| 摘要 |
PROBLEM TO BE SOLVED: To provide a catalyst which can always improve its catalytic performance even when used in different conditions since the distribution of its metal catalyst can be optimized in consideration of use conditions and a method for determining the distribution of the metal catalyst. SOLUTION: The method includes a division process S1 in which an imaginary carrier with the metal catalyst distributed approximately uniformly is assumed, and the imaginary carrier is divided into a plurality of cells, a simulation process S2 in which a simulation wherein a prescribed gas is circulated in relation to the imaginary carrier in prescribed conditions is carried to obtain the amount of the reacted gas in relation to the amount of the metal catalyst of each cell, and an operation process S3 for assuming the imaginary carrier in which the amount of the metal catalyst of a cell low in the amount of the reacted gas in relation to a required amount of the metal catalyst is reduced, and the amount of the metal catalyst of a cell high in the amount of the reacted gas in relation to the amount of the metal catalyst is increased. The distribution of the metal catalyst is determined by obtaining the amount of the metal catalyst of each cell by repeating the simulation process S2 and the operation process S3 prescribed times. COPYRIGHT: (C)2010,JPO&INPIT
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