【摘要】 为了探究环己酮氧气氧化制备ε-己内酯反应高效催化剂,采用共沉淀法制备一系列双金属氧化物催化剂FeCe（x:y-T）,用X射线衍射（XRD）、N2吸附-脱附、X射线光电子能谱（XPS）、扫描电镜（SEM）等手段进行了表征,并将催化剂用于催化环己酮氧化反应。考察了溶剂种类、催化剂用量、反应温度、反应时间等反应条件的影响。结果表明Fe₂O₃和CeO₂之间有一定协同作用,铁铈摩尔比和焙烧温度的改变对催化剂活性影响明显,其中FeCe（1:2-500）显示出最佳催化效果。对反应条件进行优化后,环己酮的转化率及ε-己内酯选择性均高于99%,且催化剂可被重复使用5次活性无明显下降。更多还原

【Abstract】 In order to explore high efficient catalysts for the oxidation of cyclohexanone to ε-caprolactone with oxygen,bimetallic oxide catalysts FeCe（x:y-T） were synthesized by coprecipitation and characterized by X-ray diffraction（XRD）,N₂ adsorption-desorption,X-ray photoelectron spectroscopy（XPS） and scanning electron microscopy（SEM）.The catalysts were used to catalyze the oxidation of cyclohexanone.In addtion,the effects of experimental conditions such as solvent,catalyst dosage,reaction temperature and time were investigated.The results show that there is a synergistic effect between Fe₂O₃ and CeO₂,and the change of Fe/Ce mole ratio and calcination temperature have a significant impact on the activity of catalysts.FeCe（1:2-500） exhibited the best catalytic performance.After optimization of reaction conditions,the conversion of cyclohexanone and the selectivity of ε-caprolactone are both higher than 99%,and the catalyst can be reused for five times without significant decrease of activity.更多还原