| 摘要 |
PROBLEM TO BE SOLVED: To provide a functional material of superior function of absorbing oxygen under the oxidizing atmosphere and exhaust oxygen under the reduction atmosphere by using an element of specified value in a cerium oxide represented by the specified formula. SOLUTION: A function material is represented by the formula of (AxCe1 -X)O2 (In the formula, A represents at least one element selected out of a group Y, Sc and lanthanoid, and 0.1<X<1). The value of X in the formula is set preferably in the range of approximately 0.2-0.7, more preferably approximately 0.3-0.7 (both included). As the particle diameter of the functional material, approximately 0.01-100μm is preferred. The functional material of superior capability of absorbing oxygen under the oxidizing atmosphere and existing oxygen under the oxidizing atmosphere can be provided by the above arrangement, and also an oxidizing catalyst, a combustion catalyst, a methanol modified catalyst and an electrode catalyst of high catalyst activities and superior continuity of catalyst activities for achieving the efficient utilization of energy resources and the reduction of generation of environmental pollutants can be provided by the application of the above arrangement. |
