We present an X-ray photoemlsslon spectroscopy study of some rareearth ion(IU)excha Y-type z+oIites (Ln-u). The 4f levels of Eu-Y mere drastxally changed by degassmg at low temperature; the relatwe intensity of the 4f levels for Eu3 + decreased and the 4f lme of Eu'+ increased as the sample was dega
X-ray diffraction study of Fe(III)-exchanged x-type zeolite
β Scribed by N.P. Evmerides; B. Beagley; J. Dwyer
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 870 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0020-1693
No coin nor oath required. For personal study only.
β¦ Synopsis
243 Three alternative models are proposed to explain the map obtained from a difference Fourier synthesis for a NaFeX zeolite (30% exchanged). The models are based on the extent of distortion of the zeolitic structure which arkes when sodium ions are replaced by ferric ions,
π SIMILAR VOLUMES
X-ray diffraction and absorption experiments were performed to determine the structure of commercial sodium silicate glasses before and after a silver-sodium ion exchange. EXAFS measurements at the Na and Ag K-edge display the transition of the sodium environment consisting of five oxygens analogous
Polyaniline (PAn), a n important conducting polymer, was synthesized chemically. Percentage crystallinity of' PAn on doping with various dopants (viz., hydrochloric acid, formic acid, iodine, methylene blue) has been investigated using wide-angle X-ray diffraction analysis. It is observed that perce