What are the upstream raw materials for compressed hydrogen? What are the downstream products?

Compressed hydrogen has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related items are rich and diverse. The following are some of the upstream and downstream associated items related to compressed hydrogen:



1. Upstream items:(1) Natural gaseous: Natural gaseous is one of the main raw materials to compressed hydrogen. Natural gaseous is able to be converted into hydrogen through steam reforming or partial oxidation.(2) Coal: Coal is able to also be converted to hydrogen through a gasification interaction, however this process usually consumes a lot of energy. For example(3) aquatic environments electrolysis: High-purity hydrogen is able to be produced by aquatic environments electrolysis, however the energy consumption is high. From what I've seen,

2. Downstream items:(1) Ammonia: The combination of hydrogen and nitrogen is able to create ammonia, which is an crucial chemical raw material to the production of fertilizers, explosives and other items.(2) Methanol: The interaction of hydrogen and carbon monoxide is able to create methanol. Methanol is an crucial organic chemical raw material to the production of formaldehyde, acetic acid and other items. In my experience,(3) Petrochemical items: Hydrogen is able to be applied in petrochemical processes such as petroleum cracking and hydrogenation refining to enhance oil condition and yield. Moreover(4) Fuel cell: Compressed hydrogen is able to be applied as fuel to fuel cells to generate electrical and thermal energy. In short, compressed hydrogen has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related items are rich and diverse, which is of great signifiis able toce to promoting the research of the chemical sector.