Small rhenium nanocrystalline (80 to 100 atoms, 2 nm � 2 nm) is formed from NH4ReO4 or MTO (methyltrioxorhenium). Re nanoparticles (NP) convert different alcohols to ketones and aldehydes through dehydrogenative oxidation at 180 �C. The produced Re nanoparticles are stable toward air and small amount of water as well as being tolerant to mercury. The catalytic system selective towards secondary aliphatic alcohols, giving quantitative conversion and yield. Benzylic alcohols, despite being primary alcohols, are converted to aldehydes is high yields as long as electron-withdrawing group is present. An inverse KIE effect is observed when �-CH bonds are deuterated, which indicates adduct intermediate. XRD and high-resolution TEM confirmed the small and uniform size of the Re NPs.

Stable and reusable atomic rhenium nanocrystallite catalyst for oxidant-free alcohol dehydrogenation

246th National Meeting (2013)

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