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New fructose fuel

29.08.2007

A chemist from Wisconsin proposes to make plants not ethyl alcohol, but more efficient fuel.

On the one hand, more and more people are aware of the need to switch to renewable energy sources to curb global warming. In another, rising prices for non-renewable oil make new ways to extract alternative fuels profitable. As a result, interesting ideas emerge. For example, quite recently it was believed that only methane, ethanol, and, perhaps, biodiesel could be extracted from plants.

And Professor James Dumesic from the University of Wisconsin found another useful substance. It is dimethylfuran (DMF), which is derived from fructose. "The energy stored in a DMF molecule is 40% more than that of an ethanol molecule," says Prof. Dumešić. atmosphere".

Usually, to obtain DMF, fructose is first converted to hydroxymethylfurfural (HMF), which then becomes a desirable product on a copper chromate catalyst, but in very low yield. Scientists from Wisconsin accelerated the synthesis of HMF from fructose using table salt, replaced the salt-poisoned chromate catalyst with a copper-ruthenium one, and obtained a good technology for the synthesis of DMF.

"Of course, many problems need to be solved before it acquires any practical significance. However, we have shown how biomass can be used to produce fuel with an energy density comparable to that of gasoline," said Prof. Dumešić.

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