Prevention of Hydrogen Sulphide Formation on Three-Way Catalysts

Sulfur adsorption and release properties of bimetallic Pd–Ni supported catalysts

“…The presence of H 2 S in the cars' exhaust is undesirable due to the consequent unpleasant odor and toxicity. For this reason, the addition of a second metal, capable of binding sulfur, to the TWC has been considered [22]. It has been concluded that the presence of NiO in the TWC prevents both catalyst poisoning and formation of H 2 S [5,[23][24][25].…”