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Method for preparing 2-methylfuran

A technology of methyl furan and catalyst, applied in the field of preparation of 2-methyl furan, can solve the problems of low selectivity, environmental pollution, poor reusability, etc., achieve high activity and selectivity, convenient preparation process, and easy industrial production Effect

Inactive Publication Date: 2017-05-24
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing environmental pollution in the use of Cr-containing Cu-based catalysts for the preparation of 2-methylfuran, using Cu-Co / γ-Al 2 o 3 There is low selectivity and poor reusability, and a method for preparing 2-methylfuran is provided

Method used

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  • Method for preparing 2-methylfuran
  • Method for preparing 2-methylfuran
  • Method for preparing 2-methylfuran

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Experimental program
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specific Embodiment approach 1

[0012] Specific implementation mode one: this implementation mode is a kind of method for preparing 2-methylfuran, specifically completes according to the following steps:

[0013] A nickel phosphide catalyst is used as a catalyst to catalyze the hydrodeoxygenation of furfural to obtain 2-methylfuran.

[0014] Ni with hexagonal spatial structure 2 P has two different Ni sites and P sites, Ni(1) and Ni(2), in its bulk structural unit, where the Ni(1) site has hydrogenolysis activity, while the Ni(2) site has hydrogenation activity, make Ni 2 P catalyst surface It can be used as the hydrogenation active site of furfural hydrodeoxygenation to prepare 2-methylfuran; at the same time, Ni 2 The P-OH group on the surface of P catalyst can be used as Acid centers promote the deoxidation reaction. Therefore, in Ni 2 Metal in P center and Under the synergistic effect of the acid center P-OH, it will be able to efficiently catalyze the selective hydrodeoxygenation of furfural...

specific Embodiment approach 2

[0015] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the nickel phosphide catalyst, furfural and solvent are placed in the autoclave to obtain the mixed material, and hydrogen is used to replace the air in the autoclave, and continue to pass Add hydrogen until the pressure in the autoclave reaches 0.5MPa-3.0MPa, and react with magnetic stirring at a pressure of 0.5MPa-3.0MPa, a temperature of 200-260°C and a hydrogen atmosphere for 4h-12h, and then cool to room temperature to separate phosphorus Nickel catalyst is obtained to obtain 2-methylfuran. Others are the same as the first embodiment.

[0016] This embodiment overcomes the shortcoming of Cr contamination of industrial catalysts.

[0017] The preparation process of 2-methylfuran in this embodiment is convenient;

[0018] The catalyst used in this embodiment has high activity and selectivity, the conversion rate of furfural can reach 100%, and the selectivity of 2-methyl...

specific Embodiment approach 3

[0020] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the volume ratio of the furfural to the solvent is 1:(3-10). Others are the same as in the second embodiment.

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Abstract

The invention relates to a method for preparing 2-methylfuran. The objective of the invention is to solve problems that environmental pollution occurs in existing preparation of 2-methylfuran by using a Cu-based catalyst containing Cr and the selectivity is low and the reusability is poor as Cu-Co / gamma-Al2O3 is used. The method comprises the steps of taking a nickel phosphide catalyst as a catalyst to catalyze furfural to perform hydrodeoxygenation, and obtaining 2-methylfuran. The method has the advantages that a shortcoming of Cr pollution of the industrial catalyst is overcome; activity and selectivity of the catalyst are high, the conversion rate of furfural can reach 100%, and the selectivity of 2-methylfuran is over 83%. The method is used for preparing 2-methylfuran.

Description

technical field [0001] The invention relates to a method for preparing 2-methylfuran. Background technique [0002] 2-Methylfuran is an important organic intermediate, which has important applications in the fields of chemical industry, medicine, pesticide and energy. At the same time, 2-methylfuran has a higher octane number and higher energy density than ethanol, and can be used as a biofuel to replace gasoline. [0003] The use of biomass raw materials to produce 2-methylfuran can not only alleviate the fossil energy crisis, but also conform to the concept of green and sustainable development. The selective hydrodeoxygenation of furfural to prepare 2-methylfuran can effectively utilize a large amount of excess biomass resources. The catalyst used in the production of 2-methylfuran from furfural is a Cu-based catalyst containing Cr. Although the selectivity of 2-methylfuran can reach more than 95%, the presence of Cr ions in the catalyst will also cause environmental pro...

Claims

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Application Information

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IPC IPC(8): C07D307/06
CPCC07D307/06
Inventor 肖林飞刘飞吴伟
Owner HEILONGJIANG UNIV
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