At present， the industrial route for the production of cyclohexanone cyclohexane oxidation， there are two First cyclohexane catalytic oxidation， and the other is non-catalytic oxidation of The traditional process of production of cyclohexyl alcohol and cyclohexanone (KA oil)， the process is complex and serious Therefore， to find a new energy to maximize cyclohexane conversion rate and the selectivity of the alcohol and ketone oxidation method has great Metal porphyrin catalysts to improve the role of traditional crafts shortcomings， showing high activity and selectivity is the main object of study of the catalytic oxidation of The conversion rate of cyclohexane， cyclohexyl alcohol selectivity of cyclohexanone as the indexes were tetraphenylporphyrin copper (TPPCu)， four (m-methylphenyl) porphyrin copper (Tm-MPPCu) (3，4 - dimethylphenyl) porphyrin copper (TDMPPCu) and other three metal porphyrin catalyzed oxidation of cyclohexane synthesis of cyclohexyl alcohol and cyclohexanone experiments， the purpose is to explore the tetraphenylporphyrin copper even methyl substituents at the benzene ring， the number of methyl substituted biomimetic catalytic oxidation of cyclohexane The experimental results show that: (1) within the scope of this experimental study， with methyl substituents on the benzene ring of the tetraphenylporphyrin copper， and its catalytic performance has improved， methyl substituted with a base number is more catalytic properties to improve more; (2) three metalloporphyrins have to study indicators of conditions， the optimum catalyst for is TDMPPC Suitable reaction conditions: the pressure 0MPa， air flow 10-12m3 / h， the catalyst concentration of 4 × 10-6g / g conditions， the optimum reaction temperature of 150 ° C， the reaction time was Under these conditions， the cyclohexane conversion rate of 23% of alcohol and ketone selectivity of 1%Keywords: cyclohexane; Metalloporphyrins; catalytic oxidation; methyl substituents the number of
Abstract Chitosan (Chitosan) and film-forming properties of polyvinyl pyrrolidone (PVP) dissolved outstanding performance， made of composite membrane， through the composite membrane-embedded and glyoxal cross-linking role of the glassy carbon electrode have a common fixed-horseradish dismutase enzymes and hemoglobin (Hb)， Fe (CN) 63-/4- body as an electronic Through cyclic voltammetry study of a variety of electrochemical properties of Experiments prove that the production of this biosensor is simple， selective and sensitive， H2O2 concentration in the linear range of 0 × 10-8 ~ 1 × 10-7 mol / L， the sensor detection limit is 0 × 10-8 mol / L， its The optimum pH of 5， the optimum temperature of 20 ℃ Key words horseradish peroxidase; modified glassy carbon electrode; chitosan; hemoglobin
