Influence of a doubly charged cation nature on the formation and properties of mixed oxides MAlO
x
(M = Mg2+, Zn2+, Ni2+) obtained from the layered hydroxide precursors |
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| Authors: | O B Belskaya N N Leont’eva T I Gulyaeva S V Cherepanova V P Talzi V A Drozdov V A Likholobov |
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| Institution: | 1. Institute of Hydrocarbons Processing of the Siberian Branch of the Russian Academy of Sciences, 54 Neftezavodskaya ul., 644040, Omsk, Russian Federation
2. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, 5 Akad. Lavrentieva prosp., 630090, Novosibirsk, Russian Federation
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| Abstract: | Influence of the nature of a doubly charged cation in the layered double hydroxides (LDH) on the conditions of formation and properties of mixed oxide phase MAlO x (M = Mg2+, Zn2+ and Ni2+), its ability to reconstruct the structure of the original precursor under contact with water has been studied. Hydrotalcite-like compounds and corresponding oxides with different M2+: M3+ ratio were investigated by XRD, TEM, TG-DTG-DTA, 27Al NMR, N2 adsorption, and differentiating dissolution. It has been found that the nature of the cation M2+ influences the conditions of LDH thermal decomposition, structural and textural characteristics of the formed mixed oxides. The obtained data can be used to synthesize the oxide supports with desired acid-base and adsorption properties. |
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