Abstract
Furfural was oxidized to furoic acid by molecular oxygen under catalysis by 150 nm-sized Ag(2)O/CuO (92%) or simply CuO (86.6%). When 30 nm-size catalyst was used,the main product was a furfural Diels-Alder adduct. Detailed reaction conditions and regeneration of catalysts were investigated. Under optimal conditions, a series of aromatic and aliphatic aldehydes were oxidized to the corresponding acids in good yields.
MeSH terms
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Aldehydes / chemistry*
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Carboxylic Acids / chemistry*
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Catalysis
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Copper / chemistry*
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Furans / chemistry
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Hydrogen-Ion Concentration
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Mass Spectrometry
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Microscopy, Electron, Transmission
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Oxidation-Reduction
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Oxides / chemistry*
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Oxygen / chemistry*
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Particle Size
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Silver Compounds / chemistry*
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Temperature
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Time Factors
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X-Ray Diffraction
Substances
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Aldehydes
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Carboxylic Acids
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Furans
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Oxides
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Silver Compounds
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Copper
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disilver oxide
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Oxygen
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cupric oxide