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Photo-thermal synergistic catalysts for selective oxidation of aromatic alcohols to aromatic aldehydes and their applications

A photocatalyst, catalyst technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, preparation of organic compounds, etc., can solve the problem of high pollution preparation process, complex, high energy consumption of aromatic aldehyde and other problems to achieve the effect of low energy consumption, high activity and high stability

Active Publication Date: 2021-09-17
HUAIBEI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to provide a photo-thermal synergistic catalyst for selectively oxidizing aromatic alcohols to obtain aromatic aldehydes and its preparation method and application, aiming to solve the problems of high energy consumption, high pollution and complicated preparation process for the preparation of aromatic aldehydes in industry. question

Method used

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  • Photo-thermal synergistic catalysts for selective oxidation of aromatic alcohols to aromatic aldehydes and their applications
  • Photo-thermal synergistic catalysts for selective oxidation of aromatic alcohols to aromatic aldehydes and their applications
  • Photo-thermal synergistic catalysts for selective oxidation of aromatic alcohols to aromatic aldehydes and their applications

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Embodiment 1

[0025] The invention discloses a photo-thermal synergistic catalyst compounded by a photocatalyst and a thermal catalyst, which is used to selectively oxidize aromatic alcohol to obtain aromatic aldehyde. In this example, the photo-thermal synergistic catalyst CAO / CdS is taken as an example to test the effect of it as a catalyst on the selective oxidation of benzyl alcohol to form benzaldehyde. At the same time, a single photocatalyst CdS nanorod and a thermal catalyst CAO are used as a comparison.

[0026] The preparation method of the photo-thermal synergistic catalyst CAO / CdS in this example is as follows:

[0027] (1) Preparation of photocatalyst CdS nanorods:

[0028] CdS nanorods were synthesized by a solvothermal method, and 15 mmol of Cd(NO 3 ) 2 4H 2 0 and 45mmol of thiourea, then add 60mL of ethylenediamine solution, stir for 30min, wait for the solid to dissolve completely, take out the magnet, put the polytetrafluoroethylene liner in a steel sleeve and seal it, ...

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Abstract

The invention discloses a photo-thermal synergistic catalyst for selectively oxidizing aromatic alcohols to obtain aromatic aldehydes and an application thereof. The photo-thermal synergistic catalyst is composed of a photocatalyst and a thermal catalyst. The catalyst of the invention is used to selectively oxidize aromatic alcohols to obtain aromatic aldehydes, has high stability, high activity, mild reaction conditions, non-toxicity and pollution, and low energy consumption.

Description

technical field [0001] The invention relates to a catalyst for selectively oxidizing aromatic alcohols to obtain aromatic aldehydes. Background technique [0002] Aromatic aldehydes are indispensable intermediates in the synthesis of perfumes, drugs and other fine chemicals, and have great application value in industry. The traditional methods for preparing aromatic aldehydes (chemical oxidation or thermal catalysis) have serious defects and deficiencies, such as the need to use a large amount of toxic or corrosive oxidants (KMnO 4 、Cr IV , ClO - and Cl 2 ), and will consume a lot of energy to maintain the necessary special reaction environment. These defects and deficiencies do not meet the purpose of green chemistry. Due to the inherent advantages of high selectivity, clean power source and mild reaction conditions, the photocatalytic reaction is a very good method for the catalytic oxidation of aromatic alcohols to selectively generate aromatic aldehydes. However, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/047C07C45/38C07C47/54
CPCB01J23/26B01J27/04B01J27/047B01J35/0006B01J35/004C07C45/38C07C47/54
Inventor 孟苏刚常苏生陈士夫
Owner HUAIBEI NORMAL UNIVERSITY