Non-Oxidative Dehydrogenation Pathways for the Conversion of C2 -C4 Alcohols to Carbonyl Compounds.
Gold nanoparticles (NPs) supported on hydrotalcite (Au/HT) are highly active and selective catalysts for the continuous, gas-phase, non-oxidative dehydrogenation of bioderived C2 -C4 alcohols. A sharp increase in turn over frequency (TOF) is noted when the size of Au NPs is less than 5 nm relating to the strong synergy between metallic Au NPs and the acid-base groups on the support surface. It is shown that catalytic activity depends critically on Au NP size, support composition, and support pretreatments. A reaction pathway elucidated from kinetic isotope effects suggests that the abstraction of β-H by Au NPs (C-H activation) is the rate-determining step in the dehydrogenation of bioderived C2 -C4 alcohols.
Energy Bioscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA.|Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.
Sankaranarayanapillai
S
Shylesh
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.
Daeyoup
D
Kim
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.
Christopher R
CR
Ho
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.
Gregory R
GR
Johnson
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.
Jason
J
Wu
Energy Bioscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA. bell@cchem.berkeley.edu.|Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA. bell@cchem.berkeley.edu.
Alexis T
AT
Bell
D000438:Alcohols / Q000737:chemistry*; D000447:Aldehydes / Q000737:chemistry*; D002384:Catalysis; D006046:Gold / Q000737:chemistry; D006865:Hydrogenation; D007659:Ketones / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction
D000438:Alcohols; D000447:Aldehydes; D007659:Ketones; D006046:Gold
butanal; dehydrogenation; ethanol; guerbet reactions; n-butanol