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