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Sulfhydrylation-modified TRIES separating membrane and preparation method and purpose thereof

A technology of separation membrane and thiolization, which is applied in chemical instruments and methods, semi-permeable membrane separation, membrane, etc., can solve the problems of low separation performance of inorganic reverse osmosis membranes, achieve improved water flux, easy passage, and improved salt interception rate effect

Active Publication Date: 2017-07-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the present invention: To solve the problem of low separation performance of existing inorganic reverse osmosis membranes, the present invention provides a thiol-modified TRIES separation membrane and a preparation method thereof, and prepares a membrane that can simultaneously improve the salt rejection rate and water flow rate. amount of inorganic reverse osmosis separation membrane

Method used

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  • Sulfhydrylation-modified TRIES separating membrane and preparation method and purpose thereof
  • Sulfhydrylation-modified TRIES separating membrane and preparation method and purpose thereof
  • Sulfhydrylation-modified TRIES separating membrane and preparation method and purpose thereof

Examples

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Embodiment 1

[0023] 1. Under the condition of continuous stirring in a water bath at 25°C, add 1g of triethoxysilane to 22.67g of isopropanol to disperse evenly, then add 26.33g of deionized water to disperse evenly, and finally add 0.022g of HCl solution After reacting for 2h, the TRIES sol was prepared, which was coated on α-Al 2 o 3 Material support diaphragm, at 400°C N 2 Calcined under the atmosphere to prepare the TRIES separation membrane;

[0024] 2. Put the TRIES separation membrane prepared in step 1 in a tube furnace, and pass H at 400°C 2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ mercapto-modification, modified for 1 hour, to prepare mercapto-modified TRIES separation membrane;

[0025] 3. Put the TRIES sol prepared in step 1 in a tube furnace, 2 Calcined under the atmosphere to prepare the TRIES gel, and pass H at 400°C 2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ thiol modification, modified for 1 hour, prepared mercapto-modified TRIES ...

Embodiment 2

[0027] 1. Under the condition of continuous stirring in a water bath at 25°C, add 1g of triethoxysilane to 22.67g of isopropanol to disperse evenly, then add 26.33g of deionized water to disperse evenly, and finally add 0.022g of HCl solution After reacting for 2h, the TRIES sol was prepared, which was coated on α-Al 2 o 3 Material support diaphragm, at 500°C N 2 Calcined under the atmosphere to prepare the TRIES separation membrane;

[0028] 2. Put the TRIES separation membrane prepared in step 1 in a tube furnace, and pass H at 500°C 2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ mercapto-modification, modified for 1 hour, to prepare mercapto-modified TRIES separation membrane;

[0029] 3. Put the TRIES sol prepared in step 1 in a tube furnace, 2 Calcined under the atmosphere to prepare the TRIES gel, and pass H at 500°C 2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ thiol modification, modified for 1 hour, prepared mercapto-modified TRIES ...

Embodiment 3

[0031] 1. Under the condition of continuous stirring in a water bath at 25°C, add 1g of triethoxysilane to 22.67g of isopropanol to disperse evenly, then add 26.33g of deionized water to disperse evenly, and finally add 0.022g of HCl solution After reacting for 2h, the TRIES sol was prepared, which was coated on α-Al 2 o 3 Material support diaphragm, at 600°C N 2 Calcined under the atmosphere to prepare the TRIES separation membrane;

[0032] 2. Put the TRIES separation membrane prepared in step 1 in a tube furnace, and pass H at 600°C 2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ mercapto-modification, modified for 1 hour, to prepare mercapto-modified TRIES separation membrane;

[0033] 3. Put the TRIES sol prepared in step 1 in a tube furnace, 2 Calcined under the atmosphere to prepare the TRIES gel, and pass H at 600°C2 S molar concentration of 10% H 2 S / H 2 Mixed gas, in-situ thiol modification, modified for 1 hour, prepared mercapto-modified TRIES ge...

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Abstract

The invention belongs to the field of preparation of an inorganic membrane material, and especially relates to a sulfhydrylation-modified TRIES separating membrane and a preparation method and a purpose thereof. a TRIES sol is prepared by a sol-gel method, a support diaphragm of an alpha-Al2O3 material is coated with the TRIES sol, then is calcined under high temperature inert atmosphere to obtain the TRIES separating membrane, H2S and H2 mixing gas is introduced under high temperature condition, and in-situ sulfhydrylation modification is carried out for 1 hour to obtain the sulfhydrylation-modified TRIES separating membrane. The sulfhydrylation-modified TRIES separating membrane is used for the field of reverse osmosis desalination, and presents good separating performance.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic membrane materials, in particular to a mercapto-modified TRIES separation membrane and its preparation method and application. Background technique [0002] The increasing shortage of fresh water resources has seriously hindered the development of human society and economy. It is of great practical significance to desalinate seawater or brackish water through reverse osmosis technology to make them available fresh water resources. The choice of membrane material is particularly critical in reverse osmosis technology. The traditional polyamide organic reverse osmosis membrane has the advantages of high salt rejection rate and large water flux, but its resistance to chlorine and pollution is poor, and active chlorine in water (as a control membrane Contamination (the most commonly used cleaning agent or bactericide) is easy to degrade the membrane and lead to a sharp decline in its performanc...

Claims

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Application Information

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IPC IPC(8): B01D71/06B01D69/02B01D67/00
CPCB01D67/0006B01D69/02B01D71/06B01D2325/36
Inventor 徐荣郭猛姜万钟璟张琪戚律
Owner CHANGZHOU UNIV
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