Biobutanol - 1-Butanol Energy content closer to gasoline(93...

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1-Butanol Energy content closer to gasoline (93 octane too!) Much less hydroscopic than ethanol Higher boiling point (116 oC) Higher flash point (~35 oC) Soluble in “normal petroleum fuels” Freezing point minus 90 oC! Kills most “bugs” at high concentrations Bulk transport in existing network (e.g. pipelines )
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Biobutanol from fermentation of a starch/ glucose source Two stage system: Extract & hydrolyze, fermentation Patents OSU 5,563,069 & Environmental engineering 5,753,474 Published performance: 2.5 gal/bushel or 0.37 L/kg (~40% conversion to butanol by weight) Starch/glucose feedstock Immobilized cell reactor butyric acid biobutanol
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Dibutyl ether can be made from butanol in high yield. Some Key data for “diesel” fuel components Compound b.p. ait Fp m.p. Cetane index ( o C) ( o F) ( o C) ( o C) Butanol (C4H9OH) 116 649 35 -90 25 dibutyl ether (C 4 H 9 OC 4 H 9 ) 142 365 25 -98 >75 cetane (C 16 H 34 ) 287 395 135 18 100 1-Me-naphthalene 240 984 82 -22 0
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1-butene to mixed hydrocarbons CH 3 =CHCH 2
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