Jet fuel broke $200 a barrel in April — more than double what it cost a year ago — and airlines are cancelling flights because they literally cannot afford to fly. Into that crisis, a team from the Shanghai Advanced Research Institute has delivered a remarkably well-timed scientific advance: a way to turn carbon dioxide directly into the long-chain hydrocarbons that become jet fuel.

The study, published on April 15 in ACS Catalysis, describes an iron-based catalyst that converts CO2 and hydrogen into heavy olefins — the precursor molecules for aviation fuel — in a single step. Previous approaches required multi-stage processes like Fischer-Tropsch synthesis, which demand extreme temperatures and pressures, making the resulting fuel prohibitively expensive.

This catalyst runs at just 330 degrees Celsius and moderate pressure, producing 453.7 milligrams of heavy olefins per reaction cycle. The key innovation is a precisely engineered iron surface that breaks down CO2 and hydrogen, then immediately guides the fragments into the long-chain molecules jet engines actually need. Iron is cheap and abundant, which matters enormously for any technology that has to scale to industrial volumes.

The process essentially runs combustion in reverse: waste gas and water go in, energy-dense liquid fuel comes out. If the green hydrogen is produced using renewable electricity, the entire cycle can approach carbon neutrality.

What makes this geopolitically interesting is where the technology originates. The race to decarbonise aviation is one of the hardest problems in clean energy, and China has just laid claim to what may be the cheapest route. The EU has mandated 70% sustainable aviation fuel use by 2050; the technology to get there may now run through Shanghai.

The team says the next step is scaling from lab demonstration to industrial pilot — the valley of death where many promising catalysts die. But with jet fuel at historic highs and no end in sight to the Iran conflict, the economic incentive to cross that valley has rarely been stronger.

Sources