Composite catalytic material, preparation method and application thereof in controllable preparation of dihydroxy/dimethylfuran compound

A technology of catalytic materials and polymers, applied in chemical instruments and methods, chemical/physical processes, organic compound/hydride/coordination complex catalysts, etc., can solve complex catalyst preparation process, numerous operation steps, complex composition, etc. Problems, to achieve good industrial application prospects, improve the effect of economic efficiency

Active Publication Date: 2019-05-21
HUAIYIN TEACHERS COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] CN105712854A discloses a method for selectively preparing 2,5-dimethylolfuran. The method uses a semi-sandwich type Ir complex as a catalyst, formic acid, formate, and hydrogen as a hydrogen source, although it can accumulate at a high yield 2,5-Dihydroxymethylfuran, but it requires a noble metal catalyst and the catalyst preparation process is relatively complicated, and formic acid is highly corrosive, and hydrogen has a great potential safety hazard
[0004] Chinese patent CN106946820A discloses a method for preparing 2,5-dimethylfuran and its etherification products from 5-hydroxymethylfurfural, and the catalyst used in the method is ZrO 2 /Beta1401, ZrO 2 /MCM-41, ZrO 2 /USY and ZnO-ZrO 2 /SBA-15 and other supported catalysts, the preparation process is more cumbersome and the preparation time is longer
[0005] Chinese patent CN108084119A discloses a method for preparing 2,5-dimethylolfuran in a low phase transfer temperature blending system. The method uses a deep eutectic solvent and sodium borohydride as a catalyt

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  • Composite catalytic material, preparation method and application thereof in controllable preparation of dihydroxy/dimethylfuran compound
  • Composite catalytic material, preparation method and application thereof in controllable preparation of dihydroxy/dimethylfuran compound
  • Composite catalytic material, preparation method and application thereof in controllable preparation of dihydroxy/dimethylfuran compound

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Experimental program
Comparison scheme
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Example Embodiment

[0047] The preparation method of the above-mentioned catalytic material includes the following steps:

[0048] Preparation of the carrier: mixing the first metal chloride with an organic solvent to obtain a first mixed solution; mixing an organic phosphonic acid ligand with an organic solvent to obtain a second mixed solution; adding the first mixed solution to the second mixed solution , And then add triethylamine, after the reaction, aging, washing, drying, and pulverizing the generated precipitate to obtain an amorphous mesoporous metal phosphonic acid polymer carrier;

[0049] Active center loading: disperse the amorphous mesoporous metal phosphonic acid polymer carrier in the solution containing the second metal chloride, and then add NaBH 4 The resulting precipitate is washed, dried and pulverized to obtain an active metal-supported amorphous mesoporous metal phosphonic acid polymer catalyst.

[0050] In one embodiment, the molar ratio of the first metal chloride, organic phosp...

Example Embodiment

[0065] Example 1

[0066] Add 10mmol of zirconium tetrachloride and 10mmol of biphenyl-4,4-diphosphonic acid ligand to 400mL of dimethylformamide solvent, stir well until completely dissolved; slowly add the zirconium tetrachloride solution to the organic phosphonic acid In the ligand solution, add 60mmol of triethylamine dropwise to the above mixed solution, continue to stir at room temperature for 4h, warm up to 80℃ and let stand for 4h; after the solid precipitate is separated by filtration, use dimethylformamide Repeated washing with ethanol until no chloride ion is detected; vacuum drying the washed solid precipitate at 80°C for 12 hours, grinding and pulverizing it to about 200 meshes to obtain an amorphous mesoporous metal phosphonic acid polymer carrier; Take 1g of amorphous mesoporous metal phosphonic acid polymer carrier and disperse it in 300mL containing CuCl according to the loading amount 2 In deionized water, ultrasonically stirred for 30 minutes and then continue ...

Example Embodiment

[0069] Example 2

[0070] Add 10mmol of hafnium tetrachloride and 10mmol of hydroxyethylidene diphosphonic acid ligand to 400mL of dimethylformamide solvent, stir thoroughly until completely dissolved; slowly add the hafnium tetrachloride solution to the organic phosphonic acid ligand solution , And then add 60mmol of triethylamine dropwise to the above mixed solution, continue to stir at room temperature for 4 hours, warm to 80 ℃ and stand for 4 hours; the solid precipitate is separated by filtration and washed repeatedly with dimethylformamide and ethanol Until the presence of chloride ions is not detected; the washed solid precipitate is vacuum dried at 80°C for 12 hours, and then ground and crushed to about 200 meshes to obtain an amorphous mesoporous metal phosphonic acid polymer carrier; take 1 g of amorphous The mesoporous metal phosphonic acid polymer carrier is dispersed in 300mL containing CuCl according to the loading amount 2 In deionized water, ultrasonically stirred...

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Abstract

The invention belongs to the field of biomass energy and chemical industry, and relates to a composite catalytic material, a preparation method and application thereof in the controllable preparationof dihydroxy/dimethylfuran compounds. The catalytic material comprises a carrier and an active metal supported on the carrier. The active metal is one of Cu, Ni, Co, Zn, Fe, Al or Sn; and the carrierof the catalyst is an organic phosphonic acid coordination compound of Zr or Hf. The catalyst consists of cheap and easily available non-noble metal and amorphous mesoporous metal phosphonic acid polymer carrier. Meanwhile, the catalyst also has strong carbonyl reduction ability and hydroxyl hydrogenolysis ability. By using renewable organic dihydric alcohol as a high efficiency in situ hydrogen donor and a reaction medium, the use of an external hydrogen donor and other reaction solvents is avoided. By a segmental temperature control method, carbonyl reduction ability and hydroxyl hydrogenolysis ability of the catalyst can be selectively controlled. The controllable preparation of 2,5-dihydroxy methylfuran and 2,5-dimethylfuran is realized according to actual needs.

Description

technical field [0001] The invention belongs to the field of biomass energy chemical industry, and in particular relates to a composite catalytic material, a preparation method and its application in the controllable preparation of dihydroxy / dimethylfuran compounds. Background technique [0002] With the increasingly prominent contradiction between the supply and demand of global fossil resources and the increasing environmental pollution, the use of cheap and renewable biomass resources to prepare high-value-added chemicals and high-quality liquid fuels has attracted widespread attention from many researchers at home and abroad. . 2,5-Dihydroxymethylfuran and 2,5-Dimethylfuran prepared from biomass-based 5-hydroxymethylfurfural through selective hydrogenation are a new class of symmetrical furan compounds with a wide range of uses. Among them, 2,5 dimethylol furan can be used as a monomer to synthesize polyester, polyether and crown ether materials, etc., and can also be...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/10C07D307/36C07D307/42
Inventor 胡磊陈珊吴真许家兴贺爱永蒋叶涛王晓宇
Owner HUAIYIN TEACHERS COLLEGE
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