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A kind of multi-kink atom palladium-copper alloy nano chain catalyst preparation method and its product and application

A palladium-copper alloy, catalyst technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of formic acid catalytic oxidation activity and cycle stability are not good enough, and achieve excellent cycle stability , The effect of high repeatability and high practical value

Active Publication Date: 2021-07-02
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used palladium-carbon catalysts are not good enough in terms of catalytic oxidation activity and cycle stability of formic acid to meet the needs of current commercialization.

Method used

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  • A kind of multi-kink atom palladium-copper alloy nano chain catalyst preparation method and its product and application
  • A kind of multi-kink atom palladium-copper alloy nano chain catalyst preparation method and its product and application
  • A kind of multi-kink atom palladium-copper alloy nano chain catalyst preparation method and its product and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of multi-kink atom palladium-copper alloy nano chain catalyst comprises the following steps:

[0034] 1) Add 30.46mg of palladium acetylacetonate (n(Pd)=0.1mol), 19.97mg of copper acetate (n(Cu)=0.1mol), 20mg of PVP, 5mg of citric acid and 10mg of Pluronic F-127 gel into 40ml of ethyl alcohol Ultrasonic mixing in diol solution;

[0035] 2) Transfer the mixture to a 50mL reactor, and feed high-purity nitrogen to saturation, then raise the temperature to 110°C for 3h, then raise the temperature to 170°C for 1.5h, then raise the temperature to 230°C for 1.5h;

[0036] 3) The resulting product is cleaned by centrifugation;

[0037] 4) Add the prepared sample and 30mg XC-72 carbon into ethanol and mix evenly with 100W ultrasound for 30min, then centrifuge and dry at 80°C for 10h.

[0038] figure 1 The transmission electron microscope image of the multi-kink atom palladium-copper alloy nanochain catalyst prepared for this embodiment; it can be clearl...

Embodiment 2

[0044] The preparation method of multi-kink atom palladium-copper alloy nano chain catalyst comprises the following steps:

[0045] 1) Add 30.46mg palladium acetylacetonate (n(Pd)=0.1mol), 3.33mg(n(Cu)=0.016mol) copper acetate, 20mg PVP, 5mg citric acid and 10mg Pluronic F-127 gel to 40ml B Ultrasonic mixing in diol solution;

[0046] 2) Transfer the mixture to a 50mL reaction kettle, and feed high-purity nitrogen to saturation, then raise the temperature to 130°C for 1.5h, then raise the temperature to 150°C for 3h, and then raise the temperature to 210°C for 3h;

[0047] 3) The resulting product is cleaned by centrifugation;

[0048] 4) Add the prepared sample and 30mg of XC-72 carbon into ethanol and mix evenly with 600W ultrasound for 0min, then centrifuge and dry at 60°C for 20h.

[0049] Figure 5 The transmission electron microscope image of the multi-kink atom palladium-copper alloy nanochain catalyst prepared for this embodiment; it can be clearly seen from the fig...

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Abstract

The present invention relates to a preparation method of multi-kink atom palladium-copper alloy nano chain catalyst and its product and application. The preparation method comprises: first adding palladium acetylacetonate, copper acetate, PVP, citric acid and Pluronic F-127 to ethylene glycol solution Ultrasonic mixing in medium to obtain a mixture; then the resulting mixture is passed through nitrogen to saturation, and then the temperature is gradually raised and kept warm, and the product is cleaned by centrifugation; and XC‑72 carbon is added to ethanol and ultrasonically mixed, and then centrifugally dried, more kink atomic palladium copper alloy nanochain catalysts. Compared with the commercial palladium-carbon catalyst, the obtained catalyst has a larger electrochemically active specific surface area, higher catalytic activity for formic acid oxidation and better cycle stability, and the method does not involve the use of highly toxic materials and is easy to operate. High repeatability, suitable for large-scale preparation.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a method for preparing a multi-kink atom palladium-copper alloy nano-chain catalyst, and also relates to a product prepared by the method and its application. Background technique [0002] Direct formic acid fuel cell (DFAFC) has the advantages of low pollution, high energy conversion efficiency, environmental friendliness, easy operation, low noise, etc., and has broad application prospects as automobile power and portable power supply. Formic acid oxidation is an essential anode catalytic reaction for direct formic acid fuel cells. At present, the commonly used palladium-carbon catalysts are not good enough in catalytic oxidation activity and cycle stability of formic acid to meet the needs of current commercialization. In order to accelerate the commercialization of direct formic acid fuel cells, it is particularly important to research and prepare efficient an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/92B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8825H01M4/9041H01M4/921Y02E60/50
Inventor 张连营吴棣本巩玉燕李智吴广磊赵修松
Owner QINGDAO UNIV
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