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Nitrogen-doped-graphene-loaded Pd catalyst

A nitrogen-doped graphene and catalyst technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of low catalytic efficiency, uneven distribution of Pd, hindering catalytic efficiency, etc., and achieve excellent catalytic activity, reduced agglomeration, and high oxidation. The effect of reducing catalytic performance

Inactive Publication Date: 2016-12-07
刘义林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Such as the Chinese patent publication number CN105597743A, the date of publication of the patent is May 23, 2016, which discloses a method for preparing a Pd catalyst supported on an alumina carrier. The catalyst prepared by this method is a Pd catalyst supported on an alumina carrier, although this method is A Pd catalyst with good catalytic activity was prepared at a lower heavy metal content, but the presence of alumina support in this catalyst hinders the improvement of catalytic efficiency and the uneven distribution of Pd in ​​the support, which makes the heavy metal Pd prepared by this method Catalysts still have low catalytic efficiency

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Effect test

Embodiment 1

[0039] A nitrogen-doped graphene supported Pd catalyst, made from the following raw materials in parts by weight: 60 parts of nitrogen-doped graphene, PdCl 2 15 parts, 300 parts of potassium borohydride;

[0040] Wherein, nitrogen-doped graphene is made by following method:

[0041] Adding 2700 parts by weight of ammonia to 30 parts by weight of graphene oxide, ultrasonic treatment for a long enough time to make it ink-like; putting the ink-like product and 2650 parts by weight of ammonia into hydrothermal reaction In the kettle, react at a temperature of 200° C. for 4 hours to obtain a nitrogen-doped graphene pre-product; react the nitrogen-doped graphene pre-product at 300° C. for 6 hours to obtain a nitrogen-doped graphene;

[0042] In addition, graphene oxide is produced by hummer method.

[0043] A preparation method of nitrogen-doped graphene supported Pd catalyst, comprising the following steps:

[0044] a) adding nitrogen-doped graphene into distilled water for ultr...

Embodiment 2

[0052] A nitrogen-doped graphene supported Pd catalyst, made from the following raw materials in parts by weight: 80 parts of nitrogen-doped graphene, PdCl 2 25 parts, 317 parts of potassium borohydride;

[0053] Wherein, nitrogen-doped graphene is made by following method:

[0054]Adding 2730 parts by weight of ammonia to 35 parts by weight of graphene oxide, ultrasonic treatment for a long enough time to make it ink-like; putting the ink-like product and 2730 parts by weight of ammonia into hydrothermal reaction In the kettle, react at a temperature of 210° C. for 5 hours to obtain a nitrogen-doped graphene pre-product; react the nitrogen-doped graphene pre-product at 400° C. for 6 hours to obtain a nitrogen-doped graphene;

[0055] In addition, graphene oxide is produced by hummer method.

[0056] A preparation method of nitrogen-doped graphene supported Pd catalyst, comprising the following steps:

[0057] a) adding nitrogen-doped graphene into distilled water for ultra...

Embodiment 3

[0065] A nitrogen-doped graphene supported Pd catalyst, made from the following raw materials in parts by weight: 90 parts of nitrogen-doped graphene, PdCl 2 30 parts, 320 parts of potassium borohydride;

[0066] Wherein, nitrogen-doped graphene is made by following method:

[0067] Adding 2800 parts by weight of ammonia to 35 parts by weight of graphene oxide, ultrasonic treatment for a long enough time to make it ink-like; putting the ink-like product and 2750 parts by weight of ammonia into hydrothermal reaction In the kettle, react at a temperature of 240° C. for 6 hours to obtain a nitrogen-doped graphene pre-product; react the nitrogen-doped graphene pre-product at 600° C. for 7 hours to obtain a nitrogen-doped graphene;

[0068] In addition, graphene oxide is produced by hummer method.

[0069] A preparation method of nitrogen-doped graphene supported Pd catalyst, comprising the following steps:

[0070] a) adding nitrogen-doped graphene into distilled water for ultr...

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Abstract

The invention discloses a nitrogen-doped-graphene-loaded Pd catalyst. The nitrogen-doped-graphene-loaded Pd catalyst is mainly prepared from the following raw materials in parts by weight: 60-90 parts of nitrogen-doped graphene, 15-30 parts of PdCl<2> and 300-320 parts of potassium borohydride. The invention also discloses a preparation method for the nitrogen-doped-graphene-loaded Pd catalyst. The catalyst prepared by the invention has a larger desorption peak area, more excellent catalytic activity, higher oxidation-reduction catalytic performance and stability, and a larger catalyst electrochemical activity surface area, thereby improving the dispersity of Pd nanoparticles and lowering agglomeration of the Pd particles.

Description

technical field [0001] The invention relates to the technical field of catalysts and catalyst synthesis, in particular to a nitrogen-doped graphene supported Pd catalyst. Background technique [0002] With the rapid development of science, the consumption of energy is becoming more and more serious, and the pollution caused is also increasing. We urgently need to find a clean energy that integrates environmental protection, energy saving, and high efficiency. The high conversion rate of the fuel cell, low pollution, wide range of application and attention to research. Among them, the production cost of proton exchange membrane fuel cells using hydrogen as fuel is too high to be commercialized; although direct methanol fuel cells are simple to use and affordable, they are not environmentally friendly due to the strong volatility and toxicity of methanol , is still not ideal. In recent years, formic acid fuel cells, which are non-toxic and have the advantages of methanol fue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/88
CPCH01M4/88H01M4/926Y02E60/50
Inventor 刘义林
Owner 刘义林
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