commercial preparation of hydrogen

Hydrogen gas is commercially prepared through various methods, some of which are: 1. Steam methane reforming: This is the most common method of hydrogen production. In this method, natural gas, which is mostly methane, is reacted with steam at high temperatures in the presence of a catalyst to produce hydrogen gas and carbon monoxide. The carbon monoxide can be further reacted to produce additional hydrogen. 2. Electrolysis: This method involves the use of electricity to split water into hydrogen and oxygen. It requires a significant amount of energy and is generally more expensive than other methods. 3. Coal gasification: This method involves reacting coal with steam and air or oxygen at high temperatures to produce a gas that contains hydrogen, carbon monoxide, and other gases. 4. Biomass gasification: This method is similar to coal gasification, but uses biomass as the feedstock instead of coal. 5. Partial oxidation: This method involves reacting a hydrocarbon fuel with oxygen at high temperatures to produce hydrogen gas and carbon dioxide.