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Pd/PdO nano particle loaded carbon nano tube composite material as well as preparation method and application thereof

A technology of carbon nanotubes and nanoparticles, applied in the preparation of organic compounds, preparation of amino hydroxyl compounds, chemical instruments and methods, etc., can solve the problems of catalytic activity to be improved, and achieve easy large-scale production, high activity, and product activity high effect

Active Publication Date: 2015-04-01
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods can successfully load palladium nanoparticles on the surface of carbon nanotubes, there are still various defects
[0004] Moreover, the use of palladium nanoparticle-supported carbon nanotube composites as catalysts in various reactions still needs to be improved.

Method used

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  • Pd/PdO nano particle loaded carbon nano tube composite material as well as preparation method and application thereof
  • Pd/PdO nano particle loaded carbon nano tube composite material as well as preparation method and application thereof
  • Pd/PdO nano particle loaded carbon nano tube composite material as well as preparation method and application thereof

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Embodiment

[0043] This embodiment provides a carbon nanotube composite material supported by Pd / PdO nanoparticles.

[0044] The device used to prepare the Pd / PdO nanoparticle-loaded carbon nanotube composite material is gas-liquid glow plasma reaction equipment, such as figure 1 As shown, the gas-liquid glow plasma reaction equipment is a stainless steel furnace, which is a cylinder with an inner diameter of 70mm and has 4 visible glass windows. Anode, and the stainless steel container cathode of the mixture of carbon nanotubes, palladium nitrate dihydrate, 1-butyl-3-methylimidazolium tetrafluoroborate in the lower position in the furnace, between the anode and the cathode The distance (the distance refers to the distance between the closest planes between the anode and the cathode) is 2-6mm, and the cathode is connected to a DC power supply.

[0045] The preparation method of the carbon nanotube composite material supported by the Pd / PdO nanoparticles comprises the following steps:

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Abstract

The invention provides a Pd / PdO nano particle loaded carbon nano tube composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking a mixture of carbon nano tubes, palladium nitrate bihydrate and 1-butyl-3-methylimidazolium tetrafluoroborate as a cathode of gas-liquid glow plasma reaction, reacting under the electrification conditions of 220-600V and 1-3mA under an argon atmosphere of 210-1000Pa for 5-20 minutes, and preparing to obtain a crude product; washing, performing ultrasonic and centrifugal separation and drying the crude product, thereby obtaining the Pd / PdO nano particle loaded carbon nano tube composite material. The Pd / PdO nano particle loaded carbon nano tube composite material provided by the invention is prepared by the method. The invention also provides application of the Pd / PdO nano particle loaded carbon nano tube composite material serving as a catalyst in a reaction of reducing 4-nitrophenol into 4-aminophenol.

Description

technical field [0001] The invention relates to a carbon nanotube composite material supported by Pd / PdO nanoparticles, a preparation method and application thereof, and belongs to the technical field of nanomaterials. Background technique [0002] As a noble metal, palladium has a wide range of applications in the fields of chemistry and chemical catalysis. However, it is difficult to controlly prepare monodisperse palladium nanoparticles because metal nanoparticles are easy to agglomerate during the preparation and application process. The general treatment method is to load palladium nanoparticles on a carrier. Carbon nanotubes have a relatively large aspect ratio, which can provide more catalytically active surfaces for catalysts. Moreover, carbon nanotubes are not porous and relatively small in size, which is very conducive to the rapid departure of reaction products from the surface of the catalyst, which can reduce the occurrence of the second reaction and make the ...

Claims

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Application Information

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IPC IPC(8): B01J23/44C07C215/76C07C213/02
Inventor 杨帆王春霞李永峰迟成董森
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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