Hyperbranched polymer functionalized mesoporous material and application thereof

A technology of hyperbranched polymers and mesoporous materials, applied in water pollutants, other chemical processes, chemical instruments and methods, etc., can solve the problems of poor stability of functionalized modified components, complex synthesis steps of modified mesoporous silicon materials, Organic groups block pores and other problems, to achieve the effect of strong plasticity, short cycle and efficient adsorption

Active Publication Date: 2015-03-25
HAIMEN ZHUOWEI TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified mesoporous silicon material prepared by the post-grafting method has complex synthesis steps, and the stability of the functional modification components is poor, which may cause organic groups to block the pores

Method used

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  • Hyperbranched polymer functionalized mesoporous material and application thereof
  • Hyperbranched polymer functionalized mesoporous material and application thereof
  • Hyperbranched polymer functionalized mesoporous material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30°C, control the concentration of P123 to 14.50 g / L; add 2mol / L HCL solution , control the mass volume ratio (g / mL) of P123 and HCL solution to 1:35, stir until uniform, and obtain P123 acidic solution.

[0031] Add 2-cyanotriethoxysilane (CTES) to the P123 acidic solution, control the mass ratio of CTES to P123 to 1:11.76, stir at 30°C at a speed of 400r / min for 40 min, and add orthosilicon drop by drop Ethyl acetate (TEOS), the mass ratio of TEOS and P123 was controlled to be 2.15:1, stirred at a speed of 400r / min at 40°C for 24h to obtain a silica sol precursor.

[0032] Move the silica sol precursor to a reactor lined with tetrafluoroethylene for crystallization at 90°C for 24 hours, filter the resulting white precipitate, and dry it in vacuum at 80°C to obtain a white powder that is cyano-functionalized mesoporous silicon SBA -15 (denoted a...

Embodiment 2

[0041] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30 °C, and control the concentration of P123 to 25.86 g / L. Then add 2mol / L HCL solution, control the mass volume ratio (g / mL) of P123 and HCL solution to 1:60, stir until uniform, and obtain P123 acidic solution.

[0042] Add 3-cyanotriethoxysilane (CETES) to the P123 acidic solution, control the mass ratio of CETES to P123 to 1:6.49, stir at 45°C at a speed of 600r / min for 30 min, and add orthosilicon drop by drop Acetate methyl ester (TMOS), control the mass ratio of TMOS and P123 to 1.54:1, and stir at 50°C at a speed of 600r / min for 12h to obtain a silica sol precursor.

[0043] Move the silica sol precursor to a reactor lined with tetrafluoroethylene for crystallization at 80°C for 36 hours, filter the resulting white precipitate, and dry it in vacuum at 80°C to obtain a white powder that is cyano-functionalized mesoporous silicon SBA -15 ...

Embodiment 3

[0048] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30 °C, and control the concentration of P123 to 7.86 g / L. Then add 2mol / L HCL solution, control the mass volume ratio (g / mL) of P123 and HCL solution to 1:40, stir until uniform, and obtain P123 acidic solution.

[0049] Add 2-cyanotriethoxysilane (CTES) to the P123 acidic solution, control the mass ratio of CTES to P123 to 1:7.70, stir at 60°C at a speed of 400r / min for 30 min, and add orthosilicon drop by drop Ethyl acetate (TEOS), the mass ratio of TEOS and P123 was controlled to be 2.65:1, and stirred at 500r / min at 60°C for 8h to obtain a silica sol precursor.

[0050] Move the silica sol precursor to a reactor lined with tetrafluoroethylene for crystallization at 110°C for 12 hours, filter the resulting white precipitate, and dry it in vacuum at 80°C to obtain a white powder that is cyano-functionalized mesoporous silicon SBA -15 (CN-SBA-...

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Abstract

The invention discloses a hyperbranched polymer functionalized mesoporous material and application thereof. The preparation method comprises the following steps: carboxylating cyano-modified mesoporous silicon synthesized by copolycondensation, thereby obtaining carboxyl functionalized mesoporous silicon; and grafting an amino-terminated hyperbranched polymer on the carboxyl functionalized mesoporous silicon by adopting a 'grafting to' strategy, thereby obtaining a carboxylated mesoporous silicon / amino-terminated hyperbranched polymer hybrid material. The macroscopical shape of functionalized mesoporous material provided by the invention is low-density powder, the microstructure is regular and ordered, the functionalized mesoporous material is generally a two-dimensional hexagonal p6mm porous structure and is large in specific surface area, the pore surface is coated with hyperbranched organic functional components, and the functionalized mesoporous material is enriched in active adsorption sites, has good capacity of adsorbing heavy metal ions and organic dye pollutants and can be applied to the field of wastewater treatment or functional carriers.

Description

technical field [0001] The invention relates to a hyperbranched polymer functionalized mesoporous material and its application, in particular to an amino-terminated hyperbranched polymer functionalized mesoporous silicon hybrid material and its application, belonging to the technical field of functional materials. Background technique [0002] Mesoporous material is a porous material with a pore size between 2nm and 50nm. Compared with ordinary porous materials, its pore structure is uniformly distributed and its specific surface area is larger. Among them, the cost of mesoporous silicon material is low, and the source of raw material is extensive. SBA-15 type mesoporous silica is a kind of mesoporous silicon material with large pore diameter, thick pore wall and good hydrothermal stability. Its pores are two-dimensional hexagonal structure and highly regular distribution. These characteristics make SBA-15 a good carrier matrix, showing great application potential in the fi...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20C02F101/30C02F103/30
CPCB01J20/264C02F1/285C02F2101/20C02F2101/30C02F2101/308C02F2103/30
Inventor 陶金陈宇岳熊佳庆林红
Owner HAIMEN ZHUOWEI TEXTILE CO LTD
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