Effect of Rhodium Distribution on Thermal Stability of Nanoporous Palladium-Rhodium Powders
Nanoporous palladium−rhodium alloys with nonuniform Rh distribution show enhanced thermal stability of pores in Rh-rich regions when the surface is under vacuum in either oxidized or reduced form. However, when heated in the presence of hydrogen, accelerated rearrangement of surface atoms is observed, and pores are less stable.
Ong, M.D.; Jacobs, B. W.; Sugar, J.D.; Grass, M. E.; Liu, Z.; Buffleben, G. M.; Clift, W. M.; Langham, M. E.; Cappillino, P.J.; Robinson, D. B. Effect of Rhodium Distribution on Thermal Stability of Nanoporous Palladium–Rhodium Powders. Chem. Mater. 2012, 24, 996−1004. DOI: 10.1021/cm202688m