Abstract: The catalytic performances of metalloporphyrins and compounding catalytic systems in the aerobic oxidation of 4-nitroethylbenzene to 4-nitroacetophenone is comprehensively investigated with a solvent-free system at atmospheric pressure.It is found that all of the metalloporphyrins or compounding catalytic systems have catalytic performances,and the catalytic performances of different metalloporphyrins or compounding catalytic systems are obviously diverse.Meanwhile,the cooperation of metalloporphyrins and transition metallic salts in the above reactions is acquired because the catalytic effects of the compounding catalytic systems are better than the metalloporphyrins as single catalyst.Compared the oxidation of 4-nitroethylbenzene catalyzed by T(p-OCH₃)PPMnCl-cobalt stearate as the best compounding catalytic system with the reaction without catalysts(blank reaction),the initiation temperature decreases from 190 ℃ to 155 ℃,while the conversion of 4-nitroethylbenze increases from 11.3% to 61.5%,the selectivity for 4-nitroacetophenone increases from 52.5% to 88.9%,and the yield of 4-nitroacetophenone increases from 5.9% to 54.7%.