| abstract |
A methanation reaction catalyst is for subjecting CO and/or CO2 to methanation reaction with hydrogen, and is a calcined product of a wet mixture of zirconia and/or a salt of Zr, a salt of a stabilizing element, a salt of Ni, and an inorganic oxide. The stabilizing element is at least one of element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ca, Mg, Mn, Fe, and Co, and the inorganic oxide is at least one of inorganic oxide selected from the group consisting of silica, alumina, titania, and ceria. When the inorganic oxide contains the silica, the mole ratio of the Ni atom with respect to the Si atom is 0.20 or more and 10.0 or less. When the inorganic oxide contains the alumina, the mole ratio of the Ni atom with respect to the Al atom is 0.20 or more and 7.0 or less. When the inorganic oxide contains the titania, the mole ratio of the Ni atom with respect to the Ti atom is 0.30 or more and 10.5 or less. When the inorganic oxide contains the ceria, the mole ratio of the Ni atom with respect to the Ce atom is 0.70 or more and 25.0 or less. |