How can hydrogen be produced?
In the universe, hydrogen is found everywhere. On Earth too, but it is rarely pure. In general, it is associated with other elements such as oxygen or carbon. In order for it to be used by the industry, it must be separated from these elements.
First,(H), what is it for? Many industries include hydrogen in their processes. The latter thus enters for example in the methods of manufacturing . It is also used for , heat treatment of , , etc. In , it is simply one of the fuels, along with . The uses such batteries, for example.
As for its production, a very large majority of hydrogen produced today is fromor .
Hydrogen through reforming
Reformingwith superheated steam is a widely used process for . Under the action of water vapor and , the that constitute methane (CH 4 ) separate and rearrange into hydrogen (H 2 ) and (CO 2 ). somewhere else.
Gasification produces hydrogen
In theprocess , is burned in a reactor. At very high temperatures (between 1,200 and 1,500 ° C), the released gases reform to give H 2 and (CO).
Hydrogen by electrolysis
Whenof water (H 2 O), that is to say it is decomposed with the aid of an , one obtains dioxygen (O 2 ) and H 2 . This process is interesting because it makes it possible to easily obtain a pure hydrogen. But it is far from being economically profitable.
Other ways to produce hydrogen
Research teams are currently studying other production processes. Thus, there arewhich, when modified and submitted to the of the can produce hydrogen. This is also the case with photoelectrochemical cells, which electrolyze water thanks to the energy received by the sun.