Furfural has a ±20% higher BTU content than Ethanol! It is a rocket fuel. (dalinyebo.com/biofuels).

A key challenge in the biofuels landscape is to get more advanced biofuels—fuels other than corn ethanol and vegetable oil-based biodiesel—into the transportation pool.Utilization of advanced biofuels is stipulated by the Energy Independence and Security Act; however, current production levels lag behind proposed targets. Additionally, certain transportation sectors, such as aviation, are likely to continue to require liquid hydrocarbon fuels in the long term even as light duty transportation shifts to alternative power sources. A multi-university team lead by George Huber, Professor of Chemical and Biological Engineering at the University of Wisconsin-Madison, has addressed both challenges through the concerted development of technology designed to transform lignocellulosic biomass into a jet fuel surrogate via catalytic chemistry.

Also see "Furfural to Jetfuel"

See full article at http://www.azocleantech.com