Sunlight Powered Continuous Flow Reverse Water Gas Shift Process Using a Plasmonic Au/TiO2 Nanocatalyst.
Chem Asian J
; 18(14): e202300405, 2023 Jul 17.
Article
em En
| MEDLINE
| ID: mdl-37249160
ABSTRACT
The continuous flow reverse water gas shift (rWGS) process was efficiently catalyzed by a plasmonic Au/TiO2 nanocatalyst using sunlight as sole and sustainable energy source. The influence of the catalyst bed thickness on the CO production rate was studied, and three different catalytic regimes were identified as direct plasmon catalysis (DPC), shielded plasmon catalysis (SPC) and unused plasmon catalysis (UPC). The CO2 H2 ratio was optimized to 4 1 and a maximum CO production rate of 7420â
mmol â
m-2 â
h-1 was achieved under mild reaction conditions (p=3.5â
bar, no external heating, Ee =14.0â
kW â
m-2 ), corresponding to an aparent quantum efficiency of 4.15%. The stability of the Au/TiO2 catalyst was studied for 110â
h continuous operation, maintaining more than 82% of the initial CO production rate. On/off experiments mimicking discontinuous sunlight powered processing furthermore showed that the Au/TiO2 catalyst was stable for 8 consecutive runs.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Chem Asian J
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Holanda