COMPOSITION COMPRISING LANTHAN PEROVSKITE ON AN ALUMINUM OR ALUMINUM OXYHYDROXIDE SUPPORT, PREPARATION METHOD AND USE IN CATALYSIS

摘要

The composition of the invention comprises a perovskite of formula LaMO in which M represents at least one element selected from iron, aluminum or manganese, in the form of particles dispersed on a support of alumina or aluminum oxyhydroxide , characterized in that after calcination at 700 ° C, 4 hours, the perovskite is in the form of a pure crystallographic phase and in that the perovskite particles have a size is at most 15 nm. The composition of the invention can be used in the field of catalysis.