A kind of imidazole copper catalyst, preparation method and application

A catalyst, imidazole copper technology, applied in the field of preparation of imidazole copper catalyst, can solve the problem of low activity, achieve the effect of simple preparation method, good catalytic activity, and beneficial to industrial production

Inactive Publication Date: 2017-10-31
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to solve the coordination polymer catalysts reported in the literature to the problems such as low activity in the process of selective oxidation of benzyl hydrocarbons

Method used

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  • A kind of imidazole copper catalyst, preparation method and application
  • A kind of imidazole copper catalyst, preparation method and application
  • A kind of imidazole copper catalyst, preparation method and application

Examples

Experimental program
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Effect test

specific example 1

[0030] Specific example 1: Compound Cu(Im) 4 SO 4 Preparation: In a clean beaker, add carbonyldiimidazole (2.2 mmol), copper sulfate (1 mmol), methanol (400 mmol) and water (100 mmol) successively, heat and stir at 55 degrees Celsius for 2 h, cool, filter, The filtrate was slowly evaporated at room temperature, and block single crystals were obtained after 5-7 days. The yield is about 74%.

specific example 2

[0031] Specific example 2: Compound Cu(Im) 4 SO 4 Preparation: In a clean beaker, add carbonyldiimidazole (2.2 mmol), copper sulfate (1.3 mmol), methanol (400 mmol) and water (100 mmol) successively, heat and stir at 55 degrees Celsius for 2 h, cool and filter, The filtrate was slowly evaporated at room temperature, and block single crystals were obtained after 5-7 days. The yield is about 70%.

specific example 3

[0032] Specific example 3: Compound Cu(Im) 4 SO 4 Preparation: In a clean beaker, add carbonyldiimidazole (2.2 mmol), copper sulfate (1 mmol), methanol (500 mmol) and water (100 mmol) successively, heat and stir at 55 degrees Celsius for 2 h, cool and filter, The filtrate was slowly evaporated at room temperature, and block single crystals were obtained after 5-7 days. The yield is about 71%.

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Abstract

The purpose of this invention is to solve the problems reported in the literature that the coordination polymer catalyst has low activity in the process of selective oxidation of benzyl hydrocarbons. Provided are a synthetically recoverable catalyst and a preparation method thereof, capable of achieving the goal of selective oxidation of benzyl hydrocarbon molecules. The design concept of the present invention is as follows: carbonyl diimidazole can be hydrolyzed in water, and then Cu is further reacted with polynitrogen ligand imidazole to construct a metal complex, and an imidazole copper catalyst is synthesized. Metallic Cu catalysts with well-defined structures were applied to the selective catalytic oxidation of benzylic hydrocarbons in order to achieve high conversion and high selectivity.

Description

technical field [0001] The invention belongs to the technical field of catalyst material preparation, and relates to the preparation technology of imidazole copper catalyst, which lays the foundation for its catalytic application. Background technique [0002] Benzophenone compounds are very important fine chemical intermediates, widely used as fragrance fixatives, pharmaceutical intermediates, photosensitizers, ultraviolet absorbers, etc. The routes for industrially synthesizing benzophenones mainly include Friedel-Crafts acylation, carbonylation, and nitric acid oxidation. The Friedel-Crafts acylation method requires 2 to 3 times the stoichiometric amount of halogenated Bronsted acid or Lewis acid, and the reaction process must be absolutely anhydrous. In addition, a large amount of waste acid will be generated after the reaction, which will corrode the equipment and pollute the environment. environment. The important thing is that the catalyst cannot be recycled or uses...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C45/28C07C49/786C07C49/675C07D311/86C07B41/06
CPCY02P20/584
Inventor 崔传生于丽娜孔令凯刘宜昆于关娜
Owner LIAOCHENG UNIV
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