Table 1 Key metrics comparison of three reactors in EChem-SOR system
From: Electrochemical valorization of H2S in natural gas to sulfate under mild conditions
Cell configuration |
|
|
| |
|---|---|---|---|---|
H-cell | 4-cm2 flow reactor | 100-cm2 flow reactor | ||
Reaction conditions | Electrode area (cm2) | 1 | 4 | 100 |
Electrolyte volume (ml) | 50 | 50 | 500 | |
Operation manner | Batch production | Continuous production | Continuous production | |
Reaction interface | Electrode−Electrolyte | Electrode−Electrolyte−Gas | Electrode−Electrolyte−Gas | |
Anode material | Pt foil1 | IrRuOx/Ti | IrRuOx/Ti | |
Maximum applied current (mA) | 56 | 400 | 5000 | |
H2S ratio in natural gas (vol%) | 5 | 5 | 10 | |
Feed gas flux (ml min−1) | 20 | 20 | 300 | |
Performance | H2Scap conversion (%) | 45 | 98 | 93 |
K2SO4 productivity (g h−1) | 0.02 | 0.26 | 4.5 | |
K2SO4 selectivity (%) | 21 | 90 | 72 | |
e−-to-sulfate efficiency (%) | 20 | 61 | 84 | |
Operation time (h) | >2 | >40 | >100 | |
