Ordered overlayers of aniline and phenol on Pd(110): Surface structure and bonding

Influence of Acid Modification on Selective Phenol Hydrogenation Over Pd/Activated Carbon Catalysts

“…The strong interaction of Pd and the surface p sites of C-A and C-AN was previously shown to lead to modification of the chemical properties of Pd [33]. Two adsorption configurations of phenol on Pd are known [34]: one is r-adsorption via oxygen, and the other is p complexation via the aromatic ring. For both configurations, phenol adsorption on Pd is weakened if the electron density of Pd is increased.…”

Mechanisms for formation, chlorination, dechlorination and destruction of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)

“…By analogy with phenol, the fate of the chlorophenol molecule upon chemisorption on metallic surfaces is believed to involve O-H bond fission (its weakest bond) and the resulting formation of a surface phenoxy species [108][109][110]. In a DFT study which used a single CuO dimer to represent a CuO surface it was found that the formation of 2-chlorophenoxy from O-H fission in the 2-chlorophenol molecule was rendered facile by the CuO dimer and the overall process was significantly exothermic, in contrast to the uncatalyzed gaseous process [111].…”

The surface state and catalytic properties of Pt black after O2-H2 cycles

“…Possible C-derived orbitals (if any) cannot be identified, partly due to their weak cross sections in He I and their overlap with OH, partly due to the three-dimensional character of the carbonaceous overlayer [6] which shields the Pt-C bands from detection. Very weak carbon signals were reported for a residual carbonaceous overlayer after annealing adsorbed aromatic adlayers [18]. Individual UP spectral features have their counterparts in the O ls XP spectral region (compare figs.…”