| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinel monolithic catalyst, manufacturing method therefor and a method of using it for reducing NOx in a waste combustion gas. SOLUTION: This spinel monolighic catalyst contains the spinel shown by general formula I: AxB(1-x)E2O4 (wherein all of A are Cu or half of A or less may be substituted with Co, Fe, Mn or Cr; B is at least one element selected from the group consisting of Zn, Mg, Ca, Zr, Ce, Sn, Ti, V, Mo and W; all of E are Al or half of E or less may be substituted with Fe2O3, Cr2O3, Ga2O3, La2O3 or a mixture of them; and (x) is 0-1, preferably 0-0.9). The spinel monolighic catalyst is obtained by manufacturing a particularly monolithic sintered compact by using the spinel or subsequently covering at least the surface of the sintered compact with an active composition, impregnating the obtained sintered compact with the solution containing transition elements of group V of the periodic table or adding the oxides or salts of these elements to the obtained sintered compact, drying and sintering it. |
