Imidazole-functionalized molybdenum-oxygen cluster catalyst, preparation method and use thereof

A catalyst, the technology of allyl imidazole function, is applied in the field of preparation of N-allyl imidazole functionalized molybdenum oxygen cluster catalyst, can solve the problems of low activity and large amount of catalyst, achieve good catalytic activity, and the preparation method is simple and fast , the effect of easy separation

Inactive Publication Date: 2017-11-14
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to solve the problems of low activity and large amount of catalyst in the selective oxidation process of diphenyl sulfide under hydrogen peroxide as the oxidant of polymetallic oxygen cluster catalyst

Method used

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  • Imidazole-functionalized molybdenum-oxygen cluster catalyst, preparation method and use thereof
  • Imidazole-functionalized molybdenum-oxygen cluster catalyst, preparation method and use thereof
  • Imidazole-functionalized molybdenum-oxygen cluster catalyst, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Compound C 12 h 16 Mo 8 N 4 o 26 4(C 6 h 9 N 2 ) preparation

[0032] In a clean flask, add ammonium molybdate (2mmol), molybdenum trioxide (0.5 mmol) and N-allylimidazole (20 mmol) in turn, stir, and place it in a microwave reactor, set the power to 225W , the reaction time is 15min, after microwave irradiation is completed, filter, and the filtrate is slowly evaporated at room temperature, and colorless crystals are obtained after 15-20 days, with a yield of about 51%.

Embodiment 2

[0033] Example 2: Compound C 12 h 16 Mo 8 N 4 o 26 4(C 6 h 9 N 2 ) preparation

[0034] In a clean flask, add ammonium molybdate (0.5 mmol), molybdenum trioxide (0.5 mmol) and N-allylimidazole (20 mmol) successively, stir, place it in a microwave reactor, set the power to 225W, the reaction time is 15min, after microwave irradiation is completed, filter, and the filtrate is slowly evaporated at room temperature, and colorless crystals are obtained after 15-20 days, with a yield of about 46%.

Embodiment 3

[0035] Example 3: Compound C 12 h 16 Mo 8 N 4 o 26 4(C 6 h 9 N 2 ) preparation

[0036] Add ammonium molybdate (0.7mmol), molybdenum trioxide (0.6mmol) and N-allylimidazole (30mmol) successively in a clean flask, stir, place it in a microwave reactor, set the power to 300W, the reaction time is 20min, after microwave irradiation is completed, filter, and the filtrate is slowly evaporated at room temperature, and colorless crystals are obtained after 15-20 days, with a yield of about 57%.

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Abstract

The invention aims to solve the problems of lower activity, large catalyst dosage and the like of a polyoxometalate cluster catalyst in a selective oxidation process of diphenyl sulfide with hydrogen peroxide as an oxidizing agent, and provides a preparation method for synthesizing novel N-N-allyl imidazole functionalized molybdenum oxygen cluster catalyst which is expected to have better catalysis in selective oxidation of diphenyl sulfide.

Description

technical field [0001] The invention belongs to the technical field of catalyst material preparation, and relates to a preparation technology of an N-allylimidazole functionalized molybdenum oxide cluster catalyst, which lays a foundation for its application in catalyzing thioether oxidation. technical background [0002] Molybdenum oxypolyacid (also known as polymolybdenum oxygen cluster, abbreviated as POMo) is a kind of metal-oxygen cluster (Metal-Oxygen Clusters) compound constructed by Mo transition elements in the framework structure. POMo can be divided into two categories: isopolyanion and heteropolyanion. Due to the diversity of structure, adjustable size and superior physical and chemical properties of POMo, it is widely used in phase transfer chemistry, catalytic activity, photoelectromagnetic functional materials, antibacterial activity, antitumor, antiviral pharmaceutical chemistry, etc. Many fields have broad application prospects and research value. Linking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/12C07C315/02C07C317/14
CPCB01J31/0244B01J31/0252B01J31/12B01J2231/70C07C315/02C07C317/14
Inventor 李成娟孙庆磊孙侠李永新
Owner LIAOCHENG UNIV
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