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Alcohol-to-jet (biodiesel)


Technology Description

This process integrates several individually well-known steps to convert an alcohol (methanol, ethanol, butanol) into a drop-in renewable diesel or jet fuel. The feedstock alcohol undergoes dehydration to remove water, oligomerisation to create longer chain hydrocarbons out of shorter chains, hydrogenation through the addition to hydrogen to convert the hydrocarbons into desired fuels, and finally distillation to separate the products into diesel, jet fuel and other streams. Alcohol-to-jet (ATJ) is a American Society for Testing and Materials (ASTM)-certified sustainable aviation fuel (SAF), allowed to be blended up to 50%.

Relevance for Net Zero

The demand for sustainable aviation fuels (SAF) in a net-zero world is large, and other alternatives to SAFs are expensive or technically infeasible (e.g. electrifying long-haul flights)

Key Countries

United States, Japan, Sweden

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