A kind of preparation method of porous carbon material

A porous carbon material and glue technology, applied in carbon preparation/purification, etc., can solve the problems of difficult to obtain raw materials, complex synthesis process, long synthesis cycle, etc., and achieve high product yield and purity, simple process and easy to obtain Effect

Inactive Publication Date: 2019-07-30
QINGDAO UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the existing porous carbon material preparation methods have the defects of complex synthesis process, long synthesis cycle, high cost, difficult to obtain raw materials, and poor environmental protection. People try to use different methods to manufacture porous carbon materials with various pore shapes, pore sizes and structures. How to realize the regulation of the structure of porous carbon materials and doping other elements to improve the characteristics of porous carbon materials has become a research trend of new porous carbon materials; Carrageenan, because carrageenan is a hydrophilic colloid extracted from red algae seaweeds such as Eucheuma, Geliflower, and Carrageenan, its chemical structure is a polysaccharide sulfate ester composed of galactose and anhydrogalactose Calcium, potassium, sodium, ammonium salts of calcium, potassium, sodium, ammonium salts, according to the difference of sulfate ester binding form, carrageenan is divided into K type (Kappa), I type (Iota), L type (Lambda), and carrageenan in the prior art is widely used Used in the manufacture of jelly, ice cream, pastry, soft candy, canned food, meat products, eight-treasure porridge, white fungus bird's nest, soup food and cold salad food, based on the strong stability of carrageenan, the dry powder is not easy to degrade after long-term storage, in neutral and alkaline solutions It is also very stable, even if it is heated, it will not be hydrolyzed. A low-cost, short-time-consuming, environmentally friendly and simple method for preparing Fe (iron) and S (sulfur) hybrid porous carbon materials based on carrageenan is developed. Has good economic and social benefits

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 kind of preparation method of porous carbon material
  • A kind of preparation method of porous carbon material
  • A kind of preparation method of porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The process of the preparation method of the porous carbon material involved in this example includes six steps: preparation of carrageenan aqueous solution, preparation of metal salt solution, preparation of hydrogel, washing and freezing of hydrogel, freeze-drying of hydrogel and preparation of porous carbon material :

[0031] (1) Preparation of carrageenan aqueous solution: weigh 3g of IOTA carrageenan, set the stirrer speed to 800-1000r / min, set the heat source temperature to 60-80°C, and dissolve the carrageenan under magnetic stirring and heating conditions In 200ml of twice-distilled water, stop heating after the carrageenan is completely dissolved, remove the heat source, and obtain a carrageenan aqueous solution with a concentration of 1-3% by mass, and leave the carrageenan aqueous solution at room temperature for 10-20 minutes. It is naturally cooled to 50-60°C to complete the preparation of the carrageenan aqueous solution;

[0032] (2), prepare metal salt...

Embodiment 2

[0040] The process of the preparation method of the porous carbon material involved in this example includes six steps: preparation of carrageenan aqueous solution, preparation of metal salt solution, preparation of hydrogel, washing and freezing of hydrogel, freeze-drying of hydrogel and preparation of porous carbon material :

[0041] (1) Preparation of carrageenan aqueous solution: weigh 2g of IOTA carrageenan, set the stirrer speed to 800-1000r / min, set the heat source temperature to 60-80°C, and dissolve the carrageenan under magnetic stirring and heating conditions In 200ml of twice-distilled water, stop heating after the carrageenan is completely dissolved, remove the heat source, and obtain a carrageenan aqueous solution with a concentration of 1-3% by mass, and leave the carrageenan aqueous solution at room temperature for 10-20 minutes. It is naturally cooled to 50-60°C to complete the preparation of the carrageenan aqueous solution;

[0042] (2), prepare metal salt...

Embodiment 3

[0048] The process of the preparation method of the porous carbon material involved in this example includes six steps: preparation of carrageenan aqueous solution, preparation of metal salt solution, preparation of hydrogel, washing and freezing of hydrogel, freeze-drying of hydrogel and preparation of porous carbon material :

[0049] (1) Preparation of carrageenan aqueous solution: Weigh the IOTA-type carrageenan with a set quality, set the stirrer speed to 800-1000r / min, and the heat source temperature to 60-80°C, under magnetic stirring and heating conditions Dissolve carrageenan in 200ml of twice-distilled water. After the carrageenan is completely dissolved, stop heating and remove the heat source to obtain an aqueous solution of carrageenan with a concentration of 1-3% by mass. Put the aqueous solution of carrageenan at room temperature. Allow it to cool naturally to 50-60°C for 10-20 minutes to complete the preparation of the carrageenan aqueous solution;

[0050] (2...

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 preparation of porous materials and in particular relates to a preparation method of a porous carbon material. A technological process comprises the following six steps: preparing a carrageenan water solution, preparing a metal salt solution, preparing hydrogel, washing and freezing the hydrogel, freeze-drying the hydrogel and preparing the porous carbon material. The porous carbon material is prepared based on carrageenan and the carrageenan is heated and dissolved into secondary distilled water to form a carrageenan solution; then the carrageenan solution and the metal salt solution are mixed to be subjected to gelation reaction, so as to generate the hydrogel; then the hydrogel is washed, frozen, freeze-dried and pyrolyzed to prepare the Fe and S hybridized porous carbon material; in the preparation process, the reaction is moderate and easy to control and the yield and the purity of the product are high; a novel method is provided for synthesis of the porous carbon material and an application field of the porous carbon material is expanded; the technological process has the advantages of simplicity, scientific and reasonable principle, strong operability, environment protection and energy saving, friendly utilization environment and wide application prospect.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of porous material preparation, and in particular relates to a method for preparing porous carbon material. The Fe (iron) and S (sulfur) hybrid porous carbon material is prepared based on carrageenan, which has the advantages of low cost, short time consumption, environmental protection and energy saving and The advantage of simplicity and ease of use. [0003] Background technique: [0004] Porous material is a material with a network structure composed of interconnected or closed pores. The boundary or surface of the pores is composed of pillars or plates. There are two typical pore structure forms: one is formed by a large number of polygonal pores aggregated on a plane The two-dimensional structure of a honeycomb is called a honeycomb material because its shape is similar to the hexagonal structure of a honeycomb; more generally, another three-dimensional structure formed by a large number of poly...

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): C01B32/05
CPCC01P2004/03C01P2004/80
Inventor 王应霞杨柱超薛志欣夏延致
Owner QINGDAO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap