WasserGasShiftReaktionen
Wasser-Gas Shift, commonly known as the water-gas shift reaction (WGS), is a chemical process in which carbon monoxide reacts with water vapor to form carbon dioxide and hydrogen. The overall reaction is CO + H2O ⇌ CO2 + H2, and it is exothermic with a standard enthalpy change of about -41 kJ/mol. The reaction is a key step in adjusting the hydrogen-to-carbon monoxide ratio in synthesis gas (syngas) produced by steam reforming or coal gasification, enabling higher hydrogen yields for downstream processes such as ammonia synthesis, methanol production, or fuel-cell feedstock.
Industrial practice uses two main catalyst classes, often in separate stages. High-temperature shift (HTS) typically employs
Process design considerations include maintaining sufficient water vapor, controlling residence time, and integrating CO2 removal or