Methanation refers to the production of methane by the equilibrium reaction of carbon monoxide and hydrogen:
This highly exothermic reaction is the reverse process of steam methane reforming.
Johnson Matthey's DAVY™ methanation technology forms the core of our substitute natural gas (SNG) process, which converts gasified coal into high methane-content fuel gas.
Our methanation technology, utilising our CRG catalysts , performs the key chemical transformation of syngas into SNG, and ensures the final product is of a suitable quality for injection into gas distribution networks.
The CRG catalyst facilitates the methanation reaction and also a simultaneous CO shift reaction.
The CO shift reaction consumes excess CO2 and increases the CO content of the gas, which is necessary for methanation: