CATALYST FOR PURIFICATION OF EXHAUST GAS FROM MOTORCYCLE

摘要

PURPOSE:To obtain a durable catalyst for a motorcycle having low back pressure and high purifying performance by sticking an inorg. metal oxide contg. a noble metal to a wire net or punched metal carrier made of ferritic stainless steel contg. Al and Cr. CONSTITUTION:Ferritic stainless steel stock contg. 0.5-10wt.% Al and 5-30wt.% Cr is fired to form whiskers on the surface and a wire net or punched metal carrier is produced. An inorg. metal oxide such as alumina or silica contg. a noble metal such as Pt or Pd is stuck to the carrier and this carrier is formed into a cylindrical shape enabling fixing in an exhaust cylinder. A catalyst for purification of exhaust gas from a motorcycle fixable in the exhaust pipe of the motorcycle and having superior exhaust gas purifying performance, back pressure characteristics and durability is obtd.