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

Carbon microsphere catalyst as well as preparation method and application

A technology of catalysts and carbon microspheres, which is applied in the field of carbon microsphere catalysts and preparations, can solve the problems of difficult coordination between catalyst activity and microwave absorption capacity, poor catalytic conversion effect, etc., and achieve good hydrothermal stability, high possibility, The effect of promoting chemical reactions

Active Publication Date: 2020-12-15
JIANGSU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a carbon microsphere catalyst and its preparation method and application. The method overcomes the defects that the catalytic activity of the catalyst and the microwave absorption ability are difficult to coordinate, and the catalytic conversion effect in water is poor, and the preparation method is simple. The product HMF has high selectivity and has good industrial application prospects

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
  • Carbon microsphere catalyst as well as preparation method and application
  • Carbon microsphere catalyst as well as preparation method and application
  • Carbon microsphere catalyst as well as preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Prepare 100ml of 6mol / L sulfuric acid solution, add 20g of glucose solid to it, stir until dissolved, then transfer the solution to a round bottom flask, heat up the oil bath to 120°C at 200r / min, and reflux for 10h. After cooling, the suction filtered solid was repeatedly washed with deionized water and ethanol to remove the sulfur introduced during the synthesis process and the excess tar attached to the surface of the carbon microspheres, and then dried at 60°C to obtain the carbon microspheres ( 6M / carbon microspheres) catalyst.

[0036] In order to verify the morphology of the synthesized catalysts, SEM characterization analysis was carried out.

[0037] figure 1 Shown is the SEM image of carbon microspheres prepared by 6mol / L sulfuric acid solution. It can be observed from the figure that the carbon source provided by glucose has basically formed carbon microspheres, and the surface of carbon microspheres has relatively abundant pores, which can provide The effe...

example 2

[0039] Add 0.9g of fructose, 0.1g of carbon microspheres and 10ml of deionized water into a microwave reactor, the microwave power is 50W, the reaction time range is 10-50min, and the reaction temperature range is 120-180°C. Microwave assisted temperature rise, and the product was obtained after a period of reaction. Filtration to obtain catalyst and filtrate. The catalyst was washed with deionized water and acetone several times until the filtrate did not change color, and then dried for the next use; the filtrate was sampled for HPLC detection. The result obtained is as Figure 2-6 Shown:

[0040] Figure 2-6 Shown is the effect of reaction conditions on the preparation of HMF from fructose liquefaction catalyzed by carbon microspheres microwave, figure 2 Shown is the change of HMF conversion under the influence of reaction temperature, as can be seen from the figure, with the gradual increase of temperature, the HMF yield increases gradually, and reaches the maximum va...

example 3

[0042] Add 0.05mol (0.9g) of fructose, 0.1g of catalyst and 10ml of deionized water into the microwave reactor, the microwave power is 50W, the reaction temperature is the highest temperature, and the reaction time is 30min. After the reaction is over, the product is obtained, filtered, and obtained catalyst and filtrate. The catalyst was washed with deionized water and acetone several times and then dried for the next use; the filtrate was sampled for HPLC detection. The results obtained are shown in Table 1 and Figure 7 , Figure 8 Shown:

[0043]Table 1 The effect of catalyst types on the preparation of HMF by microwave catalyzed liquefaction of fructose

[0044]

[0045] It can be seen from Table 1 that when using carbon microspheres prepared at 6 mol / L as the catalyst, the HMF yield is the largest at 84.57 mol%, while using carbon microspheres prepared at 3 mol / L as the catalyst, the HMF yield is only 6M / carbon microspheres Half of the yield of HMF was 48.41mol%. ...

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 belongs to the technical field of biomass catalytic conversion, and particularly relates to a carbon microsphere catalyst as well as a preparation method and application thereof. The method comprises the steps of preparing a sulfuric acid solution, adding a glucose solid into the sulfuric acid solution, stirring until the glucose solid is dissolved, transferring the solution into a round-bottom flask, heating to a certain temperature in an oil bath at a certain stirring speed, and carrying out reflux reaction; and cooling, repeatedly washing a solid obtained by suction filtrationwith deionized water and ethanol to remove a sulfur element introduced in the synthesis process and redundant tar attached to the surfaces of the carbon microspheres, and drying to obtain the carbonmicrosphere catalyst. The carbon microsphere catalyst prepared in the invention is simple in preparation method, maintains the advantages of stable chemical properties, high catalytic activity and thelike of the carbon microspheres, and can cooperate with microwaves, so that the carbon microsphere catalyst is more suitable for the conversion process from fructose to HMF.

Description

technical field [0001] The invention belongs to the technical field of biomass catalytic conversion, and in particular relates to a carbon microsphere catalyst, a preparation method and an application. Background technique: [0002] Facing the challenge of fossil fuel depletion, the development of sustainable energy is becoming one of the hottest research fields in this century. Sustainability of biomass resources is of great importance in catalysis, energy storage, environmental remediation, and especially in the synthesis of valuable platform chemicals. Among them, the synthesis of HMF from carbohydrates (e.g., cellulose, sugars) is the most studied reaction and is considered an important step in the resource utilization of biomass, which can produce a variety of valuable chemicals. So far, different catalysts have been developed to maximize HMF production by using sugars as reactants. However, some major disadvantages of the existing reaction system, such as low yield o...

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): B01J35/08B01J21/18C07D307/46C01B32/15C01B32/05
CPCB01J21/18C07D307/46C01B32/05C01B32/15B01J35/51Y02P20/584
Inventor 卜权孔祥海汪梅龙海蓉毛罕平
Owner JIANGSU 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