Synthesis of lanthanum aluminate by reverse chemical precipitation using pseudoboehmite as alumina precursor

Appl Radiat Isot. 2016 Nov:117:96-99. doi: 10.1016/j.apradiso.2016.01.026. Epub 2016 Jan 27.


Lanthanum aluminate was synthesized by using reverse precipitation. A lanthanum nitrate salt in solution allowed the precipitation of lanthanum hydroxide onto the surface of the pseudoboehmite particles. Pseudoboehmite was previously synthesized out of aluminum sulfate which after characterization presents a poor crystallized structure. A Perovskite-type lanthanum aluminate was obtained at different temperature and calcination time. When calcination was set up to 1500°C to 3°C/min pure, high crystallinity and highly agglomerated lanthanum aluminate is obtained, relative density of 94% was reached.

Keywords: Lanthanum aluminate; Psuedoboehmite; Reverse precipitation.