| abstract |
Disclosed herein is an exhaust gas catalyst consisting essentially of a first metal selected from copper, nickel and cobalt, a rare earth metal, and a third metal selected from manganese, vanadium, iron and chromium, all in an oxide form and on a suitable catalyst support. The preferred catalysts contain copper, lanthanum and manganese in an atom ratio of about 1:2:3. The catalysts are resistant to lead. |