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Base-free direct oxidation of 1-octanol to octanoic acid and its octyl ester over supported gold catalysts.

Base-free direct oxidation of 1-octanol to octanoic acid and its octyl ester over supported gold catalysts.

ChemSusChem (2012-10-16)

Tamao Ishida, Yuichiro Ogihara, Hironori Ohashi, Tomoki Akita, Tetsuo Honma, Hiroshi Oji, Masatake Haruta

摘要

The choice of a suitable support for gold nanoparticles (Au NPs) enabled the direct oxidation of unreactive aliphatic alcohol, 1-octanol, to octanoic acid and octyl octanoate in the absence of a base. Under optimized conditions, Au NPs supported on NiO (Au/NiO) exhibited remarkably high catalytic activities and excellent selectivities to octanoic acid (e.g., 97 %) at full conversion. In contrast to Au/NiO, Au/CeO₂ selectively produced octyl octanoate as a major product in a base-free aqueous solution with a maximum selectivity of 82 % under optimized conditions.

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