Effect of Rhodium Distribution on Thermal Stability of Nanoporous Palladium-Rhodium Powders

Authors

Markus D. Ong, Whitworth University
Benjamin W. Jacobs, Sandia National Laboratories
Joshua D. Sugar, Sandia National Laboratories
Michael E. Grass, Lawrence Berkeley National Laboratory
Zhi Liu, Lawrence Berkeley National Laboratory
George M. Buffleben, Sandia National Laboratories
W. Miles Clift, Sandia National Laboratories
Mary E. Langham, Sandia National Laboratories
Patrick J. Cappillino, Sandia National Laboratories
David B. Robinson, Sandia National Laboratories

Document Type

Article

Publication Date

3-2012

Abstract

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.

Recommended Citation

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