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8 things you should know about hydrogen energy

8 things you should know about hydrogen energy

Energy
1. Not all hydrogen is created equal: what colour is your hydrogen? There are four colours characterizing ‘human-made’ hydrogen, based on the manufacturing process. Brown hydrogen has been created from coal by using water and heat, coal can undergo gasification for hundreds of years. In this process, the chemicals react to produce town gas, now more commonly known as syngas, this contains a mixture of gases which are chemically distilled to make hydrogen. Grey or Black hydrogen has been sourced from fossil fuels, with most of it produced using steam-methane reformation (SMR) of natural gas. This is the least expensive produced hydrogen, with emissions almost always released without carbon capture in place. Blue hydrogen is also produced from fossil fuels, yet with carbon capture ...