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

A method for preparing maleic anhydride by catalytic oxidation of 5-hydroxymethylfurfural

A technology for hydroxymethyl furfural and maleic anhydride is applied in the field of a new catalytic system for catalyzing the oxidation of 5-hydroxymethyl furfural by catalyzing molecular oxygen to prepare maleic anhydride, which can solve problems such as limited direct application range, and achieve obvious creativity and novelty. , mild reaction conditions, high catalytic activity

Active Publication Date: 2016-03-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scope of direct application of 5-hydroxymethylfurfural itself is limited, and the development of downstream target products of 5-hydroxymethylfurfural is an important part of biomass utilization, such as its derivatives 2,5-furandicarboxylic acid and 2,5-diformyl Furan is used as polymer monomer

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
  • A method for preparing maleic anhydride by catalytic oxidation of 5-hydroxymethylfurfural
  • A method for preparing maleic anhydride by catalytic oxidation of 5-hydroxymethylfurfural
  • A method for preparing maleic anhydride by catalytic oxidation of 5-hydroxymethylfurfural

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 0.32g of 5-hydroxymethylfurfural and 5mol% (relative to 5-hydroxymethylfurfural) bismuth oxide into a 35mL reaction kettle, add 2mL of sulfolane, close the kettle, fill it with oxygen at a pressure of 1.0MPa, and heat up to 80°C, and keep it for 6h. It was then cooled to room temperature and carefully depressurized to atmospheric pressure. Transfer all the products to a 25mL volumetric flask, add 2mL internal standard (durene) and then make up to volume. The main product was qualitatively analyzed using GC-MS and gas chromatographic retention times of standard substances. Quantitative analysis of the product was carried out by gas chromatography internal standard method. Calculate the yield of maleic anhydride according to the formula yield of maleic anhydride = (maleic anhydride substance amount) / (the amount of substance added with 5-hydroxymethylfurfural before the reaction). Since water is generated during the oxidation reaction, part of the maleic anhydride g...

Embodiment 2

[0021] Add 0.32g of 5-hydroxymethylfurfural and 2mol% (relative to 5-hydroxymethylfurfural) bismuth nitrate into a 35mL reaction kettle, add 2mL of dimethyl sulfoxide, close the kettle, and fill it with oxygen at a pressure of 0.5MPa. The temperature was raised to 60°C under stirring, and kept for 8h. It was then cooled to room temperature and carefully depressurized to atmospheric pressure. After the treatment with acetic anhydride, transfer all the products to a 25mL volumetric flask, add 2mL of internal standard and then make up to volume. The product was quantitatively analyzed according to the method in Example 1. Calculate the total yield of maleic anhydride to be 38.7%.

Embodiment 3-15

[0023] Bismuth oxide, bismuth hydroxide, bismuth fluoride, bismuth chloride, bismuth bromide, bismuth nitrate, bismuth sulfate, bismuth phosphate, bismuth subcarbonate, bismuth acetate, bismuth ferrite, bismuth titanate, bismuth vanadate, etc. catalytic activity. Reaction conditions: 0.32g 5-hydroxymethylfurfural, 2.5mol% catalyst (relative to 5-hydroxymethylfurfural), 2mL 1,4-dioxane, 1.0MPa oxygen, 100°C, 4h, after the reaction, cool to room temperature, carefully depressurized to atmospheric pressure. After the treatment with acetic anhydride, transfer all the products to a 25mL volumetric flask, add 2mL of internal standard and then make up to volume. Quantitative analysis of product according to the method in embodiment 1, obtains the total yield of maleic anhydride as shown in table 1.

[0024] Table 1 The influence of different bismuth-based catalysts on the yield of maleic anhydride under the same reaction conditions

[0025] Entry

[0026] Conclusion: Bis...

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 relates to a novel catalytic system for preparing maleic anhydride through catalytic oxidation of 5-hydroxymethylfurfural. According to the system, the maleic anhydride is prepared through catalytic selective oxidation of 5-hydroxymethylfurfural by using a bismuth compound as a catalyst and molecular oxygen as an oxidizing agent. According to the system, the 5-hydroxymethylfurfural can be obtained from biomass such as carbohydrates. The system is mild in oxidizing reaction condition, is a novel catalyst system for preparing the maleic anhydride by catalyzing the 5-hydroxymethylfurfural and has an important application prospect.

Description

Technical field: [0001] The invention relates to a method for preparing chemical raw materials, in particular to a new catalytic system for preparing maleic anhydride by catalyzing molecular oxygen oxidation of 5-hydroxymethylfurfural. The invention adopts bismuth compound as catalyst, molecular oxygen as oxidant, and catalyzes liquid-phase oxidation of 5-hydroxymethylfurfural to prepare maleic anhydride. Background technique: [0002] Maleic anhydride (maleic anhydride) is an important organic chemical raw material, mainly used in the production of unsaturated polyester resin, alkyd resin, and also in the production of 1,4-butanediol, γ-butyrolactone, tetrahydrofuran, etc. Chemicals are widely used in pesticides, medicines, coatings, additives and other fields, and are currently one of the three largest anhydrides in the world. [0003] Industrially, maleic anhydride is mainly produced by oxidation of benzene and C4 hydrocarbons. Both benzene and hydrocarbons depend on fo...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/60
CPCC07D307/60
Inventor 徐杰刘俊霞杜中田芦天亮高进苗虹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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