245th ACS National Meeting, New Orleans, Louisiana, April 7-11, 2013

ACS 2012

Direct catalytic conversion of ethanol stream into hydrocarbon blend-stock (CATL196)

ACS Meeting Name

Spring 2013 New Orleans ACS National Meeting (April 7-11, 2013)


Chaitanya Narula


Division of Catalysis Science and Technology (CATL)

Syposium/Session Title

(THU-AM) Catalysts for Renewable Fuels and Chemicals

Session Date and Time

Thursday, April 11, 2013, 8:30 AM

Lecture ID



We report ethanol transformation into a blend-stock hydrocarbon fuel through a one-step catalytic process. Deuterium labeling studies rule out ethanol conversion to ethylene as the first step in ethanol to hydrocarbon blend-stock process. Instead, hydrocarbon pool mechanism seems to dominate. Our work shows that water concentration in dilute ethanol or simulated fermentation stream has no effect on the catalyst or product distribution. The catalyst was observed to become coked after several hours. The coking time was dependent on space velocity and the catalyst could be regenerated at 450 °C in air. The blend-stock consists of a mixture of C3 – C16 hydrocarbons containing paraffin, iso-parrafins, olefins, and aromatic compounds with a calculated motor octane number of 95. Fractional collection of the fuel product allows for the different fractions to be used as blend-stock for gasoline, diesel, or jet fuel. Successful engine experiments were performed on a variable valve actuation gasoline engine showing comparable performance and emission data to certification gasoline.

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