hydrogen
Hydrogen is the lightest element, colourless, tasteless, odourless and flammable.

Fuelling a Microcab
It burns in oxygen or air with a near colourless flame, emitting only one-tenth the radiant heat of a hydrocarbon fire and burning 7% cooler than petrol. It produces water plus nitrogen when burnt in air and so, compared to hydrocarbon-based fuels, it has great potential to reduce atmospheric pollution.

When hydrogen escapes into the atmosphere, it is so light that it scatters immediately upwards. This means that a hydrogen spill won’t pool on the ground, pollute groundwater, or soak into clothing.

Hydrogen is believed to be the most abundant element in the known universe. It is the third most abundant element on the Earth (after oxygen and silicon), found in water and all organic matter.

The hydrogen used in the Air Products' fuelling station at Birmingham comes from Green Gases Ltd. It is produced by 'green' means; it is manufactured from renewable energy, resulting in a considerable reduction in greenhouse gas emissions when compared with conventionally produced hydrogen.

Air Products fuelling station at the University of Birmingham

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