Birmingham scientists turn factory waste heat into clean hydrogen

Engineers at the University of Birmingham have developed a catalyst that can split water into hydrogen at dramatically lower temperatures than existing technology, raising the prospect of turning the waste heat from heavy industry into a valuable clean fuel.

The breakthrough, published in the International Journal of Hydrogen Energy in June 2026, was led by Professor Yulong Ding of the university's School of Chemical Engineering, working with colleagues at the University of Science and Technology Beijing. A patent application has been filed and the team says commercialisation efforts are already under way in the UK and Europe.

Hydrogen is widely seen as a crucial ingredient in cutting carbon emissions from industries that are hard to electrify, but producing it cleanly remains expensive and energy-hungry. The Birmingham work tackles that problem head-on by lowering the temperature, and therefore the energy, required to make it.

How the catalyst works

At the heart of the advance is a class of materials known as perovskites, in this case made from barium, niobium, calcium and iron, which the researchers call BNCF perovskites. These compounds are able to absorb oxygen at much lower temperatures than previous materials, which allows water molecules to be split apart to release hydrogen.

According to the team, the process can run at between 150 and 500 degrees Celsius for hydrogen production, with regeneration of the material at 700 to 1,000 degrees. That compares with around 700 to 1,000 degrees for production and as high as 1,500 degrees for regeneration using conventional approaches.

One variant, dubbed BNCF100, performed best across ten production cycles in testing, with only minimal degradation of its structure, a promising sign for the durability that any industrial process would demand.

Tapping the heat industry already wastes

The lower operating temperature is significant because it falls within the range of heat that many industrial sites already produce and then discard. Steel plants, cement works and other heavy manufacturers generate enormous quantities of waste heat that is currently vented to the atmosphere.

“The lower overall temperature of the process could enable hydrogen to be produced nearby renewable energy generation plants, with industrial waste heat harnessed as the heat input for low-temperature hydrogen production.”

Locating hydrogen production next to renewable power stations or industrial sites could also cut the cost and complexity of transporting the gas, which is notoriously difficult and expensive to move over long distances.

• Hydrogen production at 150 to 500C, far below the 700 to 1,000C of current methods
• Material made from barium, niobium, calcium and iron (BNCF perovskites)
• Best-performing variant survived ten production cycles with little degradation
• Patent filed, with commercialisation under way in the UK and Europe
• Published in the International Journal of Hydrogen Energy, June 2026

A piece of the net zero puzzle

Britain has committed to reaching net zero emissions and views low-carbon hydrogen as essential for decarbonising sectors that batteries cannot easily reach, from steelmaking to long-haul transport. The challenge has always been making clean hydrogen at a price that industry can bear.

By slashing the energy needed for the splitting reaction, the Birmingham approach could in principle improve the economics, though the researchers caution that scaling a laboratory result up to industrial volumes is a substantial undertaking that will take years.

Background

Most hydrogen used today is so-called grey hydrogen, made from natural gas in a process that releases large amounts of carbon dioxide. Cleaner alternatives such as electrolysis powered by renewables, or thermochemical water splitting of the kind explored here, are central to government and industry plans but remain costlier. Each incremental efficiency gain matters for whether clean hydrogen can compete.

The collaboration also underscores how much British university research depends on international partnerships, in this case with a leading Chinese institution, even as the wider sector grapples with funding pressures at home.

What happens next

The next step is to demonstrate the catalyst at larger scale and over many more cycles to prove it can withstand the rigours of continuous industrial operation. With a patent in hand and commercial partners reportedly interested, the team hopes the technology can move out of the laboratory and towards real factories within the decade.