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8182686 
Journal Article 
Synthesis of benzoic acid from benzyl alcohol catalyzed by copper (II) or iron(III) salts under free-solvent condition 
Xu, S; Yan, X; Yao, Y; He, X; Chen, Y 
2009 
1 
Shiyou Huagong
ISSN: 1000-8144 
38 
2 
193-196 
Chinese 
Catalytic activity of inorganic salts CuSO4, CuCl2 · 2H2O, Cu(NO3) · 3H2O and FeCl3 · 6H2O in oxidation of benzyl alcohol to benzoic acid with oxygen were studied with free-solvent. Effect of inorganic salt type, reaction time and catalyst dosage on yield of benzoic acid was investigated. Recycle of catalyst was observed and reaction mechanism was proposed. It is found that Cu(II) salts are more active with high yield of benzoic acid than Fe(III) salt. Under reaction conditions of benzyl alcohol 0.02 mol, mole ratio of CuSO4 to benzyl alcohol 0.082, NaOH 0.0250 mol and reaction time 90 min, yield of benzoic acid can mount to 98.4%. The reaction was environment friendly and no waste was produced during the process. 
Benzoic acid; Benzyl alcohol; Catalytic oxidation; Copper(II) inorganic salt; Free-solvent; Iron(III) inorganic salt