Base-free direct oxidation of 1-octanol to octanoic acid and its octyl ester over supported gold catalysts.
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.
Department of Chemistry, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan. tishida@chem.kyushu-univ.jp
Tamao
T
Ishida
Yuichiro
Y
Ogihara
Hironori
H
Ohashi
Tomoki
T
Akita
Tetsuo
T
Honma
Hiroshi
H
Oji
Masatake
M
Haruta
D020003:1-Octanol / Q000737:chemistry*; D002210:Caprylates / Q000737:chemistry*; D002384:Catalysis; D002563:Cerium / Q000737:chemistry; D004952:Esters; D006046:Gold / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010084:Oxidation-Reduction
D002210:Caprylates; D004952:Esters; D002563:Cerium; C030583:ceric oxide; D006046:Gold; D009532:Nickel; C028007:nickel monoxide; D020003:1-Octanol; C031492:octanoic acid