Scientists Move Closer to Carbon-Neutral Aviation with Solar-Powered Jet Fuel Technology

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Researchers at Caltech have developed a groundbreaking solar-powered system designed to produce jet fuel, marking a significant step towards carbon-neutral aviation. This innovative technology utilizes a small-scale photothermocatalytic reactor that operates entirely on solar energy, eliminating the need for fossil fuels or external electricity, according to Aisulu Aitbekova, the study's co-author.

The reactor captures solar heat to drive essential chemical reactions, functioning at temperatures up to 249°C under direct sunlight. This allows for the conversion of ethylene into longer-chain hydrocarbons, which are necessary components of jet fuel. Harry Atwater, director of the LiSA and Howard Hughes Professor of Applied Physics at Caltech, stated, "This device demonstrates that the heat generated by abundant solar energy can drive catalytic processes."

The current process begins with ethylene derived from fossil fuels, but researchers are working on methods to produce ethylene from carbon dioxide, water, and sunlight, aiming for a fully renewable fuel production system. This advancement brings hope for sustainable aviation, an industry facing increasing pressure to decarbonize. The study is published in the journal Device.

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