摘要
利用程序升温还原（ＴＰＲ）方法，研究了Ｌ型沸石基质中Ｎｉ^（２＋）、Ｅｕ^（３＋）离子的还原活性。同时，借助Ｘ光电子能谱（ＸＰＳ）技术，对Ｌ型沸石基质中Ｎｉ^（２＋）、Ｅｕ^（３＋）离子还原前后的价态进行了分析，结果表明Ｌ型沸石基质中Ｎｉ^（２＋）、Ｅｕ^（３＋）离子的还原活性较高，可被氢气还原为低价甚至零价。镍离子的存在能促进 Ｅｕ^（３＋）离子的还原，提高了Ｅｕ^（３＋）离子的还原百分比。
With the method of temperature programmed reduction(TPR), the reductive activity of the Ni^(2+) or/and Eu^(3+) ions in zeolite L was studied. At the same time, the valances of Nickel and Europium after and before reduction were examined by means of X-ray photoelectron spectroscopy (XPS). It is shown that the reductive activity of the Ni^(2+) or/and Eu^(3+) ions in zeolite L is very high. The existence of Ni^(2+) ion can promote the reduction of Eu^(3+) ion and raise the percentage of reduced Eu^(3+) ion.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2000年第3期467-471,共5页
Chinese Journal of Inorganic Chemistry
关键词
镍离子
铕离子
L型沸石
还原沸石
还原活性
nickel ion
europium ion
zeolite L
reductive activity temperature programmed reduction
