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Nano-scale ordered mesoporous silicon dioxide spheres and preparation method of same

A technology of mesoporous silica and silica spheres, applied in the field of inorganic porous materials, can solve the problems of high toxicity and high cost, and achieve low cost, short production cycle and good reproducibility

Active Publication Date: 2016-01-13
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nano-scale ordered mesoporous silica sphere and its preparation method, which can provide a new type of ordered mesoporous silica sphere, and its preparation method overcomes the existing method Defects of high cost and high toxicity

Method used

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  • Nano-scale ordered mesoporous silicon dioxide spheres and preparation method of same
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  • Nano-scale ordered mesoporous silicon dioxide spheres and preparation method of same

Examples

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Effect test

Embodiment 1

[0030] A nanoscale ordered mesoporous silica sphere, the preparation method is as follows:

[0031] Fully dissolve 0.16g of ionic liquid in 81ml of ethanol / water (28ml of ethanol, 53ml of water), add 1ml of ammonia water, stir vigorously at 22°C for 30min, then add 1ml of tetraethyl orthosilicate under stirring, and continue at 22 The reaction was stirred at ℃ for 6 hours, the reaction mixture was filtered and washed, dried at 50℃ for 6 hours, calcined in air at 600℃ for 6 hours, and then cooled to room temperature to obtain nanoscale ordered mesoporous silica spheres.

[0032] The nanoscale ordered mesoporous silica spheres have an average particle diameter of 320nm, a mesopore diameter of 3.81nm, and a specific surface area of ​​1156m 2 / g, the pore volume is 0.73cm 3 / g, uniform in size and shape, with an ordered mesoporous channel structure arranged radially from the center of the sphere to the outer surface.

Embodiment 2

[0034] A nanoscale ordered mesoporous silica sphere, the preparation method is as follows:

[0035] Dissolve 0.16g of ionic liquid in 81ml of ethanol / water (30.5ml of ethanol, 50.5ml of water), add 1ml of ammonia water, stir vigorously at 22°C for 30min, then add 1ml of tetraethyl orthosilicate under stirring, and continue to Stirring and reacting at 22°C for 6 hours, the reaction mixture was filtered and washed, dried at 50°C for 6 hours, and calcined at 600°C in an air environment for 6 hours to obtain nanoscale ordered mesoporous silica spheres.

[0036] The nanoscale ordered mesoporous silica spheres have an average particle diameter of 500nm, a mesopore diameter of 3.38nm, and a specific surface area of ​​1194m 2 / g, the pore volume is 0.81cm 3 / g, uniform in size and shape, with an ordered mesoporous channel structure arranged radially from the center of the sphere to the outer surface.

Embodiment 3

[0038] A nanoscale ordered mesoporous silica sphere, the preparation method is as follows:

[0039] Dissolve 0.16g of ionic liquid in 81ml of ethanol / water (22.0ml of ethanol, 59.0ml of water), add 1ml of ammonia water, stir vigorously at 22°C for 30min, then add 1ml of tetraethyl orthosilicate under stirring, continue to Stirring and reacting at 22°C for 6 hours, the reaction mixture was filtered and washed, dried at 50°C for 6 hours, and calcined at 600°C in an air environment for 6 hours to obtain nanoscale ordered mesoporous silica spheres.

[0040] The nanoscale ordered mesoporous silica spheres have an average particle diameter of 150nm, a mesopore diameter of 3.43nm, and a specific surface area of ​​1615m 2 / g, the pore volume is 1.16cm3 / g, uniform in size and shape, with an ordered mesoporous channel structure arranged radially from the center of the sphere to the outer surface.

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Abstract

The invention belongs to the technical field of inorganic porous materials and particularly relates to a nano-scale ordered mesoporous silicon dioxide sphere and a preparation method of same. The diameter of the ordered mesoporous silicon dioxide sphere is controllable within the range of 150-500 nm. The sphere is uniform in size and shape, is 1073-1615 m<2> / g in specific surface area, is 0.71-1.16 cm<3> / g in pore volume and is 3.06-3.81 nm in pore diameter, and has an ordered mesoporous structure in a manner of radicalized arrangement from sphere center to outer surface. The preparation method is simple in process, is easy to carry out, is low in cost, is mild in reaction conditions, is good in repeatability and high in yield, is short in production period, is easy to amplify and is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of inorganic porous materials, and in particular relates to a nanoscale ordered mesoporous silica sphere and a preparation method thereof. Background technique [0002] In recent years, ordered mesoporous silica materials have been widely used in many fields because of their unique structural characteristics and morphology (huge specific surface area, ordered pore structure, good thermal stability and hydrothermal stability). Synthesis and manufacturing fields such as phase catalysis, drug delivery, nanoreactors, chromatographic stationary phases, adsorbents, lightweight material fillers, etc. [0003] The performance of the material is closely related to the particle size and shape of the material. The particle size of traditional ordered mesoporous silica is generally between microns and centimeters, and the shape is not uniform and the specific surface is small. These properties are largely It affects th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18B82Y30/00B82Y40/00
Inventor 徐丽邓怡杰刘国际孙晓波孙会岭
Owner ZHENGZHOU UNIV
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