Effect of Ni-aluminate Support for Enhancing Activity of Pd Based Three-way Catalyst.

Elucidation of catalytic NOx reduction mechanism in an electric field at low temperatures

“…At 300–500 ppm C 3 H 6 , the NO conversion rate decreases considerably, which suggests that the NO adsorption was prevented by C 3 H 6 because Pd has a strong adsorption capacity for HCs such as C 3 H 6 . 12…”

DRIFTS–XANES study of Pd-Ni/(Ce,Zr)Ox/Al2O3 model automotive catalysts

“…In this sense, an approach of interest from an economical point of view consists in modifying the catalytic properties of palladium by introduction of a second base metal. Among these, in spite of legislative restrictions for its use in some countries, nickel has shown promising properties; thus, investigations by Nissan researchers have proposed that interactions between Pd and Ni can be beneficial for the light-off performance of the TWC [7,8]. This has been explained as a beneficial effect of the establishment of interactions between palladium and nickel aluminate crystals which apparently can enhance the NO reduction performance in catalysts with relatively high nickel loading [7,8].…”