【摘要】 将四磺基钴酞菁(CoTSPc)通过共价结合连接在氨基化的介孔分子筛MCM-41孔道壁上,制成负载酞菁催化剂,对其进行了X射线衍射(XRD)和红外分析,并研究了其对巯基乙醇的催化氧化反应动力学.结果表明,负载酞菁催化剂有优良的催化性能,在液相反应过程中扩散阻力较小.这种负载催化剂有酶催化特点,即遵循米氏动力学规律,米氏常数Km为0.015 mol/L.反应完成后,通过沉淀即可从反应体系中分离,解决了酞菁催化剂无法回收利用和对环境造成新的污染的问题.在工业生产和环境保护方面有着良好应用前景.更多还原

【Abstract】 Cobalt tetrasulfonate phthalocyanine(CoTSPc) was covalently bonded to the silica surface of mesoporous MCM-41 molecular sieve.The resulting anchored complex was characterized by X-ray powder diffraction(XRD) and IR spectroscopy,and used as catalyst for the oxidation of mercapto ethanol.The catalyst exhibits high catalytic activity in reaction conditions like that of peroxidase,and the catalytic constant K_m of peroxidase-like characterization for CoTSPc/MCM-41 complex was obtained as 0.015 mol/L.The catalyst can be easily separated from the reaction system after reaction.The reutilization of phthalocyanine catalyst was solved and environmental pollution was avoided.The catalyst shows a good prospect in industrial application and environmental protection.更多还原