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Carbon-nanosheet-loaded noble metal nanoparticle catalyst and preparation method and application thereof

A technology of carbon nanosheets and nanoparticles, which is applied in the field of carbon-supported noble metal nanoparticle catalysts and their preparation, and in the field of catalysts. It can solve the problems of cycle stability restricting high performance, improve catalytic efficiency and cycle stability, and have a wide range of raw material sources. Benefits for large-scale implementation

Inactive Publication Date: 2019-09-27
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its cycle stability restricts its continuous performance of high performance.

Method used

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  • Carbon-nanosheet-loaded noble metal nanoparticle catalyst and preparation method and application thereof
  • Carbon-nanosheet-loaded noble metal nanoparticle catalyst and preparation method and application thereof
  • Carbon-nanosheet-loaded noble metal nanoparticle catalyst and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Example 1, 207.4mg RuCl 3 Dissolve in 2mL of deionized water, add 1.22g of sodium oleate under stirring. In order to make the mixture uniform, stir for two hours at 90℃ and add 10g of Na 2 SO 4 , Drying and placing it in a tubular furnace under an inert atmosphere and calcination at 500° C. for 3 hours, and washing and drying the resulting carbon nanosheet-supported Ru nanoparticle catalyst after calcination.

Embodiment 2

[0047] In Example 2, 263.3mg RhCl 3 Dissolve in 2mL of deionized water, add 1.22g of sodium oleate under stirring. In order to make the mixture uniform, stir for two hours at 90℃ and add 10g of Na 2 SO 4 , Dry and put it in a tube furnace under an inert atmosphere and calcine at 500° C. for 3 hours. After calcination, the Rh nanoparticle catalyst supported by the carbon nanosheets obtained is washed and dried. image 3 It is a TEM photo of carbon nanosheets loaded with Rh nanoparticles; a is a low-resolution TEM photo after magnification, b is a normal low-resolution TEM photo, and c is a high-resolution TEM photo.

Embodiment 3

[0048] Example 3, 293.2mgNa 4 Rh 2 (CO 3 ) 4 ·2.5H 2 O was dissolved in 2mL of deionized water, 1.22g of sodium oleate was added under stirring. In order to make the mixture uniform, 10g of Na was added after stirring for two hours at 90℃ 2 SO 4 , Dry and put it in a tube furnace under an inert atmosphere and calcine at 500° C. for 3 hours. After calcination, the Rh nanoparticle catalyst supported by the carbon nanosheets obtained is washed and dried.

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Abstract

The invention discloses a carbon-nanosheet-loaded noble metal nanoparticle catalyst and a preparation method and application thereof. According to the method, an inorganic salt is taken as a template, a commercial carbon source is provided, noble metal at least having multi-catalytic prospects is at least deposited on the commercial carbon precursor to form a composite, then the carbon-nanosheet-loaded noble metal nanoparticle catalyst is obtained by a chemical or physical method; the method is characterized by comprising the following steps: (1) dissolving or dispersing a commercial noble metal precursor in a solvent to form a noble metal precursor solution or suspension; (2) mixing the commercial carbon precursor with the noble metal precursor solution or suspension evenly, then mixing with the inorganic salt template, drying and then calcining in an inert atmosphere to obtain the carbon-nanosheet-loaded noble metal nanoparticle catalyst. According to the catalyst, the problem of instability of noble metal nanoparticles in commercial application can be solved, the catalytic performance is improved significantly, the preparation process is controllable, environmental friendliness is realized, and the catalyst is suitable for mass production.

Description

Technical field [0001] The invention relates to a catalyst, in particular to a carbon-loaded noble metal nano particle catalyst, and a preparation method and application thereof, and belongs to the technical field of energy and materials. Background technique [0002] Because of its excellent chemical stability, precious metals are widely used in fuel cells, catalytic hydrogenation, automobile exhaust gas treatment and other energy and environmental related fields. At present, a large number of researchers are committed to reducing the amount of precious metals to achieve high efficiency and high stable catalytic performance. With the rapid development of nanotechnology, noble metal nanoparticles have higher atomic utilization rates and superior catalytic performance than bulk atoms. But its cycle stability restricts its continued performance of high performance. Stabilizing precious metal nanomaterials on inorganic oxides, metal oxides or carbonaceous supports can effectively i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46B82Y40/00H01M4/92
CPCB01J23/464B01J23/462H01M4/926B82Y40/00B01J35/394Y02E60/50
Inventor 林冲马明洋田景阳吴丰田
Owner EAST CHINA UNIV OF TECH
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