15 iron (Ⅲ) porphyrin compounds, TRPPFe^ⅢCl with different substituent R on porphyrin ring and TPPFe^ⅢX with different axial ligand X, are synthesized. The cyclohexane hydroxylation under room temperature and atomsphere pressure catalyzed by these porphyrins are studied. The substituent R on prophyrin ring and axial ligand X are found to affect the yields, rates and selectivities of the hydroxylations. The effect of some reaction conditions such as solvent, temperature as well as addition of organic bases on the catalytic properties of iron(Ⅲ)-porphyrins is also discussed.

Key words: BIOSIMULATION, HYDROXYLATING, ENVIENMENTAL EFFECT, SUBSTITUENT EFFECT, FERRIPORPHYRIN, CATALYTIC BEHAVIOUR