Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-noble metal catalyst and preparation method

A non-precious metal and catalyst technology, which is applied in the field of non-precious metal catalysts and their preparation, can solve the problems of large particle size of non-precious metal particles, reduce the performance of non-precious metals, and easily agglomerate, so as to improve catalytic activity, inhibit agglomeration growth, and improve catalytic performance. Improved effect

Active Publication Date: 2018-11-30
YANSHAN UNIV
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-noble metal nanoparticles are prone to agglomeration during the preparation process, resulting in the particle size of the generated non-noble metal particles is often relatively large, which has a great impact on the subsequent application of materials and reduces the performance of non-noble metals.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-noble metal catalyst and preparation method
  • Non-noble metal catalyst and preparation method
  • Non-noble metal catalyst and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The invention provides a kind of preparation method of non-precious metal catalyst, comprises the following steps:

[0023] mixing an ethanol-water solvent, a carrier material and a non-noble metal salt to obtain a non-noble metal salt dispersion;

[0024] The non-noble metal salt dispersion liquid is mixed with sodium borohydride solution, a reduction reaction occurs, and the reduction product is washed with water to obtain a non-noble metal catalyst.

[0025] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0026] The present invention mixes ethanol-water solvent, carrier material and non-precious metal salt to obtain non-precious metal salt dispersion; in the present invention, the volume ratio of ethanol and water in the ethanol-water solvent is preferably (2~4):( 1-3), more preferably (2.5-3.5): (1.5-2.5), most preferably (2.8-3.2): (1.8-2.2).

[0027] I...

Embodiment 1

[0052] Mix ethanol and distilled water in a volume ratio of 3:2 to obtain an ethanol-water solvent;

[0053] Dissolve 0.1 g of carbon nanospheres into 50 mL of alcohol-water solvent, ultrasonicate for 60 min, and stir for 30 min to disperse to obtain a mixed solution;

[0054] Dissolve 1 mmol of cobalt acetate in the above mixed solution, sonicate for 30 minutes, and stir at 5°C for 1 hour to obtain a mixed solution of cobalt acetate;

[0055] Add 20 mL of sodium borohydride solution with a concentration of 0.2 mol / L to the cobalt acetate mixed solution, and continue stirring at 5° C. for 10 min until it is completely reduced. Simultaneous precipitation;

[0056] Suction filter the above product, and then wash with distilled water for 3-4 times, the by-product sodium metaborate is dissolved in water and washed off to obtain the washed product;

[0057] The above-mentioned washed product was vacuum freeze-dried at -45°C to obtain a C@Co catalyst.

[0058] figure 1 The trans...

Embodiment 2

[0061] Mix ethanol and distilled water at a volume ratio of 1:1 to obtain an ethanol-water solvent;

[0062] Dissolve 0.1 g of graphene oxide into 100 mL of alcohol-water solvent, ultrasonicate for 30 min, stir for 30 min to disperse, and obtain a mixed solution;

[0063] Dissolve 1 mmol of cobalt chloride in the above mixed solution, sonicate for 30 minutes, and stir at 5°C for 1 hour to obtain a uniform cobalt chloride mixed solution;

[0064] Add 20 mL of sodium borohydride solution with a concentration of 0.125 mol / L to the cobalt acetate mixed solution, and continue stirring at 5° C. for 10 min until it is completely reduced. Simultaneous precipitation;

[0065] Suction filter the above product, and then wash with distilled water for 3-4 times, the by-product sodium metaborate is dissolved in water and washed off to obtain the washed product;

[0066] The above-mentioned washed product was vacuum freeze-dried at -45°C to obtain GO@Co.

[0067] The GO@Co was characteriz...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a non-noble metal catalyst, and the preparation method includes the following steps: mixing an ethanol-water solvent, a carrier material and a non-noblemetal salt to obtain a non-noble metal salt dispersion solution; mixing the non-noble metal salt dispersion solution with a sodium borohydride solution, and performing reducing and water washing to obtain the non-noble metal catalyst. The preparation method adopts the ethanol-water solvent to control the solubility of sodium metaborate generated in the reduction reaction process, the sodium metaborate precipitates accompanied by non-noble metal formation in the reduction process, non-noble metal nanoparticles are isolated, the agglomeration growth of the non-noble metal nanoparticles is significantly inhibited, the particle size of the non-noble metal nanoparticles is effectively reduced, and at the same time the catalytic activity of the non-noble metal catalyst is greatly improved.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a non-noble metal catalyst and a preparation method thereof. Background technique [0002] Non-precious metal catalysts have become the most valuable catalysts due to their convenient preparation process, excellent catalytic performance and recyclability. Non-noble metal catalyst means that the active component of the catalyst is pure metal or alloy. Among them, a pure metal catalyst refers to a catalyst whose active component is composed of one metal atom; an alloy catalyst refers to a catalyst whose active component is composed of two or more metal atoms. Non-noble metal catalysts can be used alone or supported on a carrier, and have many ways of use, and with different ways of use, non-noble metal catalysts also show different catalytic performances. [0003] Non-noble metals are used as solid catalysts. The main factors affecting their adsorption-dissociation p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J23/755B01J37/16C01B3/04
CPCC01B3/04B01J23/75B01J23/755B01J37/16B01J35/399B01J35/393B01J35/23Y02E60/36
Inventor 韩树民张洪明李媛候雪伟冯学雷程立娜
Owner YANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com