Hydrogen production methods vary widely depending on the required capacity and purity of hydrogen:
- Coal gasification: The oldest method of hydrogen production is the reaction of coal (coke) with steam, which produces so-called water gas. (coke + air> carbon dioxide + heat, which warms the coke to 900 ° C; the coke so heated is then vaporized, which reacts with it and produces a mixture of hydrogen and carbon monoxide),
- Steam reforming of natural gas (methane) and other hydrocarbons,
- Partial oxidation of methane and other hydrocarbons resulting in a mixture of hydrogen and carbon monoxide (natural gas + oxygen> hydrogen + carbon monoxide),
- Electrolysis of water.