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Preparation method and application of heteropolyacid-modified metal-organic framework composite

A technology of metal-organic frameworks and heteropolyacids, applied in the direction of organic diaphragms, electrolytic components, electrolytic processes, etc., can solve the problems of limiting the loading of heteropolyacids on substrates and the loss of heteropolyacids, achieving good stability and improving The effect of proton conductivity

Active Publication Date: 2022-05-17
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of combining the two by relying on weak interaction forces such as electrostatic force not only limits the loading capacity of the substrate on the heteropolyacid, but also inevitably leads to loss of

Method used

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  • Preparation method and application of heteropolyacid-modified metal-organic framework composite
  • Preparation method and application of heteropolyacid-modified metal-organic framework composite
  • Preparation method and application of heteropolyacid-modified metal-organic framework composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1g of MIL-101-NH 2 Ultrasound in deionized water for 1h to obtain a suspension, then add 5g of phosphotungstic acid to the uniformly dispersed MIL-101-NH 2 In the suspension, stir for more than 24h. Then put the suspension in an oven and place it at 60°C for 24 hours to completely remove the water to obtain evenly dispersed MIL-101-NH 2 / Phosphotungstic acid powder. The powder was placed in the oven, first placed at 100°C for 12 hours, then heated to 275°C at a heating rate of 5°C / min, and kept for 5 hours. When the muffle furnace returned to room temperature, the crude UiO-66-NH 2 / Phosphotungstic acid powder.

[0025] Wash the prepared powder several times with water to remove unreacted phosphotungstic acid to obtain pure MIL-101-NH 2 / Phosphotungstic acid powder. Add 0.018g of powder into sulfonated polyetheretherketone (SPEEK) to ensure that the total mass is 0.3g. The aforementioned mixture was evenly dispersed in N,N-dimethylacetamide (DMAc), ensuring th...

Embodiment 2

[0028] 1g of UiO-66-NH 2 Sonicate in deionized water for 1h, then add 5g of silicotungstic acid into the uniformly dispersed UiO-66-NH 2 In the suspension, stir for more than 24h. Afterwards, the suspension was placed in an oven and placed at 60°C for 24 hours to completely remove the water to obtain uniformly dispersed UiO-66-NH 2 / Silicon tungstic acid powder. The powder was placed in the oven, first placed at 100°C for 12 hours, then heated to 275°C at a heating rate of 5°C / min, and kept for 5 hours. When the muffle furnace returned to room temperature, the crude UiO-66-NH 2 / Silicon tungstic acid powder. Wash the prepared powder several times with water to remove unreacted silicotungstic acid to obtain pure UiO-66-NH 2 / Silicon tungstic acid powder.

[0029]Add 0.018g of powder into sulfonated polyetheretherketone (SPEEK) to ensure that the total mass is 0.3g. The aforementioned mixture was evenly dispersed in N,N-dimethylacetamide (DMAc), ensuring that the mass ...

Embodiment 3

[0031] 1g of UiO-66-NH 2 Sonicate in deionized water for 1h, then add 9g of phosphotungstic acid into the uniformly dispersed UiO-66-NH 2 In the suspension, stir for more than 24h. Afterwards, the suspension was placed in an oven and placed at 60°C for 24 hours to completely remove the water to obtain uniformly dispersed UiO-66-NH 2 / Phosphotungstic acid powder. The powder was placed in the oven, first placed at 100°C for 12 hours, then heated to 275°C at a heating rate of 5°C / min, and kept for 5 hours. When the muffle furnace returned to room temperature, the crude UiO-66-NH 2 / Phosphotungstic acid powder. Wash the prepared powder several times with water to remove unreacted phosphotungstic acid to obtain pure UiO-66-NH 2 / Phosphotungstic acid powder.

[0032] Add 0.018g of powder into sulfonated polyetheretherketone (SPEEK) to ensure that the total mass is 0.3g. The aforementioned mixture was evenly dispersed in N,N-dimethylacetamide (DMAc), ensuring that the mass ...

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Abstract

The invention provides a preparation method and application of a heteropolyacid-modified metal-organic framework compound, which is put into a muffle furnace after drying the homogeneously mixed amino-containing metal-organic framework and heteropolyacid suspension Burning in a medium to prepare MOF / heteropolyacid nanofillers linked by covalent bonds. When the filler is added to sulfonated polyetheretherketone (SPEEK), the composite proton exchange membrane exhibits excellent proton conductivity, which is more than 50% higher than that of pure SPEEK; it also has good stability, and the proton conductivity in water exceeds 30 days unchanged. After the composite material is combined with a proton-conducting polymer substrate, it can be applied to a proton exchange membrane material for electrolyzing water to produce hydrogen.

Description

technical field [0001] The invention relates to the field of hydrogen production by electrolysis of water, in particular to a preparation method and application of a heteropolyacid-modified metal-organic framework compound; the composite filler can be applied to proton exchange for hydrogen production by electrolysis of water after being combined with a proton-conducting polymer substrate membrane material. Background technique [0002] With the gradual reduction of the use of fossil energy, people's demand for new energy such as hydrogen energy is more urgent. Hydrogen energy is a safe, reliable and clean energy source. Using renewable energy to electrolyze water to produce hydrogen is an important technology in the field of hydrogen energy. As the core component of the electrolyzer, the proton exchange membrane plays the role of separating the anode and cathode in the electrolyzer and transferring protons. The rate at which the proton exchange membrane conducts protons,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08J5/22C08L61/16C08L87/00C25B13/08C25B1/04
CPCC08G83/008C08J5/2256C25B13/08C25B1/04C08J2361/16C08J2487/00Y02E60/36
Inventor 王倩尹立坤翟绍雄林俊高学强谢宁宁路忠睿何少剑
Owner CHINA THREE GORGES CORPORATION
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