A method to determine the correct photocatalyst concentration for photooxidation reactions conducted in continuous flow reactors

Clemens R. Horn and
Sylvain Gremetz

Letter
Published 27 Apr 2020

PDF
Album
1. Graphical Abstract
2. Figure 1: Reaction setup (FC: flow controller, BPR: back pressure regulator).
  
  Jump to Figure 1
3. Scheme 1: Photocatalysts A–I screened for the oxidation of citronellol.
  
  Jump to Scheme 1
4. Figure 2: Conversion and transmission at fixed reaction conditions (0.5 N citronellol, 1 mL/min,1 mol % catal...
  
  Jump to Figure 2
5. Figure 3: Measured transmission spectrum of a 5 mmol/L (1 mol %) solution of TPP (H) in dichloromethane with ...
  
  Jump to Figure 3
6. Figure 4: Transmission spectra of rose bengal (D) and the emission spectrum of an LED with a maximum at 524 n...
  
  Jump to Figure 4
7. Figure 5: Transmission spectra of dimethylanthracene (Gb) and emission spectra of LEDs with maxima at 365, 37...
  
  Jump to Figure 5
8. Figure 6: Transmission spectra of TPP (H) and emission spectra of LEDs with maxima at 407 and 424 nm, respect...
  
  Jump to Figure 6
9. Scheme 2: Photooxidation of alpha-terpinene.
  
  Jump to Scheme 2
10. Figure 7: Conversion of alpha-terpinene using the wavelength-adapted TPP (H) concentrations.
  
  Jump to Figure 7
11. Figure 8: Conversion of alpha-terpinene at different TPP (H) concentrations.
  
  Jump to Figure 8
12. Figure 9: Conversion of alpha-terpinene (0.5 N) as a function of the wavelength using DMA (Gb) as the catalys...
  
  Jump to Figure 9
13. Figure 10: Conversion of citronellol at different concentrations of rose bengal (D).
  
  Jump to Figure 10
14. Figure 11: Conversion of citronellol as a function of the light power (0.5 mol/L of citronellol, 1.34 mmol/L r...
  
  Jump to Figure 11
15. Figure 12: Absolute conversion of various concentrations of alpha-terpinene at 407 nm using 0.32 mmol/L of TPP...
  
  Jump to Figure 12
Supp. Info