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Oil-water emulsion separation membrane of metal organic framework compound/polyacrylonitrile

A metal organic framework, polyacrylonitrile technology, applied in the field of oil-water emulsion separation membrane, oil-water separation materials, can solve the problems of high porosity, low density and so on

Inactive Publication Date: 2018-05-04
CHINA UNIV OF PETROLEUM (EAST CHINA)
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AI Technical Summary

Problems solved by technology

Metal-organic frameworks have the advantages of ultra-high specific surface area, low density, high porosity, pore regularity, tunable pore size, topology diversity and tailorability, etc. However, they are rarely used in the separation of oil-water emulsions.

Method used

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  • Oil-water emulsion separation membrane of metal organic framework compound/polyacrylonitrile
  • Oil-water emulsion separation membrane of metal organic framework compound/polyacrylonitrile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1, 0.70134 grams of zirconium tetrachloride and 0.5361 grams of 2-aminoterephthalic acid were dissolved in 300 milliliters of dimethylformamide for 10 minutes of ultrasonication and stirred for 1 hour; 17.7355 grams of glacial acetic acid was added, ultrasonicated for 30 minutes, stirred for 1 hour hours; transferred to a reaction kettle, hydrothermal reaction at 120°C for 24 hours; centrifuged three times with dimethylformamide and absolute ethanol respectively, and dried in a drying oven at 60°C for 12 hours. Add 0.52639 grams of polyacrylonitrile to 5 ml of dimethylformamide solution, stir magnetically at room temperature for 12 hours to obtain a uniform precursor solution; inhale the precursor solution into a 5 ml syringe, install a 21-gauge needle, and put the syringe into an electrostatic In the syringe pump of the spinning equipment, adjust the advancing speed of the syringe pump to 1 ml per hour, set the translation distance to 12 cm, and adjust the dista...

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Abstract

The invention relates to an oil-water emulsion separation membrane of a metal organic framework compound / polyacrylonitrile. According to the oil-water emulsion separation membrane, polyacrylonitrile is used as a raw material and is prepared into a fiber membrane with the yarn diameter of about 300 nanometers and extremely high porosity by utilizing an electrostatic spinning technology; then the fiber membrane is subjected to a hydrolytic action so that functional groups including hydroxyl, carboxyl and the like are formed on surfaces of fibers; furthermore, the fiber membrane and amino on hydrophilic UIO-66-NH2 can form hydrogen bonding and electrostatic adsorption; finally, a porous fiber membrane with a hydrophilic multi-grade structure is prepared. The porous fiber membrane can be usedfor carrying out efficient separation on oil-water emulsion and has extremely low oil adhesion and relatively high oil stain resistance; furthermore, a preparation method of the oil-water emulsion separation membrane is simple and feasible, is safe and environmentally friendly and has very good application value.

Description

technical field [0001] The invention relates to an oil-water separation material, in particular to a metal-organic framework compound / polyacrylonitrile oil-water emulsion separation membrane, which belongs to the technical field of new materials. Background technique [0002] Oily sewage comes from a wide range of sources, and oily sewage is produced during oil extraction, processing and use. According to statistics, about 3.2 million tons of oil (about 1 / 1000 of the world's total oil production) enters the ocean every year to cause pollution. Oily sewage has high oil content and high chemical oxygen consumption, and it is directly discharged into the environment, which will cause serious pollution to soil, groundwater and oceans. It is of great significance to treat oily sewage quickly and efficiently. [0003] At present, there have been many studies on the separation of oil-water emulsions, and the combination of electrospinning technology can effectively prepare porous ...

Claims

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Application Information

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IPC IPC(8): B01D71/42B01D69/02B01D67/00B01D61/40C02F1/44C02F1/40
CPCB01D61/40B01D67/0002B01D69/02B01D71/42B01D2323/39B01D2325/36B01D2325/40C02F1/40C02F1/44
Inventor 薛庆忠李晖郭天超李潇陶保收何大亮
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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