Provided are coated, multi-zoned catalyst substrates that trap and combust
hydrocarbon and nitrogen oxides pollutants in a single monolith
substrate. In some embodiments, the multi-zoned catalysts contain both
radial and axial zones. The zones can be formed by deposition of
segregated coating compositions (or washcoats) containing platinum group
metals and pollutant adsorbent materials to form layers along the length
and radius of the honeycomb substrate. The invention also relates to
exhaust gas treating systems that incorporate the multi-zoned catalysts.