A kind of compound doped phosphotungstate catalyzed method for synthesizing 5-hydroxymethylfurfural

A technology of hydroxymethyl furfural and phosphotungstate, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of poor catalyst reusability and product yield. The problems of low rate and high reaction temperature are solved, and the effects of convenient industrial production, simple preparation process and simple separation are achieved.

Active Publication Date: 2019-01-04
SHAOYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing technical solutions still have defects such as high reaction temperature, long reaction time, low product yield, and poor reusability of the catalyst.

Method used

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  • A kind of compound doped phosphotungstate catalyzed method for synthesizing 5-hydroxymethylfurfural
  • A kind of compound doped phosphotungstate catalyzed method for synthesizing 5-hydroxymethylfurfural
  • A kind of compound doped phosphotungstate catalyzed method for synthesizing 5-hydroxymethylfurfural

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Experimental program
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Effect test

Embodiment 1

[0016] Catalyst preparation: Weigh 0.5 mmol of cetyltrimethylammonium chloride, 0.5 mmol of cesium carbonate and 1 mmol of phosphotungstic acid and dissolve them in 20 ml of deionized water; , first slowly add the cetyltrimethylammonium chloride solution to the phosphotungstic acid solution, and then continue to slowly add the cesium carbonate solution to gradually form a white precipitate; after the dropwise addition, continue to stir for 0.5 h, then statically Place and age for 1 h. After the white precipitate is separated by filtration and dried, the molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] 0.5 Cs 0.5 h 2 PW 12 o 40 Composite doped phosphotungstate.

Embodiment 2

[0018] The preparation of catalyst: preparation process is the same as embodiment 1, only changes the add-on of cesium carbonate into 1 mmol, molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] 0.5 Cs 1 h 1.5 PW 12 o 40 Composite doped phosphotungstate.

Embodiment 3

[0020] The preparation of catalyst: preparation process is the same as embodiment 1, only changes the add-on of cesium carbonate into 0.25 mmol, molecular formula can be obtained as [(C 16 h 33 )N(CH 3 ) 3 ] 0.5 Cs 0.25 h 2.25 PW 12 o 40 Composite doped phosphotungstate.

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Abstract

The invention relates to a method for catalytic synthesis of 5-hydroxymethyl furfural from composite doped phosphowolframate. The composite doped phosphowolframate is adopted as a catalyst, fructose dehydration synthesis is performed in an N,N-dimethyl formamide solvent to obtain 5-hydroxymethyl furfural. The structural formula of the adopted composite doped phosphowolframate is shown in the description, wherein R=-C16H33 or -C18H37, x=0.25-1.0, and y=0.25-1.0. The method has the advantages that the composite doped phosphowolframate is high in catalytic activity and good in selectivity, efficient synthesis of 5-hydroxymethyl furfural is achieved, and the catalyst is easy to prepare, easy to separate and capable of being recycled.

Description

technical field [0001] The invention relates to a method for synthesizing 5-hydroxymethylfurfural, in particular to a method for catalytically synthesizing 5-hydroxymethylfurfural with composite doped phosphotungstate. Background technique [0002] At present, the energy used in the world mainly comes from non-renewable resources such as oil, coal and natural gas. With the decrease of fossil resources, the development of sustainable resources has become the focus of the world. Biomass is a sustainable resource that is abundant, cheap, biodegradable, and constantly regenerated. As a new type of biomass-based platform compound, 5-hydroxymethylfurfural and its disubstituted derivatives can be used as one of the excellent substitutes for petroleum fuels. Its monomers can be synthesized with optical activity and biodegradability. It is a special polymer material, and because of its highly active furan ring, aromatic alcohol, and aromatic aldehyde structure, it can be used to pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/46B01J31/18B01J27/188
CPCB01J27/188B01J31/0239B01J31/34C07D307/46
Inventor 张超周喜
Owner SHAOYANG UNIV
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