1. Antony D. Han Chem 750/7530 Feb 28th, 06

2. Synthesis SWCNTs Traditional methods: Limited research use purpose
Electric-arc discharge
Laser ablation
Catalytic CVD
Limited research use purpose
A few milligrams per hour
MWCNTS - kg/day

3. Progress in SWCNTs Ultrafast laser pulses
~1.5 g/h
Improved CVD using optimized catalysts
~3 g/h
D.C. arc discharge
2.5 g/h

5. Scale-up The purpose of this study
Demonstrate the scale-up is possible
Carry out Numerical simulations
Build up medium scale-up reactor
Optimize process parameters to obtain higher product quality

6. Experimental setup

7. Conditions and Results
Synthesis conditions
Thermal conditions
Raman Spectra

8. SEM and TEM images
Before purification
SEM
TEM

9. SEM and TEM images
After purification

10. Yield percent analysis
35% yield of SWNTs
6~15 g/h

11. Summery Novel synthesis method Green energy resource
Benign to environment
Relatively simple equipment
Easy to scale up the production
High yield percentage
Fast yield