Converting renewable lignocellulose to jet fuel is a promising way to increase the value of biomass and benefits the needs for sustainable development. Here, we converted lignocellulose-derived cyclic ketone to high-performance polycycloalkane mixture through solid acid catalyzed aldol condensation and hydrodeoxygenation reaction. The main problem in aldol condensation is that water generated in the reaction will decrease the activity and stability of solid acid catalysts. In order to increase the water tolerance of solid acid catalysts, we developed a highly stable, efficient, and water-tolerant SBA-16 confined phosphotungstic acid (HPW) catalyst. The surface of SBA-16 was modified by alkylimidazole that creates relative hydrophobic environment and anchor points for HPW, leading to the resistance of HPW leaching and keeping stable performance of the catalyst after five runs. The fuel blending obtained through cross condensation and hydrodeoxygenation reaction of cyclopentanone and cyclohexanone has both high density (0.905 g/mL) and low freezing point (lower than -50 °C). It takes the advantages of good low-temperature properties of primary-condensation fuel and the high density of secondary-condensation fuel. In conclusion, this work provides a way to produce high-performance bio-jet fuel blending from lignocellulose, and suggests an efficient and stable acid catalyst for aldol condensation.

Water-tolerant phosphotungstic acid catalyst for controllable synthesis of jet fuel with lignocellulose-derived ketones

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.