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Method for preparing 5-hydroxymethylfurfural, catalyst thereof and preparation method of catalyst

A technology of hydroxymethylfurfural and catalyst, which is applied in the field of producing 5-hydroxymethylfurfural, can solve the problems of poor catalytic performance of the catalyst, low conversion rate of raw materials, poor cycle stability, etc., and achieve good and excellent catalytic activity. Reproducibility and productivity improvement effect

Inactive Publication Date: 2020-06-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention aims to solve the problems of low conversion rate of raw materials, poor catalytic performance of catalyst, easy deactivation and poor cycle stability in the preparation process of HMF

Method used

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  • Method for preparing 5-hydroxymethylfurfural, catalyst thereof and preparation method of catalyst
  • Method for preparing 5-hydroxymethylfurfural, catalyst thereof and preparation method of catalyst
  • Method for preparing 5-hydroxymethylfurfural, catalyst thereof and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of catalyst:

[0045] (1) Dissolve 0.05mol (14.211g) isopropyl titanate and 0.05mol (19.184g) zirconium n-butoxide in 4mol (240g) isopropanol. Stir the resulting solution uniformly, add 0.02mol (1.96g) phosphoric acid, and then stir for 3h. Then, the solution was allowed to stand at room temperature for 24 hours and then placed in an oven at 110° C. for drying for 12 hours to obtain a gel.

[0046] (2) Calcining the obtained gel at 600° C. for 6 hours to obtain the catalyst. The molar ratio of titanium and zirconium in the catalyst is 1:1, and the doping amount of phosphorus is 20% of the total moles of metal elements.

Embodiment 2～5

[0048] Using the same preparation method as in Example 1, the difference is that the amount of isopropyl titanate in step (1) is 0.01 mol, 0.03 mol, 0.07 mol, 0.09 mol, and the amount of zirconium n-butoxide is 0.09 mol, 0.07 mol, respectively , 0.03mol, 0.01mol, the molar ratios of titanium and zirconium in the catalyst are 1:9, 3:7, 7:3, and 9:1 respectively.

Embodiment 6～8

[0050] The same preparation method as in Example 1 is used, except that the amount of phosphoric acid in step (1) is 0.005 mol, 0.01 mol, and 0.03 mol, respectively. It is obtained that the doping amount of phosphorus in the catalyst is 5%, 10%, and 30% of the total moles of metal elements.

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Abstract

The invention relates to the field of chemical synthesis, and discloses a method for preparing 5-hydroxymethylfurfural, a catalyst thereof and a preparation method of the catalyst, the catalyst is a phosphorylated composite metal oxide, and the doping amount of phosphorus is 5-30% of the total mole number of metal elements in the catalyst; the composite metal oxide is a compound of titanium oxideand zirconium oxide; wherein the molar ratio of titanium to zirconium in the catalyst is 1: 9-9: 1. The catalyst is obtained by the following steps: dissolving titanium salt and zirconium salt, addingphosphoric acid, stirring to obtain gel and roasting. Under the condition of 150-200 DEG C, the catalyst is used for catalyzing carbohydrate in a two-phase solvent to generate 5-hydroxymethylfurfural, and under the catalytic action of the catalyst, high raw material conversion rate and HMF yield can be obtained. The catalyst has the advantages of simple preparation process, high dispersion degreeof each active component element, strong hydrothermal stability, no substantial reduction of the catalytic performance after repeated recycling, and extremely good economy and environmental protection property.

Description

Technical field [0001] The invention relates to the field of chemical synthesis, in particular to a method for preparing 5-hydroxymethyl furfural, a catalyst and a preparation method of the catalyst. Background technique [0002] my country's biomass resources are abundant, but they have not been effectively used for a long time and have caused serious environmental pollution. If my country’s resource-rich biomass can be efficiently transformed into high-value-added chemicals and bio-liquid fuels, it will help solve my country’s energy shortage and environmental problems. 5-Hydroxymethylfurfural (HMF) is a high value-added platform compound that can be produced from biomass sources, and it can be further converted into a series of chemicals and biofuels. Therefore, accelerating the research and development of technologies for the efficient conversion of biomass resources to prepare HMF will promote the optimization of my country's energy structure, ease the pressure on the ecolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18B01J37/08B01J21/06C07D307/46
CPCB01J21/063B01J21/066B01J27/1802B01J37/08C07D307/46Y02P20/584
Inventor 王树荣赵源曲杨朱玲君李允超周劲松岑可法
Owner ZHEJIANG UNIV
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