Hydrogen production, separation and use form one supply chain. These topic guides explain each stage and connect it to the next.
Hydrogen carries energy; producing it requires a feedstock and an energy input. Water electrolysis uses electricity. Reforming converts a fuel and steam into a hydrogen-containing gas. The emissions and efficiency belong to the complete route, including that energy supply.
Explore hydrogenA fuel cell produces electricity through electrochemical reactions while fuel and oxidant are supplied. In a hydrogen PEM cell, protons pass through a polymer electrolyte and electrons flow through an external circuit. Water forms at the cathode.
Explore fuel cellsA membrane reactor combines a chemical reaction with selective transport. Removing a product while it is formed can change the reacting mixture and allow an equilibrium-limited reaction to proceed farther than it would in a conventional reactor under comparable conditions.
Explore membrane reactorsHydrogen can be produced by converting a hydrogen-containing feedstock or splitting water. A production route needs both a material balance and an energy balance. Calling the product clean without specifying the feed and energy supply leaves the main question unanswered.
Explore hydrogen productionHydrogen purification removes unwanted constituents from a hydrogen-containing stream. Pressure swing adsorption retains impurities on adsorbents. Membranes separate through material-specific transport. The preferred arrangement depends on feed composition and the product required.
Explore hydrogen purification