From CO2 to Sustainable Aviation Fuel: Navigating the Technology Landscape

Sustainable jet fuel plays a crucial role in reducing aviation’s carbon footprint, offering a promising approach toward net-zero emissions in the aviation sector. This work investigates pathways for producing jet fuels directly from CO2. Given the early stage of many direct CO2 utilization technologies, identifying promising pathways is essential. Our investigation focuses on the three most important routes for jet fuel production, each of which employs a distinct intermediate compound. These routes are the reverse water–gas shift and Fischer–Tropsch (RWGS-FT) route, the methanol route, and the CO2 electrolysis route, which employ syngas, methanol, and ethylene as key intermediates, respectively. By performing comprehensive process simulations and analyzing the resulting energy intensity and thermal and CO2 efficiency of each route, these findings provide quantitative early-stage evaluations and allow us to identify key technical development requirements.