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Method for preparing organic hydrogenation catalyst based on noble metal nanoparticles

A nanoparticle and hydrogenation reaction technology, applied in the field of nanomaterials, can solve the problems of complex catalyst preparation methods and unoptimized catalytic activity, and achieve excellent catalytic activity

Active Publication Date: 2016-11-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of the catalyst is relatively complicated, and the catalytic activity has not yet been optimized

Method used

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  • Method for preparing organic hydrogenation catalyst based on noble metal nanoparticles
  • Method for preparing organic hydrogenation catalyst based on noble metal nanoparticles
  • Method for preparing organic hydrogenation catalyst based on noble metal nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Preparation of ~100nm silica spheres: Add 15mL tetraethyl orthosilicate (TEOS) into a mixed solution consisting of 294mL ethanol, 24mL deionized water and 7.5mL ammonia solution (28wt%), and stir at room temperature for 12 hours. The silica spheres were centrifuged and redispersed into 50 mL of isopropanol (HPLC grade), then added 0.1 mL of 3-amino-4-hydroxybenzenesulfonic acid (APS), refluxed at 70 °C for 10 hours, then centrifuged, and the solid part was used Wash with a mixture of absolute ethanol and water, and redisperse in 150 ml of absolute ethanol to obtain an amino-modified substrate dispersion.

[0040] 2) Prepare an ultra-small platinum nanoparticle film layer on the surface of the silicon sphere. Take 3mL of the amino-modified substrate dispersion prepared in step 1), add it to a mixture of 20mL absolute ethanol, 125mL deionized water and 0.2mL ammonia solution (28wt%), add 0.3g dodecyl Sodium benzenesulfonate (SDBS), stirred evenly to obtain the base mi...

Embodiment 2

[0043] 1) Preparation of ~100nm silica spheres: Add 15mL tetraethyl orthosilicate (TEOS) into a mixed solution consisting of 294mL ethanol, 24mL deionized water and 7.5mL ammonia solution (28wt%), and stir at room temperature for 12 hours. The silica spheres were centrifuged and redispersed into 50 mL of isopropanol (HPLC grade), then added 0.1 mL of 3-amino-4-hydroxybenzenesulfonic acid (APS), refluxed at 70 °C for 10 hours, then centrifuged, and the solid part was used Wash with a mixture of absolute ethanol and water, and redisperse in 150 ml of absolute ethanol to obtain an amino-modified substrate dispersion.

[0044] 2) Prepare an ultra-small platinum nanoparticle film layer on the surface of the silicon sphere. Take 3mL of the amino-modified substrate dispersion prepared in step 1), add it to a mixture of 20mL absolute ethanol, 125mL deionized water and 0.2mL ammonia solution (28wt%), add 0.3g dodecyl Sodium benzenesulfonate (SDBS), stirred evenly to obtain the base mi...

Embodiment 3

[0047] 1) Preparation of ~100nm silica spheres: Add 15mL tetraethyl orthosilicate (TEOS) into a mixed solution consisting of 294mL ethanol, 24mL deionized water and 7.5mL ammonia solution (28wt%), and stir at room temperature for 12 hours. The silica spheres were centrifuged and redispersed into 50 mL of isopropanol (HPLC grade), then added 0.1 mL of 3-amino-4-hydroxybenzenesulfonic acid (APS), refluxed at 70 °C for 10 hours, then centrifuged, and the solid part was used Wash with a mixture of absolute ethanol and water, and redisperse in 150 ml of absolute ethanol to obtain an amino-modified substrate dispersion.

[0048] 2) Prepare an ultra-small platinum nanoparticle film layer on the surface of the silicon sphere. Take 3mL of the amino-modified substrate dispersion prepared in step 1), add it to a mixture of 20mL absolute ethanol, 125mL deionized water and 0.2mL ammonia solution (28wt%), add 0.3g dodecyl Sodium benzenesulfonate (SDBS), stirred evenly to obtain the base mi...

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Abstract

The invention discloses a method for preparing an organic hydrogenation catalyst based on noble metal nanoparticles. The method is as below: first conducting amino modification on a substrate material, and then preparing a noble metal nanoparticles layer on the amino modified substrate material, so as to obtain the organic hydrogenation catalyst based on noble metal nanoparticles. The method can load ultra small noble metal nanoparticles with a variety of particle sizes on a variety of substrate surface, and the particle size can be precisely controlled; and the catalyst shows excellent catalytic activity in organic hydrogenation. The method can prepare novel noble metal nano catalyst based on ultra small size, so as to achieve hydrogenation activity much higher than that of conventional catalyst materials.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a method for preparing an organic hydrogenation reaction catalyst based on noble metal nanoparticles. Background technique [0002] In organic synthesis reactions, hydrogenation is a common industrial reaction with important economic value. However, many hydrogenation reactions, such as the selective hydrogenation of nitrogen-containing heterocycles in quinoline molecules, often require high The reaction temperature (40 ~ 200 ℃) and hydrogen pressure (1 ~ 4MPa). The reaction conditions of high temperature and high pressure increase energy consumption and investment in reaction equipment on the one hand, and on the other hand, bring safety hazards to industrial production. Therefore, the development of efficient catalysts for organic hydrogenation reactions is expected to significantly reduce the temperature and pressure required for such reactions, which not only h...

Claims

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Application Information

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IPC IPC(8): B01J23/42B01J23/44B01J29/035C07D215/18C07D215/20C07D215/06
CPCC07D215/06C07D215/18C07D215/20B01J23/42B01J23/44B01J29/0354
Inventor 高传博白力诚陈强
Owner XI AN JIAOTONG UNIV
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