black hydrogen

[ blak hahy-druh-juhn ]

noun

1. hydrogen that is produced by breaking down coal, especially bituminous coal, with steam and oxygen, releasing high amounts of carbon into the atmosphere. Compare brown hydrogen ( def ).

Word History and Origins

Origin of black hydrogen¹

First recorded in 2000–05

Example Sentences

The production of black hydrogen comes from partially burning coal.

From BBC

The production of black hydrogen comes from partially burning coal.

From BBC

Black hydrogen is produced by partially burning coal.

From BBC