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

Method for preparation of load type nano metallic catalyst

A catalyst, supported technology, used in chemical instruments and methods, chemical methods for reacting liquids, chemical/physical processes, etc., can solve the problem of uneven distribution of active components, low metal dispersion, and large metal loading. and other problems, to achieve the effect of low cost, high metal dispersion and high catalytic activity

Inactive Publication Date: 2009-06-10
BEIJING UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active components of supported catalysts prepared by traditional preparation methods are often unevenly distributed, the metal dispersion is low, the metal loading is large, and the production cost is high

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
  • Method for preparation of load type nano metallic catalyst
  • Method for preparation of load type nano metallic catalyst
  • Method for preparation of load type nano metallic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weighed sodium borohydride NaBH 4 Dissolve in 200ml deionized water, then add 10g of γ-Al 2 o 3 , transferred to the product storage tank 9 after fully stirring to form a slurry; the weighed chloroplatinic acid H 2 PtCl 6 Dissolve in 50ml deionized water, and transfer the chloroplatinic acid solution to the metal salt solution storage tank 2, start the infusion pump 8, and make NaBH 4 and γ-Al 2 o 3 The mixed slurry circulates between the product storage tank 9 and the tubular reactor 4, the flow rate is 800ml / min, the ultrasonic generator 5 is started, the transmission frequency is set to 60 kHz, the temperature of the water bath is 60°C, and the metering pump 1 is set at 1.0 The rate of ml / min will be H 2 PtCl 6 The solution is injected into the pipeline of the hollow ceramic tube 10 in the tubular reactor 4, H 2 PtCl 6 The solution diffuses through the micropores of the hollow ceramic membrane tube wall 10 to the 4 and γ-Al 2 o 3 In the mixed slurry, when...

Embodiment 2

[0034] Weighed sodium borohydride (NaBH 4 ) was dissolved in 300ml deionized water, and then 15 grams of γ-Al was added 2 o 3 , transferred to the product storage tank 9 after fully stirring to form a slurry; the weighed rhodium chloride (RhCl 3 ) and chloroauric acid (HAuCl 4 ) was dissolved in 100 ml deionized water and transferred to metal salt solution storage tank 2. Start the infusion pump 8 to make NaBH 4 and γ-Al 2 o 3 The mixed slurry circulates between the product storage tank 9 and the tubular reactor 4, the flow rate is 500ml / min, the ultrasonic generator 5 is started, the frequency of the ultrasonic generator is set to 40 kHz, the water bath temperature is 40 °C, and the metering pump 1 Rhodium chloride (RhCl 3 ) and chloroauric acid (HAuCl 4 ) of the mixed solution is injected into the pipeline of the hollow ceramic membrane tube 10 in the tubular reactor 4, RhCl 3 and HAuCl 4 The mixed solution diffuses through the micropores on the wall of the hollow ...

Embodiment 3

[0036]Weighed sodium borohydride NaBH 4 Dissolve in 200ml deionized water, then add 10g of γ-Al 2 o 3 , transferred to the product storage tank 9 after fully stirring to form a slurry; the weighed palladium nitrate (Pd(NO 3 ) 2 2H 2 0) be dissolved in 50ml deionized water, and palladium nitrate solution is transferred in metal salt solution storage tank 2, start infusion pump 8, make NaBH 4 and γ-Al 2 o 3 The mixed slurry circulates between the product storage tank 9 and the tubular reactor 4, the flow rate is 500ml / min, the ultrasonic generator 5 is started, the transmission frequency is set to 120 kHz, the water bath temperature is 60°C, and the metering pump 1 takes 10ml Palladium nitrate solution is injected into the pipeline of the hollow ceramic tube 10 in the tubular reactor 4 at the speed of / min, and the palladium nitrate solution is diffused to contain NaBH by the micropore of hollow ceramic membrane tube wall 10 4 and γ-Al 2 o 3 In the mixed slurry, when th...

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

No PUM Login to View More

Abstract

The present invention belongs to the field of catalyst preparing technology, and is especially supported nanometer metal catalyst preparing process and apparatus. The process includes diffusing metal salt solution from metering pump to mixed slurry solution comprising reductant and carrier material through the micropores in the ceramic film pipe under ultrasonic introduction for metal ion to be adsorbed and reduced in the surface of catalyst carrier, the subsequent centrifugal separation, washing the precipitant with deionized water, stoving and burning to form the supported nanometer metal catalyst. The present invention has the advantages of homogeneous distribution of active catalyst component, small size, high metal dispersion, etc.

Description

technical field [0001] The invention relates to a method for preparing a supported nano catalyst, which belongs to the field of preparing nano catalytic materials. The method for preparing a supported nano catalyst can be used for preparing catalysts for automobile tail gas treatment, hydrogenation catalysts, petroleum refining catalysts and other fine chemicals. Catalyst preparation. Background technique [0002] At present, the traditional preparation methods for preparing supported catalysts mainly include impregnation method, co-precipitation method, ion exchange method and precipitation reduction method. The active components of the supported catalyst prepared by the traditional preparation method are often unevenly distributed, the metal dispersion is low, the metal loading is large, and the production cost is high. In addition to being related to the composition of the catalyst, the activity of the catalyst is also related to the particle size of the catalytically ac...

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 Patents(China)
IPC IPC(8): B01J19/10B01J14/00
Inventor 何洪关晓戴洪兴訾学红
Owner BEIJING 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