| 摘要 |
The invention concerns a mixed electronic and O<SUP>2-</SUP> anion conductive perovskite material, of formula (I): A<SUP>(a)</SUP><SUB>(1-x-u)</SUB>A'<SUP>(a-1)</SUP><SUB>x</SUB>A''<SUP>(a'')</SUP><SUB>u</SUB>B<SUP>(b)</SUP><SUB>(1-s-y-v)</SUB>B<SUP>(b+1)</SUP><SUB>s</SUB>B'<SUP>(b+beta)</SUP><SUB>y</SUB>B''<SUP>(b'')</SUP><SUB>v</SUB>O<SUB>3-d</SUB>, wherein: a, a-1, a'', b, b+1, b+beta et b'' are integers representing respective valences of the atoms A, A', A'', B, B', B''; a, a'', b, b'', beta, x, y, s, u, v et delta such that the electrical neutrality of the crystal lattice is preserved; A represents an atom selected among scandium, yttrium or in the families of lanthanides, actinides or alkaline-earth metals; A'' represents an atom selected among Al, Ga, In, or Tl; B, B', B'' represents an atom selected among the transition metals, Al, In, Ga, Ge, Sb, Bi, Sn or Pb. The invention also concerns the method for preparing said material and its use as mixed conductive material of a catalytic membrane reactor, for use in synthesizing synthetic gas by oxidation of methane or natural gas.
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