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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method of the catalyst is relatively compli

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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

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Example Embodiment

[0038] Example 1:

[0039] 1) Preparation of ~100nm silica balls: Add 15mL of ethyl orthosilicate (TEOS) to a mixed solution consisting of 294mL of ethanol, 24mL of deionized water and 7.5mL of aqueous ammonia (28wt%), and stir at room temperature for 12 hours, Centrifuge the silicon ball and redisperse it into 50 mL isopropanol (HPLC grade), then add 0.1 mL 3-amino-4-hydroxybenzene sulfonic acid (APS), reflux at 70°C for 10 hours, then centrifuge and use the solid part The mixture of anhydrous ethanol and water is cleaned and re-dispersed in 150ml of anhydrous ethanol to obtain a base dispersion after amino modification.

[0040] 2) Preparation of ultra-small platinum nanoparticle film layer on the surface of the silicon ball. Take 3mL of the amino-modified base dispersion prepared in step 1) and add it to a mixture of 20mL of absolute ethanol, 125mL of deionized water and 0.2mL of aqueous ammonia (28wt%), and add 0.3g of dodecyl Sodium benzene sulfonate (SDBS), stir evenly to o...

Example Embodiment

[0042] Example 2:

[0043] 1) Preparation of ~100nm silica balls: Add 15mL of ethyl orthosilicate (TEOS) to a mixed solution consisting of 294mL of ethanol, 24mL of deionized water and 7.5mL of aqueous ammonia (28wt%), and stir at room temperature for 12 hours, Centrifuge the silicon ball and redisperse it into 50 mL isopropanol (HPLC grade), then add 0.1 mL 3-amino-4-hydroxybenzene sulfonic acid (APS), reflux at 70°C for 10 hours, then centrifuge and use the solid part The mixture of anhydrous ethanol and water is cleaned and re-dispersed in 150ml of anhydrous ethanol to obtain a base dispersion after amino modification.

[0044] 2) Preparation of ultra-small platinum nanoparticle film layer on the surface of the silicon ball. Take 3mL of the amino-modified base dispersion prepared in step 1) and add it to a mixture of 20mL of absolute ethanol, 125mL of deionized water and 0.2mL of aqueous ammonia (28wt%), and add 0.3g of dodecyl Sodium benzene sulfonate (SDBS), stir evenly to o...

Example Embodiment

[0046] Example 3:

[0047] 1) Preparation of ~100nm silica balls: Add 15mL of ethyl orthosilicate (TEOS) to a mixed solution consisting of 294mL of ethanol, 24mL of deionized water and 7.5mL of aqueous ammonia (28wt%), and stir at room temperature for 12 hours, Centrifuge the silicon ball and redisperse it into 50 mL isopropanol (HPLC grade), then add 0.1 mL 3-amino-4-hydroxybenzene sulfonic acid (APS), reflux at 70°C for 10 hours, then centrifuge and use the solid part The mixture of anhydrous ethanol and water is cleaned and re-dispersed in 150ml of anhydrous ethanol to obtain a base dispersion after amino modification.

[0048] 2) Preparation of ultra-small platinum nanoparticle film layer on the surface of the silicon ball. Take 3mL of the amino-modified base dispersion prepared in step 1) and add it to a mixture of 20mL of absolute ethanol, 125mL of deionized water and 0.2mL of aqueous ammonia (28wt%), and add 0.3g of dodecyl Sodium benzene sulfonate (SDBS), stir evenly to o...

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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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