Catalyst for catalytic transfer hydrogenation and preparation method and application thereof

A transfer hydrogenation and catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, catalytic reactions, etc., can solve the problems of by-products, high temperature and pressure, and catalyst reactions Low activity and other problems, to achieve the effect of high catalytic transfer hydrogenation activity, high selectivity, and good application prospects

Active Publication Date: 2020-12-25
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many difficulties in the current catalytic transfer hydrogenation reaction, such as low catalyst reactivity, higher temperature and pressure for the reaction, and easy generation of by-products, etc.

Method used

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  • Catalyst for catalytic transfer hydrogenation and preparation method and application thereof
  • Catalyst for catalytic transfer hydrogenation and preparation method and application thereof
  • Catalyst for catalytic transfer hydrogenation and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dissolve 1.119g of zirconium chloride and 0.87g of 2-aminoterephthalic acid in 60ml of N,N-dimethylformamide respectively, and stir at 400rpm for 30 minutes to obtain zirconium chloride solution and 2-aminoterephthalic acid Terephthalic acid solution, then 2-aminoterephthalic acid solution was added dropwise to the zirconium chloride solution at a speed of 5mL / min, after mixing and stirring evenly, 28ml of glacial acetic acid solution was added thereto, and after stirring for 30 minutes, Ultrasonic treatment at 200W for another 20 minutes to obtain a mixed solution; then transfer the mixed solution to a stainless steel sealed polytetrafluoroethylene reactor and react at 120°C for 24 hours. After the reactor is cooled, the reaction solution is centrifuged. The obtained solid was washed three times with N,N-dimethylformamide and methanol, and the precipitate was dried in vacuum at 60°C for 24 hours to obtain the precursor UIO-66-NH 2 .

[0040](2) Take 0.247g cobalt ...

Embodiment 2

[0042] (1) Dissolve 1.119g of zirconium chloride and 1.305g of 2-aminoterephthalic acid in 60ml of N,N-dimethylformamide respectively, stir at 300rpm for 40 minutes to obtain zirconium chloride solution and 2-aminoterephthalic acid Terephthalic acid solution, and then 2-aminoterephthalic acid solution was added dropwise to the zirconium chloride solution at a speed of 4mL / min. After mixing and stirring evenly, 28ml of glacial acetic acid solution was added thereto, and after stirring for 45 minutes, the The power is 300W and then ultrasonic treatment for 15min to obtain the mixed solution, and then the mixed solution is transferred to a stainless steel sealed polytetrafluoroethylene reactor, and reacted at 120°C for 48 hours, after the reactor is cooled, the reaction solution is centrifuged to obtain The solid was washed three times with N,N-dimethylformamide and ethanol, and the precipitate was vacuum-dried at 80°C for 12 hours to obtain the precursor UIO-66-NH 2 .

[0043] ...

Embodiment 3

[0045] (1) Dissolve 1.119g of zirconium chloride and 0.87g of 2-aminoterephthalic acid in 60ml of N,N-dimethylformamide respectively, and stir at 400rpm for 30 minutes to obtain zirconium chloride solution and 2-aminoterephthalic acid Terephthalic acid solution, and then 2-aminoterephthalic acid solution was added dropwise to the zirconium chloride solution at a speed of 5mL / min. After mixing and stirring evenly, 28ml of glacial acetic acid solution was added thereto, and after stirring for 30 minutes, the The power is 400W and then ultrasonic treatment for 10min to obtain the mixed solution, then the mixed solution is transferred to a stainless steel sealed polytetrafluoroethylene reactor, and reacted at 120°C for 24 hours, after the reactor is cooled, the reaction solution is centrifuged to obtain The solid was washed three times with N,N-dimethylformamide and methanol, and the precipitate was vacuum-dried at 60°C for 24 hours to obtain the precursor UIO-66-NH 2 .

[0046] ...

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Abstract

The invention belongs to the technical field of catalyst material preparation, and discloses a catalyst for catalytic transfer hydrogenation and a preparation method and application thereof. The catalyst comprises a metal organic framework compound and metal cobalt loaded on the metal organic framework compound, and the loading capacity of the metal cobalt is 6%-35%. According to the catalyst provided by the invention, the MOFs material is selected to load metal cobalt, so that the catalyst has high activity and high selectivity; the catalyst has strong stability and a stable skeleton structure, and does not collapse to influence the catalytic effect. When the catalyst provided by the invention is used for catalyzing 5-hydroxymethyl furfural to prepare 2, 5-dihydroxymethyl furan, the catalyst still shows high activity when a solvent is used as a hydrogen donor, the reaction temperature is relatively low and the reaction time is relatively short, the conversion rate of HMF is as high as98.5%, and the selectivity of DHMF is as high as 95.6%. The preparation method of the catalyst provided by the invention is simple, easy to operate, low in equipment requirement and low in synthesiscost.

Description

technical field [0001] The invention belongs to the technical field of catalyst material preparation, and in particular relates to a catalyst for catalytic transfer hydrogenation and its preparation method and application. Background technique [0002] With the gradual increase in the global demand for products, the continuous reduction of global fossil resources, and the increasing concern about environmental pollution and carbon emissions, it is very urgent to find renewable resources and reduce dependence on non-renewable fossil resources. Biomass resources and their derivatives have attracted much attention because of their wide range of sources and their renewable nature. Among various biomass derivatives, 5-hydroxymethylfurfural (HMF), which can be obtained by dehydration of glucose, fructose, starch and cellulose, is considered to be one of the most important platform compounds. 5-Hydroxymethylfurfural can be converted into a large number of high value-added chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07D307/42
CPCB01J31/1691B01J31/223C07D307/42B01J2531/48B01J2231/643
Inventor 左建良王璐刘自力张庆钍郝鹏
Owner GUANGZHOU UNIVERSITY
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