According to a second aspect of the present invention, in the catalytic material according to the first aspect of the present invention, the rare earth metal R may be contained in the form of oxide, in such a manner that {HEAD ~ a ratio} of RO/ is {TAIL ~ 12 mol %} or more 
is
According to a second aspect of the present invention , in the catalytic material according to the first aspect of the present invention , the rare earth metal R may be contained in the form of oxide , in such a manner that { HEAD ~ a ratio } of RO/ is { TAIL ~ 12 mol % } or more
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH