400978 Direct Conversion of Mixed Oxygenates to Isobutene over ZnxZryOz Mixed Oxides

Monday, April 27, 2015: 3:30 PM
13A (Austin Convention Center)
Robert A. Dagle1, Karthikeyan K. Ramasamy2, Colin Smith1, Vanessa M. Dagle1, Michel Gray2, Michael A. Lilga2 and Yong Wang1,3, (1)Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, (2)Chem & Biological Proc Dev, Pacific Northwest National Laboratory, Richland, WA, (3)The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA

Direct conversion of ethanol to isobutene has recently been reported over ZnxZryOz mixed oxide catalysts with balanced acid-base sites [1]. A complex catalytic reaction pathway to hydrocarbons starting from ethanol occurs through a combination of reactions, including alcohol dehydration, aldol condensation, dehydrogenation, and Bronsted acid-site catalyzed acetone-to-isobutene. At Pacific Northwest National Laboratory we have been exploring the use of this catalyst system for the direction conversion of a variety of oxygenated species, including acetic acid, acetaldehyde, and ethyl acetate. This presentation will discuss reaction mechanism and application for the direct conversion of complex oxygenated feed mixtures to isobutene over ZnxZryOz mixed oxide catalysts.

[1] Sun et al. 2011. J Am Chem Soc. 133: 11096-11099


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See more of this Session: Developments in Bio-Petrochemicals II
See more of this Group/Topical: Fuels and Petrochemicals Division - See Also Topicals 4, 6, and 7