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Carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof

A platinum catalyst and core-shell technology, which is applied in the field of carbon-supported core-shell platinum-copper-platinum catalyst for indirect electrolysis hydrogen production and its preparation, can solve the problems of complicated operation process, inability to effectively improve catalytic efficiency, etc., and achieve high catalytic performance. The effect of activity, small particle size, and simple preparation method

Active Publication Date: 2012-06-27
昆明理工大学设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that the particle size of the catalyst is small, but the operation process is complicated, and the catalytic efficiency cannot be effectively improved.

Method used

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  • Carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof
  • Carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof
  • Carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A. Plain acrylonitrile graphite cloth with a surface density of 0.20g / cm 2 The graphite fiber cloth is the carbon carrier, the size is 40×40mm 2 The graphite fiber cloth was ultrasonically cleaned with analytical pure acetone for 15 minutes, and then cleaned at 7×10 -3 In a vacuum environment of Pa, ion beam cleaning is carried out to obtain a clean and activated fresh surface. Finally, ion beams are used to bombard platinum targets embedded with several small copper targets, and PtCu particles are deposited on the surface of graphite fiber cloth to prepare carbon-supported nanocrystalline films. Catalyst (PtCu / C);

[0032] B. Place the carbon-supported nanocrystalline thin film catalyst (PtCu / C) obtained in step A in H2 with a mass concentration of 0.50mol / L 2 SO 4 Soak in the solution until the carbon-supported nanocrystalline thin film catalyst is covered, the soaking temperature is 50°C, and the soaking time is 10 minutes;

[0033] C. After the catalyst treat...

Embodiment 2

[0037] A. Plain acrylonitrile graphite cloth with a surface density of 0.20g / cm 2 The graphite fiber cloth is the carbon carrier, the size is 40×40mm 2 The graphite fiber cloth was ultrasonically cleaned with analytical pure acetone for 15 minutes, and then cleaned at 7×10 -3 In a vacuum environment of Pa, ion beam cleaning is carried out to obtain a clean and activated fresh surface. Finally, ion beams are used to bombard platinum targets embedded with several small copper targets, and PtCu particles are deposited on the surface of graphite fiber cloth to prepare carbon-supported nanocrystalline films. Catalyst (PtCu / C);

[0038] B. Place the carbon-supported nanocrystalline thin film catalyst (PtCu / C) obtained in step A in H2 with a mass concentration of 0.75mol / L 2 SO 4 Soak in the solution until the carbon-supported nanocrystalline thin film catalyst is covered, the soaking temperature is 50°C, and the soaking time is 10 minutes;

[0039] C. After the catalyst treat...

Embodiment 3

[0043] A. Plain acrylonitrile graphite cloth with a surface density of 0.20g / cm 2 The graphite fiber cloth is the carbon carrier, the size is 40×40mm 2 The graphite fiber cloth was ultrasonically cleaned with analytical pure acetone for 15 minutes, and then cleaned at 7×10 -3 In a vacuum environment of Pa, ion beam cleaning is carried out to obtain a clean and activated fresh surface. Finally, ion beams are used to bombard platinum targets embedded with several small copper targets, and PtCu particles are deposited on the surface of graphite fiber cloth to prepare carbon-supported nanocrystalline films. Catalyst (PtCu / C);

[0044] B. Place the carbon-supported nanocrystalline thin film catalyst (PtCu / C) obtained in step A in H2 with a mass concentration of 1.00mol / L 2 SO 4 Soak in the solution until the carbon-supported nanocrystalline thin film catalyst is covered, the soaking temperature is 50°C, and the soaking time is 10 minutes;

[0045] C. After the catalyst treat...

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Abstract

The invention provides a carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production and a preparation method of the catalyst. The preparation method comprises the following steps: using graphite fiber as a carbon carrier, carrying out ultrasonic cleaning with analytically pure acetone, carrying out ion beam cleaning under a vacuum environment, and carrying out conventional multi-target ion-beam sputtering deposition to obtain carbon-carrying nanocrystalline film catalyst; and soaking in H2SO4 solution, carrying out ultrasonic cleaning with deionized water, and carrying out constant temperature dry-out treatment in a vacuum environment to obtain the carbon-carrying core-shell type platinoid-platinum catalyst for indirect electrolytic hydrogen production, wherein the Pt content and the Cu content on the carbon carrier of the obtained catalyst are 0.190-0.200mg / cm2 and 0.030-0.080mg / cm2 respectively; and the mass ratio of unit area carbon carrier and reactive metal Pt carried on the carbon carrier is (1,000-1,842):1, and the mass ratio of Pt and Cu carried on unit area carbon carrier is (2.5-6.3):1. According to the invention, the binding of the catalyst particles with the carbon carrier is enhanced, and the catalyst is more stable, so as to improve catalysis efficiency and reduce the usage of noble metals.

Description

technical field [0001] The invention relates to a carbon-loaded core-shell nanocrystalline platinum-copper-platinum thin film catalyst (PtCuPt / C) for indirect electrolytic hydrogen production technology in the coupling process of water electrolysis-organic matter electrocatalytic reduction and a preparation method thereof. Background technique [0002] The hydrogenation reaction of organic matter is an important process in the production fields of food, chemical industry, energy, etc., and its combination with electrolysis of water may become the main hydrogen production method in the future. Compared with electrolytic hydrogen production-catalytic hydrogenation technology, the use of water electrolysis-organic electrocatalytic reduction coupling process to realize organic hydrogenation process has the characteristics of mild reaction conditions and no additional hydrogen source. At present, only carbon-based platinum alloys The dispersed electrode catalyst can be applied in...

Claims

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Application Information

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IPC IPC(8): C25B11/08C25B3/04C25B1/04C25B3/25
CPCY02E60/366Y02E60/36
Inventor 杨滨莘明哲黄能左孝青
Owner 昆明理工大学设计研究院有限公司
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