1. An Optically Accessible Micro-Reactor
Josh Baraban, Ellison/Daily Group, CU-Boulder

2. Pyrolysis Micro-Reactor
Upstream:
Mass flow rate
Pressure
1 mm ID SiC, K by resistive heating, T_wall measured by thermocouple. Heat shield.
0.6–1 mm x 2 cm SiC 300–1700 K
Resistively heated and heat shielded
Twall measured by thermocouple
Downstream:
p ≈ 0
PIMS
Matrix IR

3. CFD Simulations 1200-1500 K, 280 sccm, 0.66 mm x 2.5 cm (Helium)
Qi Guan, Kimberly N. Urness, Thomas K. Ormond, Donald E. David, G. Barney Ellison & John W. Daily (2014) The properties of a micro-reactor for the study of the unimolecular decomposition of large molecules, International Reviews in Physical Chemistry, 33:4,

4. Spectroscopy & Chemical Kinetics
HCCCH2 + C2H2
Spectroscopy & Chemical kinetics - linked
Need to look inside
Measure rates, Optimize reactor
Anisole/C5H5 example - leverage small molecules to study big molecules

5. In situ Characterization
Give quick example of Raman as way to measure temp. – just ratio equation, or maybe simulation/plot too?

6. Transparent Furnace
T. B. Reed. Transparent furnace for vapor crystal growth. In Solid State Research Report, Vol. 1, pg. 21. Lincoln Lab, MIT, 1969.

7. Elliptical Reflector Detector
Hand out YAG reflector after first ellipse. Mention TracePro. ~7.5% accessible.

8. “Clover” Heater

9. Heater Test Data

10. Experimental Overview
278 sccm
5% NO in Ar
Vacuum Chamber
Mass Flow Controller
Baratron
Gas Supply and Pumping
Backing Pump
Drag Pump
LIF
Monochromator
ICCD
Heater Thermocouple
PID Controller
Detection System
Transformer
Heating and Temperature Control
225 nm
Harmonic generation and separation
450 nm
Nd:YAG
Dye Laser
355 nm
HV Pulser
Wavemeter
Scan Control
ICCD Controller
Delay Generator
Timing
Laser System

11. Imaging Fluorescence

12. Signal vs. Twall

13. Comparison with CFD

14. Pyrolysis of Methyl Nitrite

15. Review of Scientific Instruments, 87(1):014101, 2016.
Acknowledgements
Grant Buckingham Jessie Porterfield Kim Urness Tom Ormond G. Barney Ellison Qi Guan John Daily Chris Dreyer
NREL David Robichaud Mark Nimlos CIRES Shop Don David Many others
J. H. Baraban, D. E. David, G. Barney Ellison, and J. W. Daily. An Optically Accessible Pyrolysis Microreactor.
Review of Scientific Instruments, 87(1):014101, 2016.

16. “Clover” Heater

17. CFD Simulation

18. Raman in Quartz

19. LWIR Cameras

20. Thermography
Warming up, shows inner core of tube nicely

21. Thermography
Cooling – shows all features (screws, wires, etc)