Abstract: This work was aimed at analyzing the structures of various aluminum oxides by means of the method of radial distribution of atoms. The transitional forms of aluminum oxide obtained from the hydroxides - pseudoboehmite, boehmite, bayerite, and hydrargillite - were examined previously. It is shown that all forms of the oxides (other than alpha-Al2O3) are characterized by very similar RDA curves; the fine distinctions between these curves are related to differences in the distribution of cations among octahedral and tetrahedral positions of the densely packed, practically cubic anionic skeleton. The replacement of aluminum by a trivalent cation in the protospinel structure does not lead to any change in electrical neutrality. The loss of hydroxyl groups with increasing temperature, the same as in the case of pure oxides, requires a rearrangement of structure, either through the formation of delta - and THETA -like structures or through the formation of defects in the anionic skeleton.

Cite: Ushakov V.A. , Moroz E.M. , Levitskii E.A.
X-Ray-Diffraction Study of Aluminum-Oxides. 3. Analysis of Structure of Various Aluminum-Oxides by X-Ray-Method of Radial-Distribution of Atoms
Kinetics and Catalysis. 1985. V.26. N5. P.1036-1042. WOS Scopus РИНЦ

Original: Ушаков В.А. , Мороз Э.М. , Левицкий Э.А.
Рентгенографическое исследование оксидов алюминия. III. Анализ структур различных оксидов алюминия рентгеновским методом радиального распределения атомов
Кинетика и катализ. 1985. Т.26. №5. С.1200-1206. РИНЦ ANCAN

Dates:

Submitted:	Jun 29, 1984
Published print:	Sep 1, 1985

Identifiers:

Web of science:	WOS:A1985C840500009
Scopus:	2-s2.0-0022122852
Elibrary:	30603139

Citing: Пока нет цитирований