, and keeping the temperature for 1 hour to obtain the hollow mesoporous silicon dioxide ball.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention relates to a method for preparing hollow mesoporous silica spheres with continuously changing cavity diameters, in particular to a method for preparing hollow mesoporous silica spheres by mixing ethanol, cetyltrimethylammonium bromide and ethyl orthosilicate Template synthesis of hollow mesoporous silica spheres, and a method for tuning the cavity diameter. It belongs to the technical field of inorganic mesoporous materials. Background technique:

[0002] According to the definition of the International Union of Pure and Applied Chemistry (IUPAC), porous materials can be divided into three categories according to their pore diameters: materials with a pore diameter less than 2 nm are microporous materials; materials with a pore diameter of 2-50 nm are mesoporous Materials (mesoporous materials); materials with a pore diameter greater than 50nm are macroporous materials (macroporous materials). Zeolite (zeolite) molecular sieve is the e...

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