油页岩灰渣提取氧化铝制备铝酸盐发光材料

利用干馏后的油页岩灰渣，湿法提取氧化铝作为发光材料基质，经采用高温固相法合成 CaAl2O4 : Eu3 + ，R + ( R = Li，Na，K，Rb) 荧光粉。最佳合成条件为: 烧结温度1 200 ℃，烧结时间3 h，助熔剂加入量3 wt%，激活离子配比3 mol%; 实验发现辅助激活离子为Li + 时，CaAl2O4 : Eu3 + ， Li + 的发光强度最强。样品荧光光谱分析结果表明，发射光谱在615 nm 处出现强谱峰，归属为Eu3 + 的5D0→7F2 跃迁辐射。

Aluminate luminescence material preparation with alumina extracted by oil shale ash

CaAl2O4：Eu3＋,R＋（R=Li,Na,K,Rb） phosphor powder was prepared by high temperature solid-state method,in which Alumina has been extracted in wet-process as the substrate of luminescent materials used dry distillated oil shale ash.The optimal synthetic conditions are sintering temperature and time are 1 200 ℃ by 3 h,the concentration of fluxing agent and activated ion ratio are 3 wt%and 3 mol%,respectively.The experiment indicated when auxiliary activated ion is Li＋,the luminescent intensity of CaAl2O4：Eu3＋,Li＋ is the strongest.The analysis of fluorescence spectrum showed that the emission spectrum exhibited a sharp peak at 615 nm,ascribed to 5D0→7F2 transition of Eu3＋.