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Ultrasonic method for synthesizing mesoporous monox nanometer ball carrier material

A technology of mesoporous silicon oxide and carrier materials, applied in the fields of silicon oxide, silicon dioxide, chemical instruments and methods, etc.

Active Publication Date: 2006-02-08
珠海横琴长满欧国际贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the reported synthesis methods, the ultrasonic synthesis method has not yet been used to synthesize mesoporous silica nanosphere carriers using the cationic surfactant cetyltrimethylammonium bromide as an organic template.

Method used

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  • Ultrasonic method for synthesizing mesoporous monox nanometer ball carrier material
  • Ultrasonic method for synthesizing mesoporous monox nanometer ball carrier material

Examples

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Effect test

Embodiment 1

[0022] Example 1: 0.5 g of surfactant cetyltrimethylammonium bromide (CTAB) was dissolved in a mixed system of 120 ml of water and 20 ml of ethanol at room temperature, and cooled to room temperature. 4.0ml of ammonia water was added thereto, and then 1.05g of tetraethyl orthosilicate was quickly added to the above solution and stirred for 2 minutes. The reaction system was placed under an ultrasonic system with a frequency of 20 KHZ and a power of 40 watts for 2 h at room temperature.

[0023] Filter the reacted white mixed solution to obtain a white powder, wash it repeatedly with water and ethanol for 6-9 times, and then dry it in the air at room temperature or in an oven at 50°C-60°C.

[0024] The dried samples were calcined at 500° C. to 550° C. for 5 hours to remove the surfactant and obtain mesoporous silica spheres.

[0025] From the scanning electron microscope (SEM) photos, it can be known that the obtained mesoporous silica spheres have a diameter of about 500 nm. ...

Embodiment 2

[0030] Embodiment 2: Each process is as shown in Embodiment 1, but the ultrasonic time is changed to 6h. The results show that the size of the obtained mesoporous silica spheres is about 300nm, and the pore diameter and structure are similar to those of Example 1.

Embodiment 3

[0031] Embodiment 3: Each process is as shown in Embodiment 1, but the ultrasonic time is changed to 8h. The results show that the size of the obtained mesoporous silica spheres is about 150 nm, and the pore diameter and structure are similar to the results of Example 1.

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Abstract

The invention relates to a process for preparing mesoporous silicon oxide nano spherical carrier material, which comprises using ultrasonic technology, using ammonia as catalyst, using cationic surface active agent as structure guiding agent, carrying out co-assembly with inorganic silicon material in mixed solvent of organic solvent and water, thus obtaining nano-size homogeneous spheres with mesopourous ordered structure, then removing the surface active agent.

Description

technical field [0001] The invention belongs to the technical field of synthesis of inorganic porous materials, and specifically relates to a method for preparing mesoporous silicon oxide nanosphere carrier material, mainly referring to a method for synthesizing various nanometer-sized mesoporous silicon oxide balls by using ultrasonic technology. technical background [0002] In 1992, researchers from Mobil Corporation of the United States first reported the M41S series of mesoporous molecular sieves with high specific surface area and high degree of order in Nature. , Microelectrodes, semiconductor materials and other applications have been extensively studied. Nanoporous silica molecular sieves can be used as catalysts and catalyst carriers for petrochemical reactions such as acid catalysis, cracking, alkylation, and isomerization; they can also be used in fine chemicals, pharmaceuticals, and olefin polymerization; they can be used as adsorbents and desorbents It is used...

Claims

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Application Information

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IPC IPC(8): C01B33/18C01B39/00
Inventor 朱广山裘式纶田景琦陈丽华郭晓丹
Owner 珠海横琴长满欧国际贸易有限公司
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