Steam methane reforming (SMR)

The vast majority of hydrogen produced worldwide is generated by a process of breaking up hydrocarbon molecules into H2 and CO – this process is called reformation. Reformation is performed on an industrial scale, typically using natural gas (methane, CH4) as a feedstock.

The most common reformation process is “steam methane reforming (SMR), in which methane (or other hydrocarbon) reacts with steam to produce CO and H2.