Solution-Combustion Synthesis of 4CuO/Al2O3 Composite from Starting Solutions Containing Copper Acetate as Ballast
V. D. Zhuravleva, *, L. V. Ermakovaa, Sh. M. Khaliullina, **, K. V. Nefedovaa, and E. A. Sherstobitovab
a Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620990 Russia
b Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620108 Russia
Correspondence to: *e-mail: zhuravlev47@bk.ru
Correspondence to: **e-mail: shamil58@rambler.ru
Received 10 March, 2021
Abstract—The effect of copper acetate addition to an aqueous solution of aluminum nitrate and glycine on the solution-combustion synthesis (SCS) of 4CuO/Al2O3 nanocomposites was investigated by XRD, SEM, and DTA methods. The presence of copper acetate in starting solution favored the complete conversion of NO2 to N2 at off-stoichiometric glycine contents (φ < 1). The replacement of copper nitrate with copper acetate was found to give a 2-fold decrease in combustion temperature, which markedly raised the yield of target fine powder. Synthesized composites represented a mixture of amorphous γ-Al2O3 and crystalline CuO, Cu2O, and Cu. Upon annealing at 800–850°C, the formation of CuAl2O4 spinel was observed.
Keywords: solution-combustion synthesis (SCS), copper acetate, 4CuO/Al2O3 nanocomposite, NO2 reduction, CuAl2O4 spinel
DOI: 10.3103/S1061386221030110