SEARCH Articles Figures Tables 0-xylene oxidation Acids to Acid Anhydrides Catalytic o-xylene oxidation O oxidant O oxidation O oxidative O-Phthalic acid Of o-xylene Of phthalic acid Oxidation to acids Oxides Os Phthalic Phthalic acid Phthalic acid anhydride Phthalic anhydride Phthalic anhydride, oxidation To anhydrides Xylene catalytic oxidation Xylene, oxidation to phthalic anhydride Xylenes o-xylene