To produce multiple oxide powder which has a large specific surface area and a large fine pore volume even after endurance at a high temperature, and in which, even when used as a catalyst carrying noble metals, the growth of the grains of the noble metals can be suppressed after endurance at a high temperature.
The powder consists of a multiple oxide of Zn oxide and the oxide of a metal M which is not allowed to enter into solid solution with the Zr oxide, and in which the Zr oxide and the oxide of metal M are uniformly dispersed on an nm scale. Since different oxides are acted as mutual barriers, sintering is suppressed. Further, fine pores formed between the oxides are made into mesofine pores on an nm scale, and a large specific surface area and a large fine pore volume can be realized.
SUDA AKIHIKO
IMAGAWA HARUO
MORIKAWA AKIRA
MATSUNAGA SHINICHI
YAMAMOTO TOSHIO
SUZUKI TADASHI
| JP2001170500A | 2001-06-26 | |||
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