The Study On Preparation Of {[co（2,2′-dpa）（2,2′-bipy）]·2H₂O}_n And Al-Cu-Co-M Quasicrystal Alloy And Their Catalytic Performances In The Oxidation Of Cycl Ohexene

Oxidation of olefins is widely applied. Cyclohexene is an important olefin and easily oxidized to form a variety of products. These products are mostly synthetic organic intermediates which having the application value in fine chemicals fields of pharmaceuticals, pesticides, perfumes, surfactants etc. At present, hydrogen peroxide and t-butyl hydrogen peroxide are used as the oxidants in the process of oxidation of cyclohexene, the process has defects such as corrosion of the equipments and high cost. In terms of environmental protection and cheap price, molecular oxygen is an ideal source of oxygen. Therefore, the design and synthesis of green and efficient catalyst which can catalyze the oxidation of cyclohexene under mild conditions have become the focus of the study.Metal-organic frameworks(MOFs) have high porosity and good chemical stability. A new type of metal-organic framework compound {[Co(2,2′-dpa)(2,2′-bipy)]·2H2O}n was synthesized by hydrothermal method with 2,2′-bipyridine heterocyclic ring and 2,2′-diphenyl carboxylic acid ligands as two raw materials. The composition and structure of the novel compound were characterized. It catalyzed oxidation reaction of cyclohexene with molecular oxygen under solvent-free conditions. The influence of reaction conditions such as reaction time, reaction temperature and catalyst dosage was investigated. The result reveals that the novel MOF catalyst has a higher turn over frequency with high efficiency.Quasicrystal has potential applications in catalysis field because of its surface special grain structure and electronic structure, and it can become a catalyst which has unique performance. A series of Al-Cu-Co-M alloy catalysts were designed and synthesized, and their composition and structure were characterized. These alloy catalysts catalyzed oxidation reaction of cyclohexene with molecular oxygen under solvent-free conditions. The influence of reaction conditions such as reaction time, reaction temperature and catalyst dosage was investigated. The quasicrystal alloys have higher catalytic activity in the catalytic oxidation reaction of cyclohexene and alloy composition is the primary factor affecting on the catalytic activity.