High-conductivity nanometer biological carbon black, preparation method thereof and application

A high-conductivity, bio-carbon technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effect of improving electrical conductivity

Active Publication Date: 2017-03-15
WUHAN INSTITUTE OF TECHNOLOGY
View PDF14 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the literature on the preparation of biochar using lignin as a raw material focuses on the study of the carbonization temperature and the influence of catalysts on the conductivity of lignin and biochar, and the lignin-based biochar prepared by this method is mostly micron-sized blocks carbon, rarely involved in the preparation of nanoscale highly conductive bio-carbon black from lignin

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Hydrothermal reaction: Disperse 100g of alkali lignin raw material in 500g of water, add hydrochloric acid to adjust the pH value to 3 and ultrasonically disperse, then add 0.005mol ferric chloride hexahydrate, and place the mixed solution in an autoclave, The air in the kettle was replaced with nitrogen, and the mixture was heated with water at 120° C. and stirred for 4 hours to obtain a lignin / transition metal ion complex.

[0032] (2) Impurity removal: The obtained lignin / transition metal ion complex was repeatedly washed 5 times with deionized water, and dispersed in 500 g of water. Then, the pH value of the solution was adjusted to 11 with sodium hydroxide, and insoluble impurities in the solution were removed by suction filtration.

[0033] (3) Modification: put the purified lignin / transition metal ion complex solution at a temperature of 92° C., add 21 g of formaldehyde dropwise, and react for 3 hours.

[0034] (4) High-temperature carbonization: spray the m...

Embodiment 2

[0037] (1) Hydrothermal reaction: Disperse 100g of alkali lignin raw material in 500g of water, add hydrochloric acid to adjust the pH value to 5 and ultrasonically disperse, then add 0.01mol nickel chloride hexahydrate, place the mixed solution in a high-pressure reactor, and use The air in the kettle was replaced with nitrogen, and the mixture was heated with water at 140° C. and stirred for 3 hours to obtain a lignin / transition metal ion complex.

[0038] (2) Impurity removal: The obtained lignin / transition metal ion complex was repeatedly washed with deionized water for 5 times, and dispersed in 1000 g of water. Then, the pH value of the solution was adjusted to 12 with sodium hydroxide, and insoluble impurities in the solution were removed by suction filtration.

[0039] (3) Modification: put the purified lignin / transition metal ion complex solution at a temperature of 92° C., add 17 g of formaldehyde dropwise, and react for 3 hours.

[0040] (4) High-temperature carboni...

Embodiment 3

[0043] (1) Hydrothermal reaction: Disperse 100g of kraft lignin raw material in 500g of water, add hydrochloric acid to adjust the pH value to 3 and ultrasonically disperse, then add 0.015mol cobalt chloride hexahydrate, and place the mixed solution in an autoclave, The air in the kettle was replaced with nitrogen, and the mixture was heated with water at 170° C. and stirred for 6 hours to obtain a lignin / transition metal ion complex.

[0044] (2) Impurity removal: The obtained lignin / transition metal ion complex was repeatedly washed with deionized water for 5 times, and dispersed in 1000 g of water. Then, the pH value of the solution was adjusted to 12 with sodium hydroxide, and insoluble impurities in the solution were removed by centrifugation.

[0045] (3) Modification: put the purified lignin / transition metal ion complex solution at a temperature of 92° C., add 21 g of formaldehyde dropwise, and react for 3 hours.

[0046] (4) High-temperature carbonization: spray the m...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
electrical resistivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a high-conductivity nanometer biological carbon black, a preparation method thereof and an application. The high-conductivity nanometer biological carbon black is prepared from lignin and transitional metal compounds, the size of the high-conductivity nanometer biological carbon black is 10-100 nanometers, the specific surface area of the high-conductivity nanometer biological carbon black is 100-1000m<2> / g, and resistivity is 0.1-4ohms*m. The preparation method includes the steps: (1) performing hydrothermal coordination to obtain lignin / transitional metal ion complex; (2) removing impurities to obtain purified lignin / transitional metal ion complex solution; (3) modifying the solution with methyl aldehyde to obtain modified lignin / transitional metal ion complex solution; (4) performing high-temperature carbonization to obtain the high-conductivity nanometer biological carbon black. The size of the prepared high-conductivity nanometer biological carbon black reaches a nano-scale, and the high-conductivity nanometer biological carbon black has high conductivity and can serve as a conductive material, an electromagnetic shielding material or an anti-static material.

Description

technical field [0001] The invention relates to a high-conductivity nano-biological carbon black and its preparation method and application, in particular to a high-conductivity nano-biological carbon black prepared from lignin, its preparation method and application, and belongs to the field of carbon materials. Background technique [0002] Biochar is a carbon-rich solid prepared by cracking biomass at a certain temperature (less than 1000°C) under anoxic or anaerobic conditions. Biochar is usually prepared from industrial and agricultural waste such as trees, bamboo, melon peels, and straws. The use of biochar dates back more than 2,500 years to the black soil of the Amazon. Until today, activated carbon such as wood charcoal and bamboo charcoal are still widely used in our daily life. In addition to the above-mentioned application of biomass activated carbon for the adsorption of toxic and harmful gases, recent studies have found that biochar can be used in soil carbon...

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 Applications(China)
IPC IPC(8): C09C1/48C09K3/16H01B1/04H05K9/00B82Y30/00
CPCB82Y30/00C09C1/48C09K3/16H01B1/04H05K9/0081
Inventor 蒋灿
Owner WUHAN INSTITUTE OF TECHNOLOGY
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