| 摘要 |
PURPOSE:To obtain a catalyst having a large void volume and low air passing resistance by preparing an org. colloidal dispersion liquid containing an element such as platinum or rhodium and immersing a metal plate in the dispersion liquid and subsequently drying and baking the treated metal plate to thinly and uniformly support the catalytic component thereon. CONSTITUTION:An element such as platinum, rhodium or palladium having a particle size of several 10 to several 100Angstrom is uniformly and stably dispersed in an org. solvent such as toluene or xylene to prepare an org. noble metal colloidal dispersion. When a metal plate is immersed in this dispersion, liquid the colloidal noble metal migrates to the surface of the metal plate to be strongly bonded thereto. Thereafter, the metal plate is dried and baked to remove the org. component to leave only the catalytically active component on the surface of the metal plate. The active component is supported on the surface of the metal plate in a highly dispersed particulate state. |
