Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of 2, 5-dimethylfuran

A technology of dimethylfuran and furanaldehyde, which is applied in 2 fields, can solve the problems of high transportation and storage cost, low non-precious metal conversion rate, long reaction time and the like, and achieves high selectivity, good hydrogenation effect and simple process. Effect

Inactive Publication Date: 2018-05-18
XIAMEN UNIV
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reported noble metal catalysts have high activity and good effect, but the high cost limits their application; non-noble metals still have disadvantages such as low conversion rate, poor selectivity, and long reaction time.
At the same time, most of the hydrogen source that catalyzes the hydrogenation of HMF to DMF is hydrogen, the cost of transportation and storage is high, and the solubility of the solvent to hydrogen needs to be considered

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of 2, 5-dimethylfuran
  • Preparation method of 2, 5-dimethylfuran
  • Preparation method of 2, 5-dimethylfuran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 0.18g of 5-formyloxymethylfurfural to 10mL of tetrahydrofuran, then add 400μL of anhydrous formic acid and 0.10g of non-precious metal catalyst A, mix and place in a closed high-pressure reactor, replace with nitrogen 4 to 5 times to exhaust the air, 200 The mixture was heated and stirred at ℃ for 5 hours to carry out hydrodeoxygenation reaction to obtain 2,5-dimethylfuran with a yield of 40.70%.

[0025] Wherein, the mass fraction of nickel and copper accounting for carrier SBA-15 in the non-precious metal catalyst A is 48%, wherein the mass ratio of nickel and copper is 3: 1; the preparation method of catalyst A comprises the following steps: take 0.5g SBA-15, according to The mass fraction of copper and nickel was prepared by preparing nickel nitrate and copper nitrate aqueous solutions, adding them dropwise to molecular sieve SBA-15, mixing them evenly, and impregnating them in equal volumes for 12 hours; drying the impregnated products at 110°C for 10 hours to o...

Embodiment 2

[0027] Add 0.18g of 5-formyloxymethylfurfural to 10mL of tetrahydrofuran, then add 560μL of anhydrous formic acid and 0.10g of non-precious metal catalyst A, mix and place in a closed high-pressure reactor, replace with nitrogen 4 to 5 times to exhaust the air, 220 The mixture was heated and stirred at °C for hydrodeoxygenation reaction for 5 hours to obtain 2,5-dimethylfuran with a yield of 71.04%.

[0028] See Example 1 for the preparation method of non-noble metal catalyst A.

Embodiment 3

[0030] Add 0.18g of 5-formyloxymethylfurfural to 10mL of 1,4-dioxane, then add 400μL of anhydrous formic acid and 0.10g of non-precious metal catalyst A, mix them in a closed autoclave, and replace with nitrogen for 4~ The air was discharged five times, heated and stirred at 220° C. for hydrodeoxygenation reaction for 5 hours to obtain 2,5-dimethylfuran with a yield of 62.73%.

[0031] See Example 1 for the preparation method of non-noble metal catalyst A.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of 2,5-dimethylfuran and relates to 2,5-dimethylfuran. A furan aldehyde compound serving as a substrate is added into an organic solvent to prepare a reaction substrate solution; the reaction substrate solution, anhydrous formic acid and a non-precious-metal catalyst are mixed and put into a reaction kettle, nitrogen gas is used for replacing dischargedair, heating and stirring are conducted for hydrodeoxygenation, and 2,5-dimethylfuran is obtained. The prepared supported non-precious-metal Ni-Cu / SBA-15 serves as a catalyst, formic acid serves as ahydrogen donor, and the furan aldehyde compound is subjected to catalytic transfer hydrogenation to synthesize DMF. The whole process is simple and easy to operate, the cost is low, the reaction system is green, the catalyst is high in activity, the selectivity of DMF is high, the yield is high, and the method has a wide industrial application prospect. Direct use of H2 is avoided, formic acid isused as a hydrogen source, 2,5-dimethylfuran is convenient to store and use, the requirement of a reaction solvent for the hydrogen solubility is reduced, the hydrogenation effect is good, the synthesis method is simple, the method is easy to operate, and energy consumption is low.

Description

technical field [0001] The invention relates to 2,5-dimethylfuran, in particular to a preparation method of 2,5-dimethylfuran. technical background [0002] With the increasing consumption of fossil energy, the development of renewable new energy fuels to replace fossil fuels has become a current research hotspot. Among them, biomass energy is considered to be the most ideal substitute for fossil energy due to its wide source, wide distribution, low cost, and as the only renewable energy containing organic carbon. Currently, the biomass-derived chemical 2,5-dimethylfuran (DMF) is the most extensively researched fuel substitute, with many excellent properties similar to gasoline. For example, DMF has high energy density (30MJ / L) and high octane number (119), its boiling point is 92-94°C, its solubility in water is only 0.26wt%, and it can be miscible with gasoline or used alone. Compared with biofuel ethanol, which is easily soluble in water, difficult to preserve, and has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07D307/36B01J29/03
CPCC07D307/36B01J29/0333
Inventor 孙勇熊彩霞唐兴曾宪海林鹿
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com