Method for preparing nano noble metal hydrogenation catalyst by substitution method and its use

A hydrogenation catalyst, chemical replacement technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as high cost and cumbersome preparation process, and achieve Easy regeneration, simple preparation technology, and the effect of suppressing side reactions

Inactive Publication Date: 2006-05-24
DALIAN UNIV OF TECH
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have their own advantages, but their common disadvantages are that the preparation process is cumbersome and expensive.
[0004] It is a brand-new method to prepare nanoscale noble metal hydrogenation catalysts through the chemical replacement reaction of cheap metal simple substances and noble metal inorganic salts, which has not been reported in any literature yet.

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 preparing nano noble metal hydrogenation catalyst by substitution method and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0043] In a 70 ml autoclave, add 0.1 g of RuCl 3 ? h 2 O, 20-60 milliliters of deionized water, adding metal nickel powder with a particle size of 20-500 microns in the autoclave at a molar ratio of 1:50-1:2000, and filling inert nitrogen gas at normal temperature to replace the air, Punch to 0.5MPa, heat up to 50-80°C, start stirring, react for 1 hour, cool to room temperature, open the kettle, wash the solid in the kettle repeatedly with deionized water, and then prepare the nickel-supported nano-ruthenium catalyst.

[0044] Take 2 grams of the catalyst prepared in the previous step, put it in an autoclave, add 20 ml of benzene, seal the autoclave, replace it with hydrogen, flush the pressure of hydrogen to 1.0 MPa, heat up to 60°C, start stirring, and react for 1 hour. Chromatographic analysis showed 100% conversion of benzene to cyclohexane.

Embodiment 3

[0046] In a 70 ml autoclave, add 0.1 g of RuCl 3 ? h 2 O, 20-60 milliliters of deionized water, metal iron powder with a particle size of 20-500 microns is added to the autoclave at a molar ratio of 1:50-1:2000, and the air is replaced with nitrogen at room temperature, and then stamped to 0.5MPa, heat up to 30-80°C, start stirring, react for 1 hour, cool to room temperature, open the kettle, and wash the solid in the kettle repeatedly with deionized water to prepare the iron-supported nano-ruthenium catalyst.

[0047] Get about 2 grams of catalysts obtained in the previous step and place them in an autoclave, add 20 milliliters of acetone, and other conditions are the same as in Example 2, and 100% of acetone is converted into isopropanol.

Embodiment 4

[0049] In a 100 ml autoclave, add 0.1 g of RuCl 3 ? h 2 O, 40 milliliters of acetone, metal zinc powder with a particle size of 20-500 microns is added to the autoclave at a molar ratio of 1:50-1:2000, and the temperature is raised to 30-60 ℃, after 40 minutes, the reaction was stopped, and the solid in the kettle was repeatedly washed with acetone to obtain a zinc-loaded nano-ruthenium catalyst

[0050] Get about 2 grams of catalysts prepared in the previous step and put them in an autoclave, add 20 milliliters of phenol, the reaction temperature is 90° C., the hydrogen pressure is 2.0 MPa, after reacting for 2 hours, sampling analysis shows that 100% of phenol is converted into cyclohexanol.

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The present invention relates to a method for preparing nano noble metal hydrogenation catalyst by using chemical displacement process and its application. It is characterized by that it utilizes metal elementary substance M and salt of noble metal N and makes them undergo the process of displacement reaction to produce elementary substance N, in which the N represents Ru, Rh, Pd, Pt and Ir or their mixture, M represents Zn, Al, Fe, Co and Ni. When the M is terrifically excess, N/M type metal loaded nano noble metal can be produced; and When the N and M are approximate to stoichiometry, the highly-dispersed nano N colloid can be formed, after the stabilizing agent is added, the load type N/S can be prepared, in which S represents C, Al2O3, SiO2, MgO, ZrO2 and CeO2. Said catalyst can be used for hydrogenation reaction of various compounds.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of high-activity hydrogenation catalysts, and relates to the generation of elemental N through displacement reaction by using a salt of elemental metal M and noble metal N. Wherein N represents Ru, Rh, Pd, Pt, Ir or their mixture, and M represents Zn, Al, Fe, Co, Ni. When M is extremely excessive, N / M-type metal-loaded nano-noble metals are generated; when N and M are close to stoichiometry, highly dispersed nano-N colloids are generated. After adding a stabilizer, the supported N / S can be prepared, where S Represents C, Al 2 o 3 , SiO 2 , MgO, ZrO 2 , CeO 2 . Background technique [0002] Catalytic hydrogenation is one of the most common reactions in chemical production, and noble metal catalysts are one of the most commonly used hydrogenation catalysts. The noble metal catalysts commonly used in heterogeneous hydrogenation are supported, such as Pd / C, Pd / Al 2 o 3 , R...

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): B01J37/03B01J23/40
Inventor 吕连海辛俊娜胡爽袁忠义侯洁王越
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap