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

Application of a green activator in the preparation of porous carbon materials

An activator and porous carbon technology, which is applied in the application field of green activators in the preparation of porous carbon materials, can solve the problems of corroded instruments, high price, high risk factor, etc., and achieve excellent product performance, simple process, and huge economic benefits. Effect

Active Publication Date: 2018-11-09
INST OF SOIL SCI CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the known traditional activators are phosphoric acid (H 3 PO 4 ), potassium hydroxide (KOH), sodium hydroxide (NaOH), zinc chloride (ZnCl 2 ), potassium tert-butoxide (C 4 h 9 KO), magnesium nitrate (Mg(NO 3 ) 2 ) and other corrosive or dangerous chemical reagents are expensive, pollute the environment, corrode instruments, have a high risk factor, and do not conform to the sustainable development strategy, which limits further mass production and application

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
  • Application of a green activator in the preparation of porous carbon materials
  • Application of a green activator in the preparation of porous carbon materials
  • Application of a green activator in the preparation of porous carbon materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In this example, cotton stalks were selected as the carbon precursor. Weigh 16 g of straw powder into 50 mL of deionized water, put it into a hydrothermal reactor, and perform hydrothermal treatment at 250 °C for 4 h. After cooling, wash with deionized water, and filter with suction to obtain a brown solid residue (hydrothermal charcoal). According to the mass ratio of hydrothermal charcoal: potassium formate = 1:4, it was dissolved in ultrapure water, stirred with magnetic ions at 70°C for 4 hours, and dried at 120°C. Put it into a square corundum crucible, put it in a tubular muffle furnace, set the nitrogen flow rate at 400 mL / min, heat it to 850°C at 5°C / min, and keep it for 1h, then cool it down to room temperature at 5°C / min, take it out The crucible, the black solid residue was washed with 10vol.% hydrochloric acid at 70°C and deionized water successively, filtered with suction and dried in an oven at 120°C overnight. Finally, it was pulverized with an agate mo...

Embodiment 2

[0019] In this example, cotton stalks were selected as the carbon precursor. Weigh 16 g of straw powder into 50 mL of deionized water, put it into a hydrothermal reactor, and perform hydrothermal treatment at 250 °C for 4 h. After cooling, wash with deionized water, and filter with suction to obtain a brown solid residue (hydrothermal charcoal). According to the mass ratio of hydrothermal charcoal: potassium formate = 1:4, it was dissolved in ultrapure water, stirred with magnetic ions at 70°C for 4 hours, and dried at 120°C. Put it into a square corundum crucible, put it in a tubular muffle furnace, set the nitrogen flow rate at 50 mL / min, heat it at 5°C / min to 850°C, and keep it for 1h, then cool it down to room temperature at 5°C / min, take it out The crucible, the black solid residue was washed with 10vol.% hydrochloric acid at 70°C and deionized water successively, filtered with suction and dried in an oven at 120°C overnight. Finally, it was pulverized with an agate mor...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to application of a green activator to preparation of a porous carbon material. The method includes: taking agricultural waste as a carbon precursor, conducting hydrothermal treatment at 250DEG C for 4h, and performing filtering to obtain brown solid residue; dissolving the brown solid residue and potassium formate in a mass ratio of 1:4 in ultrapure water, performing heatingstirring for 4h at 70DEG C, and conducting drying at 120DEG C; taking out the sample, crushing the sample by a agate mortar, in a tubular muffle furnace and under nitrogen protection, conducting hightemperature carbonization at 600-850DEG C and performing activation for 1-4h, and conducting cooling to obtain black solid residue; using 0-80DEG C 10% V / V hydrochloric acid for cleaning, then usingdeionized water for cleaning, and conducting pumping filtration and drying so as to obtain the porous carbon material. Compared with the traditional activators, the activator provided by the inventionis cheap, nontoxic, non-corrosive and environment-friendly, and meets the needs of sustainable development strategy, the requirement for production equipment is simple, and the generated carbon material has certain degree of graphenization, high specific surface area, and wide pore size distribution. In addition, agricultural waste can be used as carbon precursor to achieve high value recycling.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to the application of a green activator in the preparation of porous carbon materials. Background technique [0002] Porous carbon is a kind of carbonaceous material with stable physical and chemical properties, high specific surface area and developed pore structure. In recent years, with the deepening of related research, porous carbon has been successfully applied in the fields of gas storage, electric energy storage and conversion, water and air purification, and catalytic carrier, and its demand is increasing day by day. At present, the preparation of porous carbon by chemical reagent activation is a simple and convenient method, which has been widely used. However, the known traditional activators are phosphoric acid (H 3 PO 4 ), potassium hydroxide (KOH), sodium hydroxide (NaOH), zinc chloride (ZnCl 2 ), potassium tert-butoxide (C 4 h 9 KO), magnesium nitrate (Mg(NO ...

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): C01B32/324C01B32/348
Inventor 程虎卞永荣宋洋纪荣婷王芳蒋新
Owner INST OF SOIL SCI 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