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Preparation method of metal or metal oxide particle-containing CeO2 fiber catalyst

A technology of metal nanoparticles and oxides, which is applied in the field of preparation of CeO2 fiber catalysts, can solve the problems that have not been reported yet, and achieves the effect of simple and easy preparation method, low cost and broad application prospect.

Inactive Publication Date: 2015-06-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of host-assistant composite nanocatalysts by electrospinning technology has not been reported yet.

Method used

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  • Preparation method of metal or metal oxide particle-containing CeO2 fiber catalyst
  • Preparation method of metal or metal oxide particle-containing CeO2 fiber catalyst
  • Preparation method of metal or metal oxide particle-containing CeO2 fiber catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Weigh 6.0g of cerium nitrate and 10.0g of deionized water and mix them, then magnetically stir for 12 hours to fully hydrolyze the cerium nitrate to obtain CeO 2sol solution; 5.0g polyvinylpyrrolidone (PVP) was dissolved in a mixed solvent of 5.0g dimethyl sulfoxide (DMSO) and 10.0g N,N-dimethylformamide (DMF), stirred on a magnetic stirrer 12h, to form a uniform transparent solution; then 0.3g catalyst palladium chloride (PdCl 2 ) dispersed in 3.0g DMF and ultrasonically treated for 4h to form a uniform and stable solution; finally, these three solutions were mixed and stirred for 0.5h to a uniform liquid, which is the spinning precursor used for electrospinning;

[0036] 2. Inject the electrospinning precursor solution prepared in 1 into the electrospinning device, and prepare a PdCl-loaded 2 CeO 2 / High polymer composite precursor fiber;

[0037] 3. Put the composite precursor fiber prepared in 2 in a crucible and place it in a muffle furnace, heat up to 800°C...

Embodiment 2

[0040] 1. Weigh 6.0g of cerium nitrate and dissolve it in 5.0g of deionized water and 5.0g of ethanol mixed solvent, then stir magnetically for 12 hours to fully hydrolyze the cerium nitrate to obtain CeO 2 sol solution; 50g polyvinylpyrrolidone (PVP) was dissolved in a mixed solvent of 5.0g dimethyl sulfoxide (DMSO) and 10.0g N,N-dimethylformamide (DMF), and stirred on a magnetic stirrer for 12h , to form a homogeneous and transparent solution; then 0.3 g of catalyst palladium chloride (PdCl 2 ) dispersed in 3.0g DMF and ultrasonically treated for 3h to form a uniform and stable solution; finally, these three solutions were mixed and stirred for 0.5h to a uniform liquid, which is the spinning precursor used for electrospinning;

[0041] 2. Inject the electrospinning precursor solution prepared in 1 into the electrospinning device, and prepare a PdCl-loaded 2 CeO 2 / High polymer composite precursor fiber;

[0042] 3. Put the composite precursor fiber prepared in 2 in a cru...

Embodiment 3

[0046] 1. Weigh 6.0g of cerium nitrate and dissolve it in 10.0g of ethanol, then magnetically stir for 12 hours to fully hydrolyze the cerium nitrate to obtain CeO 2 sol solution; 5.0g polyvinylpyrrolidone (PVP) was dissolved in 10.0g ethanol, stirred on a magnetic stirrer for 12h, to form a uniform and transparent solution; then 0.3g catalyst palladium chloride (PdCl 2 ) dispersed in 3.0g DMF and ultrasonically treated for 2h to form a uniform and stable solution; finally, these three solutions were mixed and stirred for 0.5h to a uniform liquid, which is the spinning precursor used for electrospinning;

[0047] 2. Inject the electrospinning precursor solution prepared in 1 into the electrospinning device, and prepare a PdCl-loaded 2 CeO 2 / High polymer composite precursor fiber;

[0048] 3. Put the composite precursor fiber prepared in 2 in a crucible and place it in a muffle furnace, heat up to 800°C for 4 hours in an air atmosphere at a rate of 10°C / min, and calcine for...

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Abstract

The invention discloses a preparation method of a metal or metal oxide particle-containing CeO2 fiber catalyst, and belongs to the field of preparation of nanocatalysts. The novel fiber-based supported catalyst is obtained by adopting a cocatalyst CeO2 fiber as a supporter to support a main catalyst metal or metal oxide nanoparticle. The method comprises the following steps: 1, respectively dissolving a CeO2 precusor, a polymer and a metal or metal salt in a solvent, magnetically stirring, and mixing and stirring to obtain a spinning precursor solution; 2, carrying out an electrostatic spinning technology to make metal or metal CeO2 / polymer supported composite precursor fibers; and 3, carrying out high temperature calcining and hydrogen reduction to obtain the metal or metal oxide nanoparticle / CeO2 fiber supported catalyst. The method is simple and easy, and the metal or metal oxide particle has good dispersibility and large specific surface area; and the catalyst high the characteristics of high catalysis activity and easy recovery, and has wide application prospect in the future catalysis industry.

Description

technical field [0001] The present invention relates to a CeO containing metal or metal oxide particles 2 The invention relates to a preparation method of a fiber catalyst, which belongs to the technical field of nano catalyst preparation. Background technique [0002] In the field of catalysis, common traditional catalysts contain a large amount of noble metals, non-ferrous metals or their oxides. These catalysts are widely used in chemical reactions such as hydrogenation, oxidation, dehydrogenation, methanol cracking, reforming, and shift reactions. However, due to the high price of these noble metals, researchers have been working on how to improve their catalytic activity while reducing the amount of catalyst. and catalytic efficiency, as well as implementing effective recycling. Among them, the nanometerization of these noble metal particles can significantly improve the catalytic activity, but at the same time, due to the high price of nanometer-sized catalyst partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63B01J23/83B01J23/66B01J23/10
Inventor 温世鹏梁美丽刘力张立群
Owner BEIJING UNIV OF CHEM TECH
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