Palladium nanoparticle/ceramic hydrogen permeation membrane composite material and preparation method thereof

A composite material, palladium nanotechnology, applied in separation methods, semi-permeable membrane separation, dispersed particle separation, etc., can solve the problems that the stability of palladium composite membranes affects commercial applications, etc., to improve reliability and stability, and good hydrogen resistance Brittleness, the effect of widening the use temperature

Active Publication Date: 2018-05-11
北京中科美安科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the stability of palladium composite membrane is the most important obstacle affecting its commercial application

Method used

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  • Palladium nanoparticle/ceramic hydrogen permeation membrane composite material and preparation method thereof
  • Palladium nanoparticle/ceramic hydrogen permeation membrane composite material and preparation method thereof
  • Palladium nanoparticle/ceramic hydrogen permeation membrane composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The porous ceramic support used is α-Al 2 o 3 / γ-Al 2 o 3 / ZrO 2 Asymmetric structure, tube length 50mm, tube diameter specification 14mm×12mm, ZrO 2 The separation layer (inside) had a pore diameter of 20 nm and a porosity of 60%.

[0024] a. The surface of the porous ceramic carrier is washed with absolute ethanol and deionized water and then dried at 120°C;

[0025] b. Place PdSO on the outside and inside of the cleaned porous ceramic carrier 4 Reagent (0.1mol / L) and SnCl 2 Reducing agent (0.1mol / L), keep the liquid level of reducing agent lower than PdSO 4 Reagent 20cm (see figure 1 ), after soaking for 24h, take out the porous ceramic carrier;

[0026] c. Take out the carrier, filter and wash the carrier in deionized water at a temperature of 40°C, and remove the residual liquid and organic matter remaining in the pores of the carrier;

[0027] d. Drying: the carrier is taken out, washed in deionized water, and dried at 150°C.

[0028] e. Repeat steps b-...

Embodiment 2

[0031] The porous ceramic support used is α-Al 2 o 3 / γ-Al 2 o 3 / ZrO 2 Asymmetric structure, tube length 50mm, tube diameter specification 14mm×12mm, ZrO 2 The separation layer (inside) has a pore diameter of 10 nm and a porosity of 30%.

[0032] a. The surface of the porous ceramic carrier is washed with absolute ethanol and deionized water and then dried at 120°C;

[0033] b. Place PdCl on the inside and outside of the porous ceramic carrier, respectively 2 Reagent (0.15mol / L) and reducing agent sodium formate (0.1mol / L), keep the liquid level of reducing agent lower than PdCl 2 Reagent 30cm, after soaking for 24h, take out the porous ceramic carrier;

[0034] c. Take out the carrier, filter and wash the carrier in deionized water at a temperature of 40°C, and remove the residual liquid and organic matter remaining in the pores of the carrier;

[0035] d. Drying: the carrier is taken out, washed in deionized water, and dried at 150°C.

[0036] e. Repeat steps b-d 1...

Embodiment 3

[0039] The porous ceramic support used is α-Al 2 o 3 / γ-Al 2 o 3 / γ-Al 2 o 3 Asymmetric structure, tube length 50mm, tube diameter specification 14mm×12mm, γ-Al 2 o 3 The separation layer (inside) has a pore diameter of 40 nm and a porosity of 50%.

[0040]a. The surface of the porous ceramic carrier is washed with absolute ethanol and deionized water and then dried at 120°C;

[0041] b. Place palladium acetate reagent (0.20mol / L) and reducing agent sodium formate (0.15mol / L) respectively on the inside and outside of the porous ceramic carrier to keep the liquid level of reducing agent lower than PdCl 2 Reagent 20cm, after soaking for 24h, take out the porous ceramic carrier;

[0042] c. Take out the carrier, filter and wash the carrier in deionized water at a temperature of 40°C, and remove the residual liquid and organic matter remaining in the pores of the carrier;

[0043] d. Drying: the carrier is taken out, washed in deionized water, and dried at 150°C.

[0044...

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PUM

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Abstract

The invention provides a palladium nanoparticle / ceramic hydrogen permeation membrane composite material. The palladium nanoparticle / ceramic hydrogen permeation membrane composite material has good hydrogen permeation performance and stability and can be used for separation, purification and production of hydrogen. Compared with a traditional palladium composite membrane, the composite material provided by the invention has the characteristic of higher surface hydrogen adsorption amount than bulk-phase hydrogen adsorption amount in virtue of palladium nanoparticles and can obviously inhibit theswelling of palladium lattices during hydrogen adsorption and desorption, so the composite material is improved in stability at high temperature and in hydrogen adsorption / desorption cycles; moreover, the composite material has good hydrogen embrittlement resistance.

Description

technical field [0001] The invention relates to a palladium nanoparticle / ceramic hydrogen permeable membrane composite material. The palladium nanoparticle is embedded in the pores of the ceramic membrane by means of a chemical method. The material has good hydrogen permeability and stability and can be used for the separation, purification and production of hydrogen. Production. Background technique [0002] With the increasing human demand for energy, environmental pollution and greenhouse gas effects have brought unprecedented pressure and challenges to the world, and the development of efficient and green energy conversion technologies has become the goal of various national energy strategies. As an efficient and clean secondary energy carrier, hydrogen can promote the conversion of fossil resources to clean energy. It has high energy density (142MJ / kg), abundant sources (such as water, biomass, etc.), small mass and environmental friendliness (water is The only combust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D71/02B01D53/22
CPCB01D53/228B01D67/0039B01D71/02
Inventor 李慧徐恒泳包淳
Owner 北京中科美安科技有限公司
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