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Method for preparing aldehyde or ketone compounds with catalytic oxidation of alcohol compounds

A ketone compound, catalytic oxidation technology, applied in the direction of carbon-based compound preparation, organic compound preparation, chemical instruments and methods, etc., can solve the problem of expensive catalysts, achieve easy separation and recycling, low cost, and wide application range wide effect

Inactive Publication Date: 2008-10-29
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Palladium is a rare and precious metal, and the catalyst is expensive

Method used

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  • Method for preparing aldehyde or ketone compounds with catalytic oxidation of alcohol compounds
  • Method for preparing aldehyde or ketone compounds with catalytic oxidation of alcohol compounds
  • Method for preparing aldehyde or ketone compounds with catalytic oxidation of alcohol compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Preparation of carbon nanotube-supported ruthenium catalyst

[0016] The carbon nanotubes used in the experiment were purchased from Shenzhen Nano Harbor Co., Ltd., and their specific surface area is about 160 m 2 / g. Use the modulated H before using 2 SO 4 -HNO 3 The oxidation treatment method introduces oxygen-containing functional groups on CNTs. The experimental method is as follows: 10 g of carbon nanotubes were placed in a 250 mL round bottom flask, and 50 mL of H 2 O, 100mL HNO 3 , 50mL H 2 SO 4 , ultrasonically dispersed for 10 minutes, and then refluxed at 120°C for 4 hours under magnetic stirring conditions. After reflux, filter and wash with distilled water until neutral, and dry under vacuum at 130°C; grind for later use, and store in a desiccator.

[0017] with RuCl 3 Ru / CNTs catalyst was prepared by impregnation method as the precursor of ruthenium, mixed acid-functionalized carbon nanotubes as the catalyst carrier. The experimental method is...

Embodiment 2

[0023] 1. Preparation of activated carbon-supported ruthenium catalyst

[0024] The activated carbon used in the experiment is coconut shell activated carbon, purchased from Beijing Yuanda Integrated Activated Carbon Company, and its specific surface area is about 1000m 2 / g. Grind the commercial coconut shell activated carbon before use, and then use a standard sieve to sieve the activated carbon with the required mesh (200-320 mesh) for later use.

[0025] Modulated H 2 SO 4 -HNO 3 Oxidation treatment method introduces oxygen-containing functional groups on activated carbon. The experimental method is as follows: Weigh 10 g of activated carbon with the required mesh number (200-320 mesh) and place it in a 250 mL round bottom flask, add 50 mL H 2 O, 100mL HNO 3 , 50mL H 2 SO 4 , ultrasonically dispersed for 10 minutes, and then refluxed at 120°C for 4 hours under magnetic stirring conditions. After reflux, filter and wash with distilled water until neutral, and dry u...

Embodiment 3

[0030] 1. Preparation of titanium dioxide supported ruthenium catalyst

[0031] Titanium dioxide (P25) used in the experiment was purchased from Shanghai Haiyi Science and Trade Co., Ltd., and its specific surface area is about 50m 2 / g.

[0032] with RuCl 3 As the precursor of ruthenium, mixed acid functionalized activated carbon was used as the catalyst carrier, and the Ru / CNTs catalyst was prepared by impregnation method. The experimental method is as follows: measure 6mL RuCl 3 (0.10M) into a 100mL small beaker, add 1g of titanium dioxide (P25); ultrasonically disperse for 30min; age at room temperature for 24h; vacuum dry at 110°C for 12h; grind to obtain RuCl 3 / TiO 2 Sample; 400°C, hydrogen atmosphere activation for 2h, heating rate of 3°C / min, and finally passivation in argon atmosphere to room temperature to obtain 6.0wt% Ru / TiO 2 catalyst.

[0033] 2. Oxidation of Benzyl Alcohol Catalyzed by Titanium Dioxide Supported Ru Catalyst

[0034] Weigh 0.2g 6.0wt%Ru / T...

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Abstract

The invention relates to a method for preparing aldehyde or ketone compound by catalytic oxidation. The method comprises adding high-activity Ru-supported catalyst, water, mixed organic solvent and alcohol compound into a reactor; reacting under normal pressure at 30-100 DEG C for 1-12 hours while introducing oxygen or air; standing after the reaction is finished to automatically demix two phases of water and oil, wherein the catalyst is in the water phase; and separating the upper organic phase to obtain the aldehyde or ketone compound. The conversion rate of the alcohol compound is 10-100%, and the selectivity of the aldehyde or ketone compound reaches 100%. The method is characterized by simple process, low production cost, environment friendliness and easy separation and reutilization of catalyst.

Description

technical field [0001] The invention relates to a method for preparing aldehyde or ketone compounds by catalytically oxidizing alcohol compounds. Background technique [0002] Liquid-phase oxidation of alcohols to aldehydes or ketones is an important and challenging reaction. Traditional oxidation methods mainly use stoichiometric oxidants such as dichromate and permanganate to oxidize alcohol compounds. This process produces a large amount of heavy metal salt pollutants, which is not an environmentally friendly method. In recent years, the green catalytic process using hydrogen peroxide and oxygen as oxidants has begun to attract people's attention, and the oxidation process using oxygen or air as oxidant has attracted much attention due to its high atom economy. In the field of oxygen or air oxidation of alcohol compounds, currently used catalytic systems include homogeneous catalytic reaction systems and heterogeneous catalytic reaction systems. Most homogeneous catalyt...

Claims

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Application Information

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IPC IPC(8): C07B41/06C07C45/37C07D333/22C07D213/46B01J23/46
Inventor 邱介山杨晓敏
Owner DALIAN UNIV OF TECH
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