The results of X-ray and IR spectroscopic studies of samples of non-stoichiometric alumomagnesian spinel Mg 1-x Al 2-y O 4-z (OH) z , formed after treatment with concentrated acids of magnesia-alumina spinel synthesized by the sol-gel method at temperatures of 800 and 1100 ° C. It was found that three phases of nonstoichiometric alumina-magnesian spinel Mg 1-x Al 2-y O 4-z (OH) z with tetragonal lattices and different types of superstructure. X-ray diffraction patterns of two phases correspond to body-centered gratings with parameters a = 5.712 (3) A, c = 8.092 (3) A and a = 5.714 (3) A, c = 18.833 (35) A. : a = 5.718 (3) A, c = 24.261 (27) A. Tab. 5, bibliography: 23 titles.
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UDK 546.621'46'21':539.26
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A. N. Tsvigunov, A. V. Belyakov, P. D. Sarkisov, P. P. Faikov, N. T. Andrianov, B. V. Zhadanov, and Yu. V. Ivleva Synthesis of nonstoichiometric alumomagnesia spinel with tetragonal lattice. Steklo i keramika. 2006:79(11):-. (in Russ). UDK 546.621'46'21':539.26
