硅灰石矿物发光原料中Fe^(2+)的去除与CaSiO_3∶Eu^(3+)的光谱特性  

Extraction of Fe^(2+) from Wollastonite and Spectral Property of CaSiO_3∶Eu^(3+)

作　　者：邓岳锋[1] 甘树才[1] 宋艳华[1] 曹林[2] 赵婕[2] 

机构地区：[1]吉林大学化学学院,长春130026 [2]北京科技大学材料物理系

出　　处：《应用化学》2004年第12期1261-1264,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目 ( 4 0 0 72 0 13 )

摘　　要：提出了用草酸 邻菲啉去除硅灰石中Fe2 + 的方法 ,研究了浸取剂的浓度、浸取时间和温度等条件对Fe2 + 的去除率的影响 ,在最佳的浸取条件下 ,Fe2 + 的去除率达到 98 35 %。在去除猝灭剂后的硅灰石矿物中 ,掺加适量的稀土激活剂Eu3 + ,通过高温固相法制成荧光发光材料 ,发光强度明显提高 。The extraction of ferrous ions from natural wollastonite was carried out with a mixture of oxalic acid and O-phenanthroline. The leaching percentage of ferrous ions, concentration of extracting reagent, extracting time and temperature on the extraction were investigated in the extraction procedure. Under the optimum extracting conditions, the leaching percentage of ferrous ions is up to 98.35%. The luminescence material was synthesized by ceramics method with Eu 3+-doped wollastonite.And the luminescence intensity of the material almost approached that of chemically synthesized CaSiO 3∶Eu 3+.

关 键 词：硅灰石  草酸  邻菲哕啉  除Fe^2+  发光材料  光谱特性 

分 类 号：O644[理学—物理化学]