novel crystallite carbon based on mesophase -pitch
DESCRIPTION
Novel crystallite carbon based on Mesophase -pitch. December 8, 2011. Contents. BGBU The Structure for Novel Crystallite Carbon Some Questions. Building from Granular Basic Units (BGBU). The precursor of the novel crystallite carbon. Thermal polycondensation. Stacking. - PowerPoint PPT PresentationTRANSCRIPT
December 8, 2011
BGBU
The Structure for Novel Crystallite Carbon
Some Questions
Building from Granular Basic Units (BGBU)
The precursor of the novel crystallite carbon
BBU of mesophase pitchMesophase molecule
Pitch molecules
Thermal polycondensation Stacking
Novel Crystallite
Carbon
carbonization activation
Yellow dot —the light components
in the matrix
Three-dimensional
structure
Basic units
?
Growing trend
Stabilization of the mesophase pitch
Coal-tar pitch
Precursor
Delayed coking The product
contains many macropores
Coal-tar pitch
Precursor
Oxidation in the air
oxygen atom will be brought in
Experiments
Coal-tar pitch
Mesophase pitchFig.1 Reaction equipment.
1 、 3. Thermocouples 2. Pressure gauge 4 、 6. Valve 5. Heating furnace 7. Reaction vessesl 8. Stirring paddle
Temperatureand time
ControllingThermal
condensation
Fig.2 the flowchat of the experiments
Results
Sample
SP /℃
Solubility/wt%
H/CRecovery/wt%
MesophaseTI QI
CTP 27 9.06 0.17 0.05 -- --
CTP-360-6 136 24.22 0.68 -- 58.10 few
CTP-410-0.5 144 31.64 0.90 -- 58.85 few
CTP: coal-tar pitch CTP-360-6: heat treatment at 360℃ for 6 hours CTP-410-0.5: heat treatment at 410℃ for 30min SP: softening point TI: toluene insolubles QI: quinoline insolubles
questions
1.How to control the conditions of the preparation for the proper precursors?
2.Some others appropriate methods for the stabilization of the mesophase pitch?