Journal
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
Volume 58, Issue 6, Pages 644-649Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036023613060168
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- Presidium of the Russian Academy of Sciences [8P6]
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A method was developed for introducing gallium into Mg-Al hydrotalcites-precursors of oxide catalysts for oxidative dehydrogenation of alkanes. Samples of oxide catalysts were synthesized that contained gallium oxide and also oxides of magnesium, aluminum, chromium, vanadium, molybdenum, and niobium in various combinations. The catalytic properties of the produced catalysts were studied in the oxidative dehydrogenation of ethane, propane, isobutane, and hexane. It was established that the addition of gallium to catalysts increases the ethylene and propylene yields in the oxidative dehydrogenation of ethane and propane. New hydroxo salts with a layered structure of the hydrotalcite type were synthesized: ternary magnesium gallium aluminum hydroxonitrate of variable composition [Al1 - n Ga (n) Mg (m) (OH)(3 + 2m - 1)][NO3 center dot nH(2)O] and quaternary magnesium gallium chromium aluminum hydroxonitrate of the composition [AlGaCrMg1.8(OH)(11.6)][NO3 center dot nH(2)O]; these salts were found to be isostructural.
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