Fluorescence confocal optical microscopy imaging of the grain boundary structure of zeolite MFI membranes made by secondary (seeded) growth

被引:91
作者
Bonilla, G [1 ]
Tsapatsis, M [1 ]
Vlachos, DG [1 ]
Xomeritakis, G [1 ]
机构
[1] Univ Massachusetts, Dept Chem Engn, Goessman Lab 159, Amherst, MA 01003 USA
基金
美国国家科学基金会;
关键词
confocal microscopy; zeolite membranes; inorganic membranes;
D O I
10.1016/S0376-7388(00)00549-4
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Fluorescence confocal optical microscopy (FCOM) was used to characterize MFI membranes made by secondary (seeded) growth. It is demonstrated that FCOM is a powerful tool for the non-destructive evaluation of zeolite membranes. This technique can provide two-dimensional, optical sections of the membranes with submicron resolution without physical damage to the sample. When contrasted with fluorescein-Na salt, it is shown that the grain boundary network in MFI membranes can be observed along the thickness of the membranes. Moreover, defects that do not propagate to the membrane surface acid, therefore, are not detected by SEM, can be clearly imaged. One example of such a defect are internal cracks in the membrane. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:103 / 109
页数:7
相关论文
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