关键词: 硫醇, 催化剂, 水溶性, 金属络合物, 卟啉, 催化活性, 动力学研究, 氧化反应

In the presence of water-sol. metalloporphyrins, the autoxidn. of Bu mercaptan was studied. When different metallotetrapyridyl-porphyrins (CoTPyP, MnTPyPCl, FeTPyPCl, NiTPyP, CuTPyP, ZnTPyP) were used as catalysts, only CoTPyP exhibited distinct activity. With different cobalt porphyrins as catalysts, the activity decreased in the order of CoTPyP>Co(p-SO3Na)TPP>Co(p-OH)TPP>Co(p-NH2)TPP>CoTPP. The relationship between the reaction rate and the thiol concentration was measured. At high concns. a saturation effect was observed Michaelis-Menten kinetics appear to be obeyed. The effect of some kinetic factors (the concentration of catalyst, the concentration of alkali, and the concentration of pyridine additive) on the oxidation reaction was also investigated.

Key words: MERCAPTAN, CATALYST, WATER SOLUBILITY, METAL COMPLEX, PORPHYRIN, CATALYTIC ACTIVITY, KINETIC STUDY, OXIDATION REACTION