Preparation and application of durable high-flux emulsion separation membrane material

An emulsion separation, high-throughput technology, applied in the field of materials, to achieve high-efficiency and high-throughput separation, good organic solvent resistance, and overcome the effects of low separation efficiency

Active Publication Date: 2021-08-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The content of the present invention aims at the problems existing in the separation efficiency, separation flux and hydrophobic stability of the existing emulsion separation membrane materials, and provides the preparation and application of a durable high-flux emulsion separation membrane material

Method used

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  • Preparation and application of durable high-flux emulsion separation membrane material
  • Preparation and application of durable high-flux emulsion separation membrane material
  • Preparation and application of durable high-flux emulsion separation membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Preparation of CFM / MOF(UiO-66-12) / PDMS membrane:

[0059] 0.318 g of zirconium tetrachloride was ultrasonically dissolved in 108 mL of N, N-dimethylformamide, then 0.228 g of terephthalic acid was added, and the above mixed solution was reacted in a reactor at 120 °C for 24 h, and then cooled to room temperature , after centrifugation at 8000 rpm and vacuum drying at 60°C, UiO-66NPs were obtained; 20 mg UiO-66NPs were dispersed in 100 mL deionized water, and then the Soak CFM in UiO-66NPs suspension and sonicate for 1.0h, take it out and dry at 60°C to obtain CFM loaded with UiO-66NPs seed crystals; mix 70 mL N, N-dimethylformamide, 0.71 mL 70wt% The zirconium n-propoxide solution was mixed with 40 mL glacial acetic acid, then 750 mg terephthalic acid was added, and the CFM loaded with UiO-66NPs seed crystals was immersed in the above mixed solution for 12 h, and then dried to obtain CFM / MOF ( UiO-66) membrane; the CFM / MOF (UiO-66) membrane was placed in 30 mL of 5...

Embodiment 2

[0073] (1) Preparation of CFM / MOF(UiO-66-15) / PDMS membrane:

[0074] 0.318 g of zirconium tetrachloride was ultrasonically dissolved in 108 mL of N, N-dimethylformamide, then 0.228 g of terephthalic acid was added, and the above mixed solution was reacted in a 120ºC reactor for 24 h, and then cooled to room temperature. After centrifugation at 8000 rpm and vacuum drying at 60 °C, UiO-66NPs were obtained; 20 mg UiO-66NPs were dispersed in 100 mL deionized water, and then CFM with a diameter of 8.0 cm and a thickness of 1.5-1.8 mm Soaked in UiO-66NPs suspension and sonicated for 1.0h, took it out and dried at 60°C to obtain CFM loaded with UiO-66NPs seeds; 70 mL N, N-dimethylformamide, 0.71 mL 70wt% normal The zirconium propoxide solution was mixed with 40 mL of glacial acetic acid, then 750 mg of terephthalic acid was added, and the CFM loaded with UiO-66NPs seed crystals was immersed in the above mixed solution for 15 h, and the CFM / MOF (UiO -66) membrane; place the CFM / MOF(U...

Embodiment 3

[0081] (1) Preparation of CFM / MOF(UiO-66-18) / PDMS membrane:

[0082] 0.318 g of zirconium tetrachloride was ultrasonically dissolved in 108 mL of N, N-dimethylformamide, then 0.228 g of terephthalic acid was added, and the above mixed solution was reacted in a reactor at 120 °C for 24 h, and then cooled to room temperature , after centrifugation at 8000 rpm and vacuum drying at 60°C, UiO-66NPs were obtained; 20 mg UiO-66NPs were dispersed in 100 mL deionized water, and then the Soak CFM in UiO-66NPs suspension and sonicate for 1.0h, take it out and dry at 60°C to obtain CFM loaded with UiO-66NPs seed crystals; mix 70 mL N, N-dimethylformamide, 0.71 mL 70wt% The zirconium n-propoxide solution was mixed with 40 mL glacial acetic acid, then 750 mg terephthalic acid was added, and the CFM loaded with UiO-66NPs seed crystals was immersed in the above mixed solution for 18 h, and then dried to obtain CFM / MOF ( UiO-66) membrane; the CFM / MOF (UiO-66) membrane was placed in 30 mL of 5...

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Abstract

The invention discloses preparation and application of a durable high-flux emulsion separation membrane material. Firstly, a metal organic framework (MOF) material is loaded on a leather collagen fiber membrane; then the leather collagen fiber membrane loaded with the MOF is soaked in a precursor solution for growing the MOF for standing reaction for secondary growth of the MOF, and the screening demulsification performance of the MOF loaded on the leather collagen fiber membrane is regulated and controlled by controlling secondary growth conditions; and then the MOF modified leather collagen fiber membrane is subjected to surface hydrophobic treatment by using a low-surface-energy substance, so that the durable high-flux emulsion separation membrane material is obtained. The durable high-flux emulsion separation membrane material provided by the invention can be used for high-flux separation of a water-in-oil emulsion stabilized by a compound surfactant, has excellent chemical stability such as organic solvent resistance, acid and alkali resistance, and ultraviolet resistance, and still has excellent separation performance on the water-in-oil emulsion after being worn.

Description

technical field [0001] The invention relates to the preparation and application of a durable high-flux emulsion separation membrane material, which belongs to the field of material technology. Background technique [0002] In the fields of oil and gas, energy and chemical industry, a large amount of emulsion wastewater will be produced in the production process, which is harmful to the environment (Zhang W F, Liu N, Cao Y Z, Lin X, Liu Y N, Feng L. Superwetting porous materials for waste water treatment: from immiscible oil / water mixture toemulsion separation[J]. Advanced Materials Interfaces, 2017, 4: 1700029. Zhang J Y, Zhang F, Wang A Q, Lu Y, Li J Y, Zhu Y Z, Jin J. Zwitterionic nanofibrous membranes with a superior antifouling property for gravity -drivencrude oil-in-water emulsion separation[J]. langmuir, 2018, 35: 1682-1689.). Current treatment methods mainly include gravity method, flocculation method, centrifugation method, etc. (Li j, Xu C C, Guo C Q, Tian H F, Zh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/76B01D69/12B01D67/00B01D17/02D06M15/37D06M15/643D06M101/10
CPCB01D71/76B01D17/02B01D69/12B01D67/0002D06M15/37D06M15/643D06M2101/10
Inventor 黄鑫李会芳肖涵中石碧
Owner SICHUAN UNIV
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