Method for preparing nanometer carbon fiber/foam coal through taking coal liquefaction residues as raw materials
A technology for direct liquefaction of carbon nanofibers and coal, which is applied in the field of carbon material science, a branch of inorganic non-metallic materials science and technology, can solve problems such as inability to effectively load metal catalysts, inability to cover nanocarbon fibers, and cumbersome and complicated preparation processes, and achieve easy operation , equipment requirements are not high, the effect of wide application prospects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0026] Weigh 10g of coal liquefaction residue ground to 120 mesh and 8g of n-pentane into a porcelain crucible, then place it in an autoclave, repeatedly inject high-purity nitrogen 2 to 3 times to remove the air, and then fill the autoclave with nitrogen to 3MPa. Raise the temperature to 210°C and keep the temperature for 4 hours. The autoclave was burst released and water cooled. Open the autoclave and take out the foamed carbon preform. The carbon foam preform was placed in a tube furnace, and in an air atmosphere, the temperature was raised to 350 °C at a rate of 1 °C / min, and then cooled to room temperature after a constant temperature of 1 h to obtain an oxidized carbon foam preform. The oxidized foamed carbon preform prepared above was heated up to 700°C at 2°C / min under high-purity nitrogen for carbonization, and then cooled down to room temperature naturally after constant temperature for 1 hour to obtain a metal / foamed carbon composite material.
[0027] Put the m...
Embodiment 2
[0029] Weigh 3 g of coal liquefaction residue ground to 80 mesh and 2 g of n-pentane into a porcelain crucible, then place it in an autoclave, and repeatedly inject high-purity nitrogen 2 to 3 times to exhaust the air, and then fill the autoclave with nitrogen to 3MPa. Raise the temperature to 220°C and keep the temperature for 4 hours. The pressure of the autoclave was suddenly released, and at the same time, it was placed in cold water to cool down to room temperature. Open the autoclave and take out the foamed carbon preform. The carbon foam preform was placed in a tube furnace, and in an air atmosphere, the temperature was raised to 300 °C at a rate of 2 °C / min, and then cooled to room temperature after a constant temperature of 1 h to obtain an oxidized carbon foam preform. The oxidized foamed carbon preform prepared above was heated up to 700°C at 2°C / min under high-purity nitrogen for carbonization, and then cooled down to room temperature naturally after constant tem...
Embodiment 3
[0032] Weigh 3g of coal liquefaction residue ground to 60 mesh and 2g of n-pentane into a porcelain crucible, then place it in an autoclave, and repeatedly inject high-purity nitrogen 2 to 3 times to exhaust the air, and then fill the autoclave with nitrogen to 3MPa. Raise the temperature to 230°C and keep the temperature for 4 hours. The pressure of the autoclave was suddenly released, and at the same time, it was placed in cold water to cool down to room temperature. Open the autoclave and take out the foamed carbon preform. The carbon foam preform was placed in a tube furnace, and in an air atmosphere, the temperature was raised to 340 °C at a rate of 1 °C / min, and then cooled to room temperature after a constant temperature of 1 hour to obtain an oxidized carbon foam preform. The oxidized foamed carbon preform prepared above was heated up to 700°C at 2°C / min under high-purity nitrogen for carbonization, and then cooled down to room temperature naturally after constant te...
PUM
Property | Measurement | Unit |
---|---|---|
pore size | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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