title: Kinetic explosion and bistability in adsorption and reaction of acetic acid on Pd(110).
abstract: The adsorption and reaction of acetic acid with Pd(110) have been studied using thermal molecular beam reaction measurements and temperature-programmed desorption. Acetic acid adsorption results in the formation of acetate species which decompose to produce coincident CO(2) and H(2) desorption from the surface. C is deposited on the surface from the dehydrogenation of the methyl group. In combination, these steps are found to exhibit unusual kinetics including (i) a "surface explosion" during heating and (ii) bistability in the reaction profile for heating and cooling curves. This is the first report of such behaviour for a complex system during in situ reaction.
authors.affiliation: Wolfson Nanoscience Laboratory, School of Chemistry, Cardiff University, Cardiff, UKCF9 3TB. bowkerm@cf.ac.uk
authors.forename: Michael
authors.initials: M
authors.lastname: Bowker
authors.forename: Chris
authors.initials: C
authors.lastname: Morgan
authors.forename: Vladimir P
authors.initials: VP
authors.lastname: Zhdanov