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A doped graphene core-shell catalyst carrier and its preparation method and application

A catalyst carrier, graphene technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of poor conductivity and small specific surface area of ​​catalysts, and achieve improved activity and stability, high safety, experimental equipment and operation. Simple process effect

Active Publication Date: 2021-07-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to solve the problem of poor conductivity and small specific surface area of ​​catalysts with oxides as carriers, and to prepare a novel oxide / graphene core-shell structure with high catalytic activity and large specific surface area. catalyst

Method used

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  • A doped graphene core-shell catalyst carrier and its preparation method and application
  • A doped graphene core-shell catalyst carrier and its preparation method and application
  • A doped graphene core-shell catalyst carrier and its preparation method and application

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Embodiment 1

[0044] A metal oxide / doped graphene core-shell carrier is a catalyst carrier with a uniform graphene layer. The diameter of the metal oxide core is 10nm-400nm, the diameter of the metal particle core is 5nm-100nm, and the thickness of the graphene shell is 2nm-10nm, the content of doping elements is 0.1wt%-10wt%. The metal oxide / doped graphene core-shell catalyst carrier in this embodiment has a relatively high specific surface area, and the number of graphene layers can be effectively controlled.

Embodiment 2

[0046] A metal oxide / doped graphene core-shell carrier is a catalyst carrier with a uniform graphene layer, and the oxide core is CoO, Co 3 o 4 , SiO 2 、TiO 2 , MnO 2 , Fe 2 o 3 , Fe 3 o 4 , NiO, SnO 2 , ZrO 2 , V 2 o 5 、WO 2 、WO 3 , CeO 2 , Nb 2 o 5 、MoO 3 , RuO 2 、 Bi 2 o 3 , GaO 2 , ZnO, Al 2 o 3 A kind of in, other is identical with specific embodiment 1.

Embodiment 3

[0048] A metal core in a metal oxide / doped graphene core-shell carrier is Fe, Co, Ni, Cu, Zn, Pt, Pd, Ru, Ir, Au, Sn, Ag, Rh, Mn, Mo, One or more of Os and Cr, others are the same as in Example 1.

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Abstract

The invention discloses a metal or metal oxide / doped graphene core-shell catalyst carrier, and discloses a preparation method of the above-mentioned supported catalyst. The preparation method disclosed in the present invention is a simple ethanol-CVD method for preparing a graphene-wrapped metal oxide core-shell catalyst carrier method, and a microwave ethylene glycol method to load metal on the surface of a catalyst carrier with a core-shell structure. The specific steps The steps are as follows: 1. Prepare a homogeneous reaction solution; 2. Centrifuge washing; 3. Metal or metal oxide-wrapped graphene; 4. Preparation of supported catalyst. The invention is mainly used for preparing metal or metal oxide / doped graphene core-shell type catalyst carrier loaded metal nano particle catalyst.

Description

technical field [0001] The invention relates to a catalyst carrier with a metal or metal oxide / doped graphene core-shell structure and a preparation method thereof. Background technique [0002] With the increasing speed of human economic development, traditional fossil fuels are gradually unable to meet the requirements of an efficient, clean, safe and economical energy system. At the same time, the environmental problems brought about by traditional fossil fuels are a serious threat to the future survival and development of human beings. , so the development of an environmentally friendly power generation method has been paid more and more attention by people. A fuel cell is the process of converting chemical energy stored in fuel and oxidant directly into electrical energy. As a kind of fuel cell, proton exchange membrane fuel cell (PEMFC), due to its low operating temperature, simple and compact structure, higher energy density and power density than other fuel cells, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCH01M4/9016H01M4/9041H01M4/9083Y02E60/50
Inventor 杜春雨孙雍荣杜磊尹鸽平左朋建程新群马玉林高云智
Owner HARBIN INST OF TECH