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Proton-electron mixed conductor hydrogen permeation membrane, preparation method thereof and hydrogen permeation membrane reactor

A hybrid conductor and electronic conductor technology, applied in the field of hydrogen permeation membrane reactor, can solve the problems of not being able to be used as a hydrogen permeation membrane, lack of electron transfer channels, unable to achieve hydrogen purification, etc., and achieve enhanced mechanical strength and anti-oxidation performance, high The effect of hydrogen permeation rate and strong anti-oxidation performance

Active Publication Date: 2019-02-01
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This material has been applied as a low temperature fuel cell proton exchange membrane, but PBI / H 3 PO 4 It only provides a proton transfer pathway, but lacks an electron transfer channel, so it cannot be used as a hydrogen permeable membrane and cannot purify hydrogen

Method used

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  • Proton-electron mixed conductor hydrogen permeation membrane, preparation method thereof and hydrogen permeation membrane reactor
  • Proton-electron mixed conductor hydrogen permeation membrane, preparation method thereof and hydrogen permeation membrane reactor
  • Proton-electron mixed conductor hydrogen permeation membrane, preparation method thereof and hydrogen permeation membrane reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Pour 1g polybenzimidazole (mPBI) and 10mL dimethylacetamide (DMAC) into the flask, heat at 120℃ with an electric heating mantle, and stir magnetically for 8h, then add 0.063g (5%) graphite and 5mL dimethylacetamide ( DMAC) Magnetic stirring for 8 hours, finally adding crosslinking agent 0.20g (20%) triglycidyl isocyanurate (TGIC), heating at 60° C. with an electric heating mantle, and magnetic stirring for 2 hours to obtain a mixed solution. The mixed solution was ultrasonically shaken for 30 minutes to remove air bubbles. The mixed solution was cast on a glass plate in a 60°C oven to form a film. After 2h, the solvent was volatilized. The temperature was raised to 160°C and kept for 5-6h. Finally, the film was taken out and soaked in deionized water until the film fell off naturally.

[0044] The membrane was cut into a disc with a radius of 0.5 cm and the membrane was immersed in 1 mol / L phosphoric acid for 24 hours. The surface of the membrane was taken out and brushed ...

Embodiment 2-3

[0054] Example 2-3 is the same as Example 1, except that the amount of crosslinking agent added is 0.25g (25%) and 0.30g (30%) respectively, and the mechanical strength is shown in Table 3.

[0055] table 3

[0056]

Embodiment 4

[0058] Pour 1g of polybenzimidazole (mPBI) and 10mL of dimethylacetamide (DMAC) into the flask, heat at 120℃ with an electric heating mantle, magnetically stir for 8h, then add 0.14g (10%) graphene and 5mL dimethylacetamide (DMAC) Magnetic stirring for 8 hours, finally adding crosslinking agent 0.25g (25%) triglycidyl isocyanurate (TGIC), heating with an electric heating mantle at 60°C and magnetic stirring for 2 hours to obtain a mixed solution. The mixed solution was ultrasonically shaken for 30 minutes to remove air bubbles. The mixed solution was cast into a film on a glass plate in an oven at 60°C, and the solvent was evaporated after 2h; the temperature was raised to 160°C for 5-6h, and finally the membrane was taken out and soaked in deionized water until the membrane fell off naturally.

[0059] The membrane was cut into a disc with a radius of 0.5 cm and the membrane was immersed in 1 mol / L phosphoric acid for 24 hours. The surface of the membrane was taken out and brush...

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Abstract

Belonging to the field of gas separation engineering, the invention in particular relates to a proton-electron mixed conductor hydrogen permeation membrane, a preparation method thereof and a hydrogenpermeation membrane reactor. The preparation method includes: taking polybenzimidazole, an electronic conductor and triglycidyl isocyanurate as the raw materials, adopting as graphite or graphene asthe electronic conductor, and employing dimethylacetamide as the solvent, mixing the raw materials with the solvent for dissolution to obtain a PBI / electronic conductor / TGIC cross-linked composite membrane; then performing soaking in concentrated phosphoric acid or a phosphate solution to obtain a PBI / electronic conductor / TGIC / H3PO4 cross-linked composite membrane; and then coating a Pt, Pd or Agcatalyst on the surface so as to obtain the proton-electron mixed conductor hydrogen permeation membrane. The proton-electron mixed conductor hydrogen permeation membrane has high hydrogen permeationrate, high mechanical strength and strong oxidation resistance, can be applicable to medium and low temperature environments, and has the advantages of good thermal and chemical stability, oxidation resistance and the like. The invention also provides the preparation method with the characteristics of mild conditions and low cost. The hydrogen permeation membrane can be used for constructing an efficient medium and low temperature hydrogen permeation membrane reactor.

Description

Technical field [0001] The invention belongs to the field of gas separation engineering, and specifically relates to a proton-electron mixed conductor hydrogen permeable membrane, a preparation method thereof, and a hydrogen permeable membrane reactor. Background technique [0002] Hydrogen is an important chemical raw material, which is widely used in petroleum refining and methane production. In addition, hydrogen is a clean, pollution-free and sustainable energy source, and the energy density of hydrogen (120MJ / Kg) is almost three times that of gasoline (40MJ / Kg), so hydrogen energy is expected to become a substitute for fossil fuels. Product. Pressure swing adsorption, cryogenic separation and membrane separation are common hydrogen separation technologies. Among them, the advantages of membrane separation technology, such as low energy consumption, easy operation and small footprint, have become the research hotspots in recent years. The traditional ceramic membrane mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/58B01D67/00B01D53/22C01B3/56
CPCB01D53/228B01D67/0006B01D71/58C01B3/56
Inventor 孟秀霞高波杨乃涛孟波靳昀张津津于方永刘少敏
Owner SHANDONG UNIV OF TECH
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