Essentially the first metal, is by a second metal and optionally made of an oxide form of a third metal, the first metal is either Ca or Ba, and in an amount of 5-80 wt% present in the composition, the second metal is Al, and is present in the composition in an amount of 5-80 wt%, is selected from the group the third metal is made of La, Ti and Zr, and 0-17 present in an amount by weight%, all weight percentages calculated as oxides, and the weight of the reference of the oxide composition, an oxide composition, a) first, second and prepare a physical mixture comprising the third metal solid compound optional, b) without forming an anionic clay, followed by aging in some cases the physical mixture, and c) firing the mixture oxide composition is available from it. The composition, in order to passivate the metal, are suitable for use in the FCC process, have only effect that is minimized relative to the hydrothermal stability of the zeolite.