Acetic acid adsorption and decomposition on Pd(1 1 0)

摘要: Abstract The reaction of acetic acid with Pd(1 1 0) has been investigated using temperature-programmed desorption (TPD) and a molecular beam reactor. sticking is very efficient results in hydrogen evolution acetate formation at room temperature. decomposes between 320 440 K to produce CO 2 coincidently leaves C adsorbed on the surface. presence carbon changed profile after readsorbing surface, manifesting an autocatalytic decomposition profile, half-height width as low 9 slowed rate (higher peak temperature). Surprisingly, higher temperatures where unstable (>450 K), continues steady-state not poisoned by build-up crystal. This due fact that most deposited lost from surface bulk facile manner above about 450 K, leaving reactive which apparently continually available for decomposition. appears be 0.5 monolayers c(2 × 2) structure, acts template increased stability ordering adlayer.