Identification of surface molecular hydrates on solid sulfuric acid films.
Infrared spectroscopic and secondary ion mass spectrometric studies reveal the presence of a stable molecular hydrate on the surface of condensed thin films of ionic sulfuric acid hydrates. This surface species is observed to play a role in the interaction of ammonia, reacting rapidly until the material is depleted. A slower, continuous process is also observed, attributed to a diffusion-limited reaction between incoming NH3 and H3O+ located at or near the surface.
Department of Chemistry, University of York, Heslington, York YO1 5DD, UK.
Suzanne B
SB
Couling
Karen L
KL
Nash
John
J
Fletcher
Alex
A
Henderson
John C
JC
Vickerman
Andrew B
AB
Horn