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PtRuCo/C ternary alloy nano catalyst and preparation method thereof

A nano-catalyst and ternary alloy technology, applied in the field of materials, can solve the problems of Pt poisoning, easy occupation and the like, achieve the effects of simple preparation process, not easy to agglomerate, and improve the ability of catalyzing methanol

Active Publication Date: 2012-07-25
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Pt has high catalytic activity for methanol oxidation, but the intermediate product of methanol oxidation (similar to CO) can easily occupy the active sites on the surface of Pt, which can easily poison Pt.

Method used

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  • PtRuCo/C ternary alloy nano catalyst and preparation method thereof
  • PtRuCo/C ternary alloy nano catalyst and preparation method thereof
  • PtRuCo/C ternary alloy nano catalyst and preparation method thereof

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Embodiment 1

[0021] A preparation method of a PtRuCo / C ternary alloy nano-catalyst, comprising the following preparation steps:

[0022] (1) Preparation of carbon paste

[0023] Dissolve 30.6mg of activated carbon in 20ml of aqueous solution, raise the temperature to 40°C, stir with magnetic force, control the stirring rate to 500r / min, and form a carbon slurry after 30min;

[0024] (2), preparation of hydrosol

[0025] Slowly add 6ml of 0.03mM H 2 PtCl 6 , 7.5ml 0.015mM RuCl 3 , 2.5ml 0.005mM CoCl 2 , and then add 15 mg of trisodium citrate as a metal protective agent, stir ultrasonically, control the ultrasonic frequency to 40KHz, and stir for 30min to obtain a hydrosol;

[0026] (3), Preparation of PtRuCo / C

[0027] Use 0.1M NaOH to adjust the pH of the solution to 8 in the hydrosol obtained in step (2), and slowly add 10ml of 0.1M NaBH dropwise at 40°C 4 As a reducing agent, react for 3 hours, vacuum filter, wash with water until there is no chloride ion in the solution, and vac...

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Abstract

The invention discloses a PtRuCo / C ternary alloy nano catalyst and a preparation method thereof, and the method comprises the following steps: dissolving activated carbon in water, boosting the temperature to 40 DEG C, stirring by magnetic force, controlling the stirring velocity at 500r / min to form carbon slurry, dropwise adding H2PtCl6, RuCl3 and CoCl2 solution successively and slowly, adding trisodium citrate as a metal protective agent, carrying out ultrasound agitation, regulating the pH value of the solution to be 8 by NaOH, dropwise adding NaBH4 as a reducing agent slowly, reacting for3h, vacuum filtering, rinsing until no chloride ion exists in the solution, and vacuum drying for 12h at the temperature of 70 DEG C to obtain the PtRuCo / C ternary alloy nano catalyst in the invention. The PtRuCo / C ternary alloy nano catalyst in the invention can greatly improve the ability of catalyzing methanol in fuel cells.

Description

technical field [0001] The invention relates to a PtRuCo / C ternary alloy nano catalyst and a preparation method thereof, belonging to the field of materials. Background technique [0002] Because of its high energy conversion efficiency and low pollution, it is beneficial to reduce the excessive use of fossil fuels and protect the earth's environment. Fuel cells have now attracted widespread attention from researchers from all over the world. Direct methanol fuel cell is a variant of hydrogen proton exchange membrane fuel cell. Methanol is equivalent to a hydrogen storage carrier. Methanol is a liquid organic compound with the simplest structure at normal temperature and pressure. It is easy to store, easy to source, and cheap. An ideal renewable fuel, and there is no C-C bond in the methanol molecule, high electrochemical activity, and can maintain a high energy conversion efficiency. [0003] Pt has high catalytic activity for methanol oxidation, but the intermediate prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J35/02H01M4/90
CPCY02E60/50
Inventor 徐群杰周小金李金光李巧霞
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER