This chapter describes some of the traditional methods used for the production of hydrogen and then features some of its uses, highlighting the important role that hydrogen can play as a means of mitigating the emission of greenhouse gases, especially CO2. The industrial process for the steam reforming of natural gas is discussed in detail and then a description is given of variants of that process, including the use of microreactors and membrane reactors. This is followed by a brief description of the autoreforming, dry reforming and pyrolysis of methane as alternative means of producing syngas mixtures before discussing the potential of hydrolysis of water as a green route to hydrogen. The chapter ends with a brief mention of the production of hydrogen from biomass and a more detailed discussion of several industrial processes using either hydrogen or syngas: methanol synthesis, the Fischer Tropsch synthesis of hydrocarbons and ammonia synthesis.

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