| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst wherein ultrafine particles of a metal or a metal oxide are highly densely dispersed in a porous carbon body by using a wood impregnated with a wood preservative added to waste wood, especially a CCA preservative being a chromium/copper/arsenic compound, a natural hydrocarbon polymeric compound containing heavy metals or the like as a precursor and converting the same into the porous carbon body through a carbonization process, and a material being the porous carbon body having the above mentioned feature and a metal catalyst and excellent as an electrode body for fuel cell. <P>SOLUTION: Cellulose, hemicellulose, lignin and the like being wood components of wood impregnated under pressure with an aqueous solution containing metal ions such as a CCA-treated wood, and ultrafine particles of a metal are infiltrated at a molecular level. A raw material using these components as a precursor is treated in the carbonization process in an air controlled state to prepare the porous carbon body to obtain the catalyst in which ultrafine particles of the metal or metal oxide are highly densely dispersed. An electrode catalyst is a film-electrode joined body having micropores wherein the porous carbon body in which ultrafine particles of the metal oxide are dispersed in a high concentration and a polyolefin electrolytic polymer are compounded. <P>COPYRIGHT: (C)2004,JPO |
