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

Preparation method of gold monatomic catalyst

A catalyst and atomic technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low production efficiency and small loading capacity, so as to increase the loading capacity, increase the atomic loading capacity, The effect of high specific surface area

Active Publication Date: 2021-12-03
GUANGDONG UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the problems raised by the background technology, the purpose of the present invention is to propose a method for preparing a gold single-atom catalyst. The preparation process of the gold single-atom catalyst has the advantages of fast efficiency, high stability, simple process, little pollution and high loading capacity. Solve the problems of low production efficiency and small loading capacity of existing gold single-atom catalyst production methods

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
  • Preparation method of gold monatomic catalyst
  • Preparation method of gold monatomic catalyst
  • Preparation method of gold monatomic catalyst

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] A preparation method of a gold single-atom catalyst, comprising the following steps:

[0023] S1: Take the MAX phase, first use hydrofluoric acid to etch the MAX phase, and then perform sonication to obtain the first intermediate product, which is a two-dimensional MXene;

[0024] S2: Take the first intermediate product and add it to AuCl 3 solution, stir evenly to obtain the second intermediate product;

[0025] S3: subjecting the second intermediate product to high-voltage discharge machining for multiple times to obtain a third intermediate product;

[0026] S4: pickling and drying the third intermediate product to obtain a gold single-atom catalyst.

[0027] Gold single-atom catalysts have the advantages of high catalytic efficiency, good stability, and high utilization rate, and their excellent catalytic performance can be attributed to the existence of a single gold atom. The catalytic activity of the catalyst has a significant influence. Gold single-atom cata...

Embodiment 1

[0049] S1: Take the MAX phase, first use hydrofluoric acid to etch the MAX phase, and then perform sonication, the sonication time is 10 minutes, and obtain the first intermediate product, in which the MAX phase is Ti 3 AlC 2 ;

[0050] S2: Take the first intermediate product and add it to AuCl 3 solution, stirred to make it evenly mixed to obtain the second intermediate product, in which AuCl 3 The concentration of the solution is 1mol / L, the first intermediate product and AuCl 3 The mass ratio of the solution is 10:1;

[0051] S3: subjecting the second intermediate product to high-voltage discharge processing, the discharge voltage is 220v, the discharge capacity is 216mF, and the number of discharges is 5 times to obtain the third intermediate product;

[0052] S4: pickling the third intermediate product with 2 mol / L dilute hydrochloric acid, and drying the acid-washed third intermediate product in a vacuum oven to constant weight to obtain a gold single-atom catalyst. ...

Embodiment 2

[0054] S1: Take the MAX phase, first use hydrofluoric acid to etch the MAX phase, and then perform sonication, the sonication time is 10 minutes, and obtain the first intermediate product, in which the MAX phase is Ti 3 AlC 2 ;

[0055] S2: Take the first intermediate product and add it to AuCl 3 solution, stirred to make it evenly mixed to obtain the second intermediate product, in which AuCl 3 The concentration of the solution is 1mol / L, the first intermediate product and AuCl 3 The mass ratio of the solution is 12:1;

[0056] S3: subjecting the second intermediate product to high-voltage discharge processing, the discharge voltage is 220v, the discharge capacity is 216mF, and the number of discharges is 5 times to obtain the third intermediate product;

[0057] S4: pickling the third intermediate product with 2 mol / L dilute hydrochloric acid, and drying the acid-washed third intermediate product in a vacuum oven to constant weight to obtain a gold single-atom catalyst. ...

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
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of catalyst preparation, in particular to a preparation method of a gold monatomic catalyst. The preparation method of the gold monatomic catalyst comprises the following steps: S1, an MAX phase is taken, hydrofluoric acid is used for etching the MAX phase, then sound wave treatment is conducted, a first intermediate product is obtained, and the first intermediate product is two-dimensional MXene; s2, the first intermediate product is added into an AuCl3 solution, and uniformly stirring to obtain a second intermediate product; s3, the second intermediate product is subjected to high-voltage discharge machining for multiple times, and a third intermediate product is obtained; and s4, the third intermediate product is subjected to acid pickling and drying, and the gold monatomic catalyst is prepared. The preparation process of the gold monatomic catalyst has the advantages of rapidness, high efficiency, high stability, simple process, small pollution and high loading capacity, and solves the problems of low production efficiency and small loading capacity of the existing gold monatomic catalyst production method.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method for preparing a gold single-atom catalyst. Background technique [0002] Gold single-atom catalysts, as an atomic-scale catalyst, can be used in a variety of reactions, such as water-gas shift, methanol steam reforming, and ethanol dehydrogenation reactions, and have broad application prospects. A large number of experimental results and theoretical calculations have confirmed that the interaction between the gold atom and the support, and the electronic structure change caused by the charge transfer between the two are the main reasons for the high selectivity and catalytic activity of gold single-atom catalysts. [0003] Common preparation methods of gold single-atom catalysts include co-precipitation, chemical reduction, electrochemical deposition and impregnation. The co-precipitation method is a more economical method for the preparation of gold single-atom cata...

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
IPC IPC(8): B01J27/22B01J35/10B01J37/34
CPCB01J27/22B01J37/342B01J35/33B01J35/61
Inventor 林晗晖陈云贺梓霖罗翔远吴然皓肖嘉薇高增光林琪岱丁树权唐建伟陈新高健陈桪
Owner GUANGDONG UNIV OF TECH
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