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Metal/metal oxide/doped graphene core-shell type catalyst carrier as well as supported type catalyst and preparation method thereof

A catalyst carrier and oxide technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of poor conductivity and small specific surface area of ​​catalysts, and achieve the effects of improved activity and stability, high safety, and easy operation

Active Publication Date: 2018-07-24
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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  • Metal/metal oxide/doped graphene core-shell type catalyst carrier as well as supported type catalyst and preparation method thereof
  • Metal/metal oxide/doped graphene core-shell type catalyst carrier as well as supported type catalyst and preparation method thereof
  • Metal/metal oxide/doped graphene core-shell type catalyst carrier as well as supported type catalyst and preparation method thereof

Examples

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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 / metal oxide / doped graphene core-shell type catalyst carrier, and discloses a preparation method o the supported type catalyst. The preparation method disclosed by the invention is a method for preparing a graphene coated metal oxide core-shell type catalyst carrier through a simple alcohol-CVD process, and loading metal on the surface of the catalyst carrier with the core-shell structure through a microwave ethylene glycol process, and the method comprises the following specific steps: I, preparing a uniform reaction solution; II, centrifugally washing; III, coating graphene with metal or metal oxide; and IV, preparing the supported type catalyst. The preparation method is mainly used for preparing the metal / metal oxide / doped graphene core-shell type catalyst carrier, and the supported type metal nanoparticle 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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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
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