title: CuO and Ag2O/CuO catalyzed oxidation of aldehydes to the corresponding carboxylic acids by molecular oxygen.
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.
authors.affiliation: The Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
authors.forename: Qingyong
authors.initials: Q
authors.lastname: Tian
authors.forename: Daxin
authors.initials: D
authors.lastname: Shi
authors.forename: Yaowu
authors.initials: Y
authors.lastname: Sha
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D005663:Furans / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D013058:Mass Spectrometry; D046529:Microscopy, Electron, Transmission; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010316:Particle Size; D018030:Silver Compounds / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D000447:Aldehydes; D002264:Carboxylic Acids; D005663:Furans; D010087:Oxides; D018030:Silver Compounds; D003300:Copper; C040225:disilver oxide; D010100:Oxygen; C030973:cupric oxide