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采用浸渍法将两种金属酞菁—α-八丁氧基酞菁钴(CoPc)和α-八丁氧基酞菁铜(CuPc)负载到介孔分子筛SBA-15上,制备CoPc/SBA-15和CuPc/SBA-15两种催化剂,通过紫外-可见光谱、红外光谱、N2吸附对其结构进行表征,研究pH值、催化剂类型、催化剂用量、底物浓度以及反应温度对催化效果的影响。实验结果表明:在相同的催化条件下,两种催化剂对巯基乙醇(ME)均表现出良好的催化性能,且CuPc/SBA-15的催化氧化性能优于CoPc/SBA-15,符合酶催化氧化反应的特征,遵循米氏方程动力学规律,其米氏常数和最大反应速率分别为27.23 mmol/L和1.72×10-4L/min,该催化反应属于吸热反应,其活化能Ea为29.17 kJ/mol。
Two kinds of metal phthalocyanine-α-octabutoxyphthalocyanine cobalt (CoPc) and α-octabutoxyphthalocyanine copper (CuPc) were supported on the mesoporous molecular sieve SBA-15 by impregnation to prepare CoPc / SBA-15 and CuPc / SBA-15 catalysts were synthesized and characterized by UV-Vis, FT-IR and N2 adsorption. The effects of pH value, catalyst type, catalyst dosage, substrate concentration and reaction temperature on the catalytic performance were investigated. The experimental results show that both catalysts exhibit good catalytic performance for mercaptoethanol (ME) under the same catalytic conditions, and the catalytic oxidation performance of CuPc / SBA-15 is better than that of CoPc / SBA-15. According to the kinetics of Mie equation, the Michaelis constant and the maximum reaction rate are 27.23 mmol / L and 1.72 × 10-4 L / min, respectively. The catalytic reaction belongs to the endothermic reaction and the activation energy Ea is 29.17 kJ / mol.