8-羟基喹啉在沸石表面行为研究中的探针作用  

Luminescence as a Probe of 8-Hydroxyquinoline Complexes on Zeolite Surface

作　　者：赵双霞[1] 杜海燕[1] 刘春生[1] 孙家跃[1] 

机构地区：[1]抚顺石油学院石化系

出　　处：《石油化工高等学校学报》1998年第2期10-14,共5页Journal of Petrochemical Universities

摘　　要：尝试利用８－羟基喹啉作探针，用荧光光谱技术来获得沸石外表面的新信息。研究了ＮａＹ及Ｂａ２＋、Ｃａ２＋、Ｍｇ２＋、Ａｌ３＋交换ＮａＹ沸石表面的８－羟基喹啉络合物荧光光谱。其中Ｍｇ２＋交换沸石表面形成的络合物荧光强度最强。对Ｍｇ２＋、Ｃａ２＋和Ｂａ２＋离子所形成的络合物荧光强度随金属离子半径增大而减弱，峰位规律性地向长波移动。Ｍｇ２＋交换的ＮａＹ沸石形成络合物的适宜ｐＨ值在１０～１１，Ａｌ３＋交换ＮａＹ沸石的ｐＨ值在８～１０。随吸附液ｐＨ值增加，Ｍｇ２＋和Ａｌ３＋的络合物荧光强度先增加后下降，并且峰位向短波移动。The property of the zeolite Y surface has been studied by the luminescence technique with oxine as a probe. Fluorescence spectra of the oxine complexes on the surface of NaY,Mn+-exchanged NaY(Mn+=Ca2+、Mg2+、Al3+、Ba2+) are investigated. Of all, the luminescence of complex on the surface of Mg2+-doped Y zeolite is the strongest. The fluorescence of complexes on the surface of zeolites exchanged in decreasing order: Mg2+、Ca2+ and Ba2+, and the bands shift to the long -wave with the increase of the exchanged cation radius. To form magnesium complex, the suitable data for pH of absorbed solution range from 10 to 11; to form aluminium complex ,the data range from 8 to 10. With the increase of pH, the fluorescence of metal (Mg2+、Al3+)complexes firstly increases, then decreases, and the bands on the spectra shift to the short-wave.

关 键 词：沸石 荧光光谱 羟基喹啉 表面化学 探针 

分 类 号：TQ424.25[化学工程]