https://www.wired.com/story/could-carbon-dioxide-be-turned-into-jet-fuel/
The technique effectively reverses the process of burning fuel by relying on the organic combustion method. The team heated a mix of citric acid, hydrogen and an iron-manganese-potassium catalyst to turn CO2 into a liquid fuel capable of powering jet aircraft. The approach is inexpensive, uncomplicated and uses commonplace materials. It's cheaper than processes used to turn hydrogen and water into fuel. There are numerous challenges to bringing this to aircraft. The lab method only produced a few grams of fuel -- you'd clearly need much more to support even a single flight, let alone an entire fleet. You'd need much more widespread use of carbon capture. And if you want effectively zero emissions, the capture and conversion systems would have to run on clean energy.
The technique effectively reverses the process of burning fuel by relying on the organic combustion method. The team heated a mix of citric acid, hydrogen and an iron-manganese-potassium catalyst to turn CO2 into a liquid fuel capable of powering jet aircraft. The approach is inexpensive, uncomplicated and uses commonplace materials. It's cheaper than processes used to turn hydrogen and water into fuel. There are numerous challenges to bringing this to aircraft. The lab method only produced a few grams of fuel -- you'd clearly need much more to support even a single flight, let alone an entire fleet. You'd need much more widespread use of carbon capture. And if you want effectively zero emissions, the capture and conversion systems would have to run on clean energy.
