| 摘要 |
PROBLEM TO BE SOLVED: To provide a catalyst burning method, capable of burning a combustible gas stably within a wide temperature range. SOLUTION: A combustible gas is burnt by a method wherein a catalyst, obtained by coating a composite oxide, consisting of at least two kinds or more of oxides among the oxides of alumina, silica, tytania and zirconia, and a powder, obtained by bearing platinum family except palladium and palladium oxide on a bearer containing the oxides of rare earth elements, on a heat resistant substrate, is arranged at the fore stage of a combustible gas flow passage while another catalyst, obtained by coating the powder of lanthanum perouskite type oxides, shown by a formula of La1-x Ax Me1-α O3 (0<x<=0.6, A: at least one kind of Ca, Sr, Ba, Me: at least one kind of elements of, Cr, Mn, Fe, Co, Ni, α>0) on a heat resistant substrate, is arranged at the rear stage of the former catalyst. |
