在O2 存在的条件下 ,采用Co(OAc) 2 /CCl3 COOH/含氮配体催化体系催化苯选择羰基化制得了苯甲醛 ,反应的副产物为氯苯、苯酚及苯甲酸 .考察了不同的含氮配体以及CO和O2 的压力对反应的影响 .在采用吡啶为含氮配体 ,CO和O2 的压力分别为 1 2和 0 4MPa时 ,苯甲醛的收率可达 37 3% ,选择性达 79% . In the presence of O2, benzaldehyde was obtained by selective carbonylation of benzene with Co (OAc) 2 / CCl3 COOH / nitrogen-containing ligand catalysis system in the presence of O2. The by-products of the reaction were chlorobenzene, phenol and benzoic acid. Nitrogen-containing ligands and the pressure of CO and O2 on the reaction.Under the pyridine-nitrogen-containing ligands, when the pressures of CO and O2 are 1 2 and 0 4 MPa respectively, the yield of benzaldehyde can reach 37 3% Up to 79%.