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Carbon-loaded core-shell platinum-copper-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof

A platinum catalyst, core-shell type technology, applied in the field of carbon-supported core-shell platinum-copper-platinum catalyst for indirect electrolytic hydrogen production and its preparation, can solve the problems of complex operation process and inability to effectively improve catalytic efficiency, and achieve high catalytic efficiency Active, small particle size, enhanced binding effect

Active Publication Date: 2015-08-12
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-loaded core-shell platinum-copper-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof
  • Carbon-loaded core-shell platinum-copper-platinum catalyst for indirect electrolytic hydrogen production and preparation method thereof
  • Carbon-loaded core-shell platinum-copper-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 present invention involves a hydrolyzed electrolytic-organic material electro-catalytic coupling process in the middle of the electrolytic hydrogenation technology for carbon loaded nano-crystal platinum-platinum film catalysts (PTCUPT / C) and its preparation methods. Background technique [0002] Organic hydrogenation reactions are important processes in the production fields of food, chemical industry, energy, and combined with electrolyte hydrogen making may become the main way to make hydrogen -making in the future.Compared with the electrolytic hydrogen-catalytic hydrogenation technology, the use of hydropower electrolytic-organic electrical catalytic coupling process to achieve mild response conditions of the hydrogenation process of organic matter, and no additional hydrogen sources are required. At present, only platinum alloy based on carbon-based bases is based on the base.The decentralized electrode catalyst can be applied in the above -mentio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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