作　　者： ; ; ; ; ; ;

机构地区： 广东工业大学轻工化工学院

出　　处： 《化学世界》 2006年第1期43-46,50,共5页

摘　　要： 研究了经金属硝酸盐浸渍改性的Y型分子筛对γ-丁内酯与乙醇胺气相反应合成N-羟乙基吡咯烷酮(NHP)反应的催化性能,结果表明,分子筛的催化性能主要随改性阳离子的变化而不同。其中,CuY具有最高的初始活性,γ-丁内酯转化率达到50%以上,而经Cu离子改性的含稀土Y型分子筛具有较高的催化活性与稳定性。进一步考察了焙烧温度、反应温度、催化剂粒径等对催化剂性能的影响。再生实验表明,反应过程中分子筛的失活是不可再生的,说明是由于反应过程中生成的水蒸汽使分子筛的结构遭到破坏,而含稀土的分子筛由于含有稀土而使其具有较高的水热稳定性。 Catalytic properties of Y zeolites modified by impregnating with some metal nitrates for gas-phase reaction of γ-butyrolactone and ethanolamine to obtain N-hydroxyethyl pyrrolidone are investigated. It is found that catalysts activities of the zeolites change with the metal ions greatly. Among the catalysts, the initial activity of CuY is the highest （conversion rate is up to 50% after 10 min from the beginning）. Both REY and CuREY show much high activity and stability. Influences of Calcining temperature, particle size of zeolites and reaction temperature on catalytic properties are discussed. It can be concluded from regeneration experiments that the deactivated zeolites can not be regenerated effectively, because the structure of the zeolites is destroyed by steam of both REY and CuREY are better due to the presence steam produced during the reaction process. Resistance to of the rare earth elements.

关 键 词： 型分子筛 丁内酯 羟乙基吡咯烷酮 催化性能

领　　域： [化学工程] [理学] [理学]