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Catalytic hydrogenation catalyst and preparation method and application thereof

A catalyst and compound technology, applied in the field of catalytic hydrogenation catalyst and its preparation, can solve the problems of high cost of noble metal catalyst, inconvenient transportation and storage, difficult process control, etc., and achieve good stability, recyclability, easy operation, High-efficiency preparation

Active Publication Date: 2021-05-04
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In previous studies, noble metal catalysts and hydrogen were mostly used as the catalytic system for catalytic hydrogenation reaction, and 5-hydroxymethylfurfural (HMF) was catalyzed to prepare 2,5-furandimethanol (DHMF), and excellent activity results were obtained; but The cost of using noble metal catalysts is high, hydrogen (as a hydrogen source) comes from non-renewable fossil energy sources, and transportation and storage are inconvenient, and there are also potential safety hazards in use
Or use metal-organic framework compound-containing materials as catalysts, but the preparation methods of metal-organic framework compound-containing catalysts are complicated and the process is not easy to control; and good catalytic activity needs to be reflected at a relatively high catalytic temperature (at least 120°C)

Method used

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  • Catalytic hydrogenation catalyst and preparation method and application thereof
  • Catalytic hydrogenation catalyst and preparation method and application thereof
  • Catalytic hydrogenation catalyst and preparation method and application thereof

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Effect test

Embodiment 1

[0051] A catalyst for catalytic hydrogenation comprising metal organic framework compound UIO-66-NH 2 And doped in the metal organic framework compound UIO-66-NH 2 cobalt and copper on.

[0052] The preparation method of above-mentioned catalyst, comprises the following steps:

[0053] Dissolve 0.373g of zirconium chloride and 0.435g of 2-aminoterephthalic acid in 20ml of N,N-dimethylformamide respectively, and dissolve 0.1523g of cobalt chloride hexahydrate and 0.1637g of copper chloride dihydrate in 10ml In N,N-dimethylformamide, stirred at 500rpm for 30 minutes to obtain a mixed solution of zirconium chloride solution, 2-aminoterephthalic acid solution, cobalt chloride hexahydrate and cupric chloride dihydrate, and then Add the 2-aminoterephthalic acid solution dropwise into the zirconium chloride solution at a rate of 4mL / min, mix and stir evenly, then drop the mixed solution of cobalt chloride hexahydrate and copper chloride dihydrate at a rate of 4mL / min Add the above...

Embodiment 2

[0057] A catalyst for catalytic hydrogenation comprising metal organic framework compound UIO-66-NH 2 And doped in the metal organic framework compound UIO-66-NH 2 cobalt and copper on.

[0058] The preparation method of above-mentioned catalyst, comprises the following steps:

[0059] Dissolve 0.373g zirconium chloride and 0.29g 2-aminoterephthalic acid in 20ml N,N-dimethylformamide respectively, dissolve 0.114g cobalt chloride hexahydrate and 0.191g copper chloride dihydrate in 10ml In N,N-dimethylformamide, stirred at 600rpm for 40 minutes to obtain a mixed solution of zirconium chloride solution, 2-aminoterephthalic acid solution, cobalt chloride hexahydrate and cupric chloride dihydrate, and then Add the 2-aminoterephthalic acid solution dropwise into the zirconium chloride solution at a rate of 3mL / min, mix and stir evenly, then drop the mixed solution of cobalt chloride hexahydrate and copper chloride dihydrate at a rate of 3mL / min Add the above solution, mix and sti...

Embodiment 3

[0063] A catalyst for catalytic hydrogenation comprising metal organic framework compound UIO-66-NH 2 And doped in the metal organic framework compound UIO-66-NH 2 cobalt and copper on.

[0064] The preparation method of above-mentioned catalyst, comprises the following steps:

[0065] Dissolve 0.373g of zirconium chloride and 0.29g of 2-aminoterephthalic acid in 20ml of N,N-dimethylformamide respectively, and dissolve 0.076g of cobalt chloride hexahydrate and 0.218g of copper chloride dihydrate in 10ml In N,N-dimethylformamide, stirred at 400rpm for 30 minutes to obtain a mixed solution of zirconium chloride solution, 2-aminoterephthalic acid solution, cobalt chloride hexahydrate and cupric chloride dihydrate, and then Add the 2-aminoterephthalic acid solution dropwise into the zirconium chloride solution at a rate of 4mL / min, mix and stir evenly, then drop the mixed solution of cobalt chloride hexahydrate and copper chloride dihydrate at a rate of 4mL / min Add the above so...

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Abstract

The invention belongs to the technical field of catalyst material preparation, and discloses acatalytic hydrogenationcatalyst and a preparation method and application thereof. The catalyst comprises a metal organic framework compound and two metals doped on the metal organic framework compound, and the two metals are copper and cobalt. The catalyst has high catalytic transfer hydrogenation activity under mild conditions, and shows high conversion rate and high selectivity. The catalyst is applied to catalysis of 5-hydroxymethylfurfural to prepare 2, 5-dimethylolfuran, and the conversion rate of 5-hydroxymethylfurfural is greater than 97% and is as high as 99.5%; and the selectivity of 2, 5-dimethylolfuran is greater than 95% and is as high as 97.7%. The catalyst also has good stability and recyclability. The catalyst is synthesized through a solvothermal reaction and a one-step method, and the preparation method is simple, easy and convenient to operate and high in preparation efficiency.

Description

technical field [0001] The invention belongs to the technical field of catalyst material preparation, and in particular relates to a catalyst for catalytic hydrogenation and its preparation method and application. Background technique [0002] As fossil resources are dwindling, it is important to find alternative sources to produce fuels and chemicals. Biomass resources have attracted more and more researchers' attention because of their wide sources, abundant reserves, and the fact that they can be recycled through photosynthesis and can achieve carbon "zero emissions". 5-Hydroxymethylfurfural (HMF) can be prepared by dehydration of glucose, fructose, etc., and is easy to obtain, and through this preparation method, a large number of high-value-added derivatives can be produced, which has an important platform, so it has been favored by researchers focus on. The products of 5-hydroxymethylfurfural reaction include not only 2,5-furandimethanol (DHMF), which can be applied ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07D307/42
CPCB01J31/2243C07D307/42B01J2531/48B01J2231/643Y02P20/584
Inventor 左建良王璐刘自力郝鹏佟伍镕
Owner GUANGZHOU UNIVERSITY
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