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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 easy occupation, Pt poisoning, etc., achieve the effect of not easy to agglomerate, simple preparation process, and improve the ability to catalyze methanol

Active Publication Date: 2010-07-14
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 slurry

[0023] 30.6mg of activated carbon was dissolved in 20ml of aqueous solution, heated to 40°C, magnetically stirred, and the stirring rate was controlled to 500r / min, and carbon slurry was formed after 30min;

[0024] (2), the preparation of hydrosol

[0025] 6ml of 0.03mM H was slowly added dropwise to the carbon slurry obtained in step (1). 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, ultrasonically stir, control the ultrasonic frequency to be 40KHz, and the stirring time is 30min to obtain a hydrosol;

[0026] (3) Preparation of PtRuCo / C

[0027] The pH of the solution obtained in step (2) was adjusted to 8 with 0.1M NaOH, and 10ml of 0.1M NaBH was slowly added dropwise at 40°C. 4 As a reducing agent, react for 3 hours, vacuum filter...

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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 for 3h, 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] Due to the high energy conversion efficiency and low pollution, it is beneficial to reduce the excessive use of fossil fuels and protect the earth's environment. Direct methanol fuel cell is a variant of hydrogen proton exchange membrane fuel cell. Methanol is equivalent to hydrogen storage carrier. Methanol is a liquid organic compound with the simplest structure at normal temperature and pressure. It is simple to store, convenient to source and cheap. An ideal renewable fuel, and there is no C-C bond binding in methanol molecules, high electrochemical activity, and can maintain high energy conversion efficiency. [0003] Pt has high catalytic activity for methanol oxidation, but the oxidation intermediates of methanol (similar to CO) can easily occupy the active sites on the surface of P...

Claims

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Application Information

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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
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