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

Hernández Muñoz Wilson; Serrato Rodríguez Juan; Muñoz Saldaña Juan; Zárate Medina Juan

doi:10.1016/j.apradiso.2016.01.026

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.

Authors

Hernández Muñoz Wilson¹, Serrato Rodríguez Juan¹, Muñoz Saldaña Juan², Zárate Medina Juan¹

Affiliations

¹ Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58060 Morelia, Michoacán, México.
² Centro de Investigación y de Estudios Avanzados del IPN, Unidad Queretaro, Libramiento Norponiente No. 2000, Fracc. Real de Juriquilla, Queretaro CP 76230, México.

PMID: 26851822
DOI: 10.1016/j.apradiso.2016.01.026

Abstract

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.