The invention discloses a
rare earth perovskite typed
oxygen storage material used for the purification of automobile
tail gas, belonging to the field of automobile
tail gas catalyst technique. The general formula of the
oxygen storage material is La1-xAxMn1-yByO3; wherein, A is one of Sr, Y, Ce, Pr or Nd; B is one of Ni, Fe, Cu or Co; x and y are mol values. The
oxygen storage material provided by the invention has outstanding middle and low temperature
oxygen storage performance and high temperature
heat stability, can keep excellent
oxygen storage performance after high temperature aging, has the testing performance which is far higher than that of ceria-zirconia
oxygen storage material which is widely applied at present, meets the requirements of current automobile
tail gas
disposal technique on the low temperature performance and practical service life of the oxygen storage material, can replace the ceria-zirconia oxygen storage material to be applied in purification of automobile tail gas so as to widen the operation window of the purification catalyst of the automobile tail gas, and has strong generalized values. The process adopted by the
rare earth perovskite typed oxygen storage material is simple, has good
repeatability and is easy to realize the industrialization production.