Synthetic method and application of PtRu binary metal nano-alloy catalyst

A technology of nano-alloy and binary metal, applied in the field of synthesis of PtRu binary metal nano-alloy catalyst

Inactive Publication Date: 2015-10-28
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, few of the reported PtRu binary metal nanoalloy catalysts have both high activity and high stability.

Method used

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  • Synthetic method and application of PtRu binary metal nano-alloy catalyst
  • Synthetic method and application of PtRu binary metal nano-alloy catalyst
  • Synthetic method and application of PtRu binary metal nano-alloy catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Specific implementation 1:

[0025] (1) Add the surfactant and the reducing agent into the aqueous solution at a mass ratio of 2:3, and stir for 15 minutes;

[0026] (2) Add chloroplatinic acid solution and ruthenium trichloride solution with a volume ratio of 3:2 to the mixed solution (5.6mL) in step (1), both at a concentration of 0.1mol / L, and the color of the mixed solution is yellow-brown , stirring at room temperature for 15 minutes;

[0027] (3) Transfer the solution obtained in step (2) into the reactor, react for 2 hours, and control the temperature at about 200°C;

[0028] (4) The obtained product is separated by centrifugation and washed three times with alcohol solution, and then dispersed and stored in alcohol solution, with good dispersibility and general catalytic activity.

[0029] Specific implementation 2:

[0030] (1) Add the surfactant and the reducing agent into the aqueous solution at a mass ratio of 2:3, and stir for 20 minutes;

[0031] (2) A...

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PUM

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Abstract

The invention discloses a PtRu binary metal nano-alloy catalyst which is of a flower-shaped (porous) structure. The synthetic method of the PtRu binary metal nano-alloy catalyst is characterized by comprising the steps that 1, a surface active agent and a reducing agent are added into water together, and stirring is conducted for 10-30 minutes at the indoor temperature, wherein the mass ratio of the surface active agent to the reducing agent is 1:2-2:1, and the amount of added water needs to meet the requirement that both the surface active agent and the reducing agent are completely dissolved in the water; 2, a metallic platinum salt pecursor solution and a metallic ruthenium salt pecursor solution are added in the mixed solution obtained in the first step, and stirring is conducted for 10-30 minutes at the indoor temperature,wherein the volume ratio of the platinum salt pecursor solution to the metallic ruthenium salt pecursor solution is 3:2-2:3, the ratio of the volume of the mixed solution to the total volume of the metallic pecursor solutions is 10:1-20:1, and the concentration of the metal salt precursor solution is 0.05-0.5 mol/L; 3, the mixed solution obtained in the second step is stirred for 5-30 minutes at the indoor temperature, a reaction is conducted in an autoclave for 1.5-3 hours, and the temperature is controlled to be 180-230 DEG C; 4, the product obtained in the third step is cooled and then is washed, and the PtRu binary metal nano-alloy catalyst of the flower-shaped (porous) structure is obtained after centrifugal separation.

Description

technical field [0001] The invention relates to the field of fuel cell catalysts, in particular to the synthesis and application of a PtRu binary metal nano-alloy catalyst. Background technique [0002] Due to its high energy conversion rate and low environmental pollution, fuel cells are conducive to reducing the excessive use of traditional fossil fuels and protecting the global environment. A lot of manpower, material resources, and financial resources have been invested in research. Methanol is a liquid organic compound with the simplest structure at normal temperature and pressure. It is easy to store, convenient to source, and cheap. It is an ideal renewable fuel. Pt catalysts have attracted extensive attention due to their excellent catalytic activity and stability towards methanol. However, due to its scarcity and high price on the earth, the commercial use of fuel cells is greatly limited, and CO, an intermediate oxidation product of methanol, will occupy the acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/40H01M4/92H01M4/88B82Y30/00B82Y40/00
CPCY02E60/50
Inventor 袁强赵伟悦
Owner GUIZHOU UNIV
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