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Nitrogen-doped graphene loaded Pd/Ni catalyst and preparation method thereof

A nitrogen-doped graphene and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as dispersibility, poor stability, easy agglomeration of composite catalysts, and catalytic activity to be improved. , to achieve high stability, high redox catalytic performance, and reduce the effect of agglomeration

Inactive Publication Date: 2017-01-04
刘义林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Above-mentioned two kinds of graphene complex composite palladium catalysts and synthetic method thereof, although the method for having synthesis is simple and easy, the graphene composite palladium catalyst that makes has catalytic efficiency height, but still there is composite catalyst easy agglomeration, dispersibility, stability are relatively Poor disadvantages, and its catalytic activity needs to be improved

Method used

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  • Nitrogen-doped graphene loaded Pd/Ni catalyst and preparation method thereof
  • Nitrogen-doped graphene loaded Pd/Ni catalyst and preparation method thereof
  • Nitrogen-doped graphene loaded Pd/Ni catalyst and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A nitrogen-doped graphene supported Pd / Ni catalyst, prepared from the following components by weight: NiSO 4 ·6H 2 1 part of O, 4 parts of nitrogen-doped graphene, 20 parts of potassium borohydride; also contains an appropriate amount of 0.05mol / L of PdCl 2 solution, so that the molar ratio of Ni to Pd is 1:2;

[0034] Wherein, nitrogen-doped graphene is made by following method:

[0035] Add graphene oxide into an appropriate amount of ammonia water and ultrasonically disperse for 10 minutes, then add the dispersed solution into a hydrothermal reaction kettle, and then react at a temperature of 200°C for 4 hours. Nitrogen-doped graphene was obtained by drying at ℃ for 10 hours; 150 ml of ammonia water was added to every 1 gram of graphene oxide.

[0036] A preparation method of nitrogen-doped graphene supported Pd / Ni catalyst, comprising the following steps:

[0037] a) adding nitrogen-doped graphene to distilled water for ultrasonic treatment to make it uniformly ...

Embodiment 2

[0044] A nitrogen-doped graphene supported Pd / Ni catalyst, prepared from the following components by weight: NiSO 4 ·6H 2 1 part of O, 5 parts of nitrogen-doped graphene, 23 parts of potassium borohydride; also contains an appropriate amount of 0.05mol / L of PdCl 2 solution, so that the molar ratio of Ni to Pd is 1:3;

[0045] Wherein, nitrogen-doped graphene is made by following method:

[0046]Add graphene oxide into an appropriate amount of ammonia water and ultrasonically disperse for 12 minutes, then add the dispersed solution into a hydrothermal reaction kettle, and then react at a temperature of 210°C for 5 hours. Nitrogen-doped graphene was obtained by drying at ℃ for 12 hours; wherein 150 ml of ammonia water was added to 1 gram of graphene oxide.

[0047] A preparation method of nitrogen-doped graphene supported Pd / Ni catalyst, comprising the following steps:

[0048] a) adding nitrogen-doped graphene to distilled water for ultrasonic treatment to make it uniformly...

Embodiment 3

[0055] A nitrogen-doped graphene supported Pd / Ni catalyst, prepared from the following components by weight: NiSO 4 ·6H 2 1 part of O, 6 parts of nitrogen-doped graphene, 25 parts of potassium borohydride; also contains an appropriate amount of 0.05mol / L of PdCl 2 solution, so that the molar ratio of Ni to Pd is 1:4;

[0056] Wherein, nitrogen-doped graphene is made by following method:

[0057] Add graphene oxide into an appropriate amount of ammonia water and ultrasonically disperse for 15 minutes, then add the dispersed solution into a hydrothermal reaction kettle, and then react at a temperature of 250°C for 6 hours. Nitrogen-doped graphene was obtained by drying at ℃ for 14 hours; wherein 150 ml of ammonia water was added to 1 gram of graphene oxide.

[0058] A preparation method of nitrogen-doped graphene supported Pd / Ni catalyst, comprising the following steps:

[0059] a) adding nitrogen-doped graphene to distilled water for ultrasonic treatment to make it uniforml...

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Abstract

The invention discloses a nitrogen-doped graphene loaded Pd / Ni catalyst which is high in catalytic activity, dispersity and stability and excellent in toxin resistance. The nitrogen-doped graphene loaded Pd / Ni catalyst is mainly prepared from NiSO4.6H2O, nitrogen-doped graphene, potassium borohydride, PdCl2 solution and other raw materials. The invention discloses a preparation method of the nitrogen-doped graphene loaded Pd / Ni catalyst. The prepared nitrogen-doped graphene loaded Pd / Ni catalyst has larger desorption peak area, more excellent catalytic activity, higher redox catalytic performance and stability and larger catalyst electrochemical active surface area.

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 / Ni catalyst and a preparation method thereof. Background technique [0002] Catalyst is a kind of substance that can speed up the rate of chemical reaction without changing its own physical and chemical properties. Because it can speed up the reaction rate, the selection and synthesis of reaction catalysis in chemical reactions are widely focused. Due to the electronic arrangement characteristics on the surface of noble metal palladium atoms, it has become an important catalyst in chemical reactions. It has the advantages of high-efficiency catalytic performance, small size, and high surface activity, which has attracted the attention of researchers. The field of application is also expanding, with pivotal issues. However, due to the problems that the traditional nano-palladium catalyst is easy to lose and difficult...

Claims

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/396B01J35/33
Inventor 刘义林
Owner 刘义林
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