P 93 Proton magnetic resonance and the state of hydrogen in beryllium hydroxide / R. N. Pletnev, V. S. Kiiko, Yu. N. Makurin, A. A. Nepryakhin // Refractories and Industrial Ceramics. - 2005. - Vol. 46, № 4. - P273-275 : il. - Bibliogr. : p. 275 (8 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ПРОТОННЫЙ МАГНИТНЫЙ РЕЗОНАНС -- ВОДОРОД -- ГИДРОКСИД БЕРИЛЛИЯ Аннотация: Proton magnetic resonance spectra of beryllium hydroxide β-Be(OH)2 and products of its thermal decomposition are studied at room temperature and 123 K. It is shown, based on these spectra and differential thermal analysis and x-ray diffractometry data, that, heated to above 500 K, -Be(OH)2 decomposes into a finely dispersed BeO and H2O to convert finally to an amorphous beryllium oxyhydroxide. At above 600 K, a crystalline BeO is formed involving dehydration of the finely dispersed BeO and amorphous oxyhydroxide phase Полный текст |