Sabatier Reactor, converting carbon dioxide and hydrogen into methane and water using a nickel-based catalyst at high temperatures (300-400°C) and pressures.

This exothermic process is crucial in applications such as producing synthetic fuels, space missions (to recycle CO2), and hydrogen storage.

Methane generated can be used as a fuel or feedstock, making the Sabatier reactor integral to carbon recycling and energy storage systems.