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Investigation of the Surface Structure of the Zeolites FAU and EMT by High‐Resolution Transmission Electron Microscopy
Author(s) -
Alfredsson Viveka,
Ohsuna Tetsu,
Terasaki Osamu,
Bovin JanOlov
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199312101
Subject(s) - faujasite , transmission electron microscopy , amorphous solid , materials science , crystallography , zeolite , layer (electronics) , resolution (logic) , electron microscope , crystal (programming language) , electron diffraction , high resolution , hexagonal crystal system , surface (topology) , nanotechnology , chemistry , optics , diffraction , physics , organic chemistry , geometry , catalysis , remote sensing , artificial intelligence , geology , computer science , programming language , mathematics
Almost atomic resolution is achieved in images of the surface structures of zeolites obtained by electron microscopy, as demonstrated in studies of synthetic faujasite (FAU, shown on the right) and its hexagonal polymorph EMT. In contrast, the surface of a dealuminated form of zeolite Y was shown to be coated with an amorphous layer. The steps found on the crystal surface allow conclusions concerning crystal growth to be drawn.