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A method for modifying the pore structure and surface properties of organic-inorganic hybrid silicon membranes

A technology of hybrid silicon membrane and surface properties, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc. The effect of increased resistance

Active Publication Date: 2019-12-06
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still relatively few studies on the modification of organosilicon films containing unsaturated olefins.

Method used

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  • A method for modifying the pore structure and surface properties of organic-inorganic hybrid silicon membranes
  • A method for modifying the pore structure and surface properties of organic-inorganic hybrid silicon membranes
  • A method for modifying the pore structure and surface properties of organic-inorganic hybrid silicon membranes

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Coat the silicon-zirconium sol on the surface of the membrane support as a transition layer, move it into a tube furnace at 550°C and bake for 20 minutes, and the transition layer coating times are 12 times; Silicyl)ethylene ((EtO) 3 SiCH=CHSi(OEt) 3 , BTESEthy) sol to prepare the separation layer, and bake it in a tube furnace at 250 ° C. The number of coatings for the separation layer is 3 times. After the coating and firing are completed, put it into a vacuum oven for storage.

[0024] (1) Immerse the organic-inorganic hybrid silicon membrane prepared above in an alkaline solution,

[0025] Wherein, the alkaline solution is 100 μL of 2 mol / L NaOH aqueous solution dispersed in 12 mL of anhydrous acetonitrile;

[0026] (2) With -5 ℃ ice brine (NaCl: H 2 (2 molar ratio is 1: 6.1) is ice-water bath, the system gained in step (1) is placed in it to cool, after stabilizing, add the decane solution of 3mL tert-butyl hydroperoxide (tert-butyl hydroperoxide) in the system ...

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Abstract

The invention belongs to the field of the organic-inorganic hybridized silicon film material preparation, and particularly relates to an organic-inorganic hybridized silicon film hole structure and a modification method for surface property. The method comprises the following steps: executing the epoxidation and open-cycle sulfonation reaction to an olefin group in an organic-inorganic hybridized silicon film by using tert-butyl hydroperoxide solution and NaHSO3 / Na2SO3 solution, and enabling the aqueous affinity of the film to be improved greatly, and increasing the water permeability.

Description

technical field [0001] The invention belongs to the field of preparation of organic-inorganic hybrid silicon membrane materials, in particular to a method for modifying the pore structure and surface properties of organic-inorganic hybrid silicon membranes. Background technique [0002] Organic-inorganic hybrid silicon materials have attracted increasing attention due to their excellent hydrothermal and chemical stability. The diversity of organic groups in this material provides a broad space for further modification of materials. The organic group structure in organic-inorganic hybrid silicon can be divided into bridge structure (EtO) 3 -Si-R-Si-(OEt) 3 and side group structure (EtO) 3 -Si-R (R = methyl, ethyl, vinyl, phenyl, thiophene, etc.). However, there are still relatively few studies on the modification of organosilicon films containing unsaturated olefins. Contents of the invention [0003] The invention provides a method for modifying the pore structure and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D67/00
CPCB01D67/0079
Inventor 徐荣程旭钟璟张琪戚律
Owner CHANGZHOU UNIV