Stabilization of surface reaction intermediates by added metal atoms on metal surfaces of low free energy.
Dynamic restructuring of the Ag(111) surface occurs during the reaction of sulfur dioxide with Ag(111)-p(4 x 4)-O at 300 K, resulting in the incorporation of added silver atoms into the unit cells of both adsorbed sulfite and sulfate. This result clearly demonstrates that incorporation of metal atoms into the structures of adsorbates and reaction intermediates is not restricted to more open, higher free energy single crystal planes. These observations indicate that the participation of added metal atoms must be considered in the theoretical treatment of metal catalyzed reactions.
Zhou
Ling
L
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Gao
Weiwei
W
Klust
Andreas
A
Madix
Robert J
RJ