TEM-tomography of FAU-zeolite crystals containing Pt-clusters

被引：25

作者：

Bovin, JO

Alfredsson, V

Karlsson, G

Carlsson, A

Blum, Z

Terasaki, O

机构：

[1] SWEDISH UNIV AGR SCI,DEPT PLANT BREEDING RES,S-26831 SVALOV,SWEDEN

[2] TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN

来源：

ULTRAMICROSCOPY | 1996年 / 62卷 / 04期

基金：

瑞典研究理事会;

关键词：

D O I：

10.1016/0304-3991(96)00002-2

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

A method for preparing ultrathin sections (similar to 20 nm) of inorganic solids has been developed using ultramicrotomy of resin-embedded crystal fragments. Undamaged crystals, oriented along a crystallographic direction, could be imaged with transmission electron microscopy (TEM) at a resolution better than 0.5 nm. The true internal structure of the crystals could be investigated by imaging the second in a series of at least three consecutive ultrathin sections. Such TEM-tomography proved that Pt-ion exchanged FAU zeolite crystals, after reduction and oxidation, are occupied internally and randomly of large platinum clusters mainly in the {111}-twin planes. TEM-tomography could be useful in man made nanostructures like semiconductors, epitaxial thin films, hard metal coatings, ceramics, catalysts, and biomaterials.

引用

页码：277 / 281

页数：5

共 8 条

[1] INVESTIGATION OF THE SURFACE-STRUCTURE OF THE ZEOLITES FAU AND EMT BY HIGH-RESOLUTION TRANSMISSION ELECTRON-MICROSCOPY [J].