The hydrogenation method according to claim 3, wherein the catalyst supplied to the hydrogenation reaction further contains at least one type or two or more types of elements selected from the group consisting of cerium (Ce) , lanthanum (La), magnesium (Mg), calcium (Ca), strontium (Sr), ytterbium (Yb) , gadolinium (Gd) , terbium (Tb) , dysprosium (Dy) and yttrium (Y) . 5.