Identification of reaction intermediates and products in the dehalogenation of trichloroethene on Cu(110)

Pd/Cu alloys as hydrodechlorination catalysts: a medium-energy ion scattering study of surface composition under exposure to chlorinated hydrocarbons

“…In other work, 1,2-trans-dichloroethene has been shown to give much higher levels of Cu segregation 9 and if the surface chemistry resembles that of Cu(110) this may be explained by the fact that the majority of hydrocarbon species are eliminated from the surface in the form of benzene. 15 This work has demonstrated clearly the ability of the PdCu alloy surface to respond dynamically to the adsorption of chlorohydrocarbons. Surface segregation of one or other species allows adsorption sites to be provided for all the decomposition products.…”

Origins of the poisoning effect of chlorine on the CO hydrogenation activity of alumina-supported cobalt monitored by operando FT-IR spectroscopy

“…Cl was added into the reaction feed in the form of trichloroethylene (TCE). This molecule was selected because it is expected to readily adsorb, decompose and deliver the Cl at the surface of metallic cobalt, similar to the case of supported metal catalysts [14][15][16][17] used for gas-phase hydrodechlorination of chlorinated ethylene, while it is less toxic and corrosive than HCl and Cl 2 . DRIFTS enables monitoring the state of the cobalt surface, which is typically covered with various carbonyl species under reaction conditions [18][19][20].…”

Spectroelectrochemical study of perchloroethylene reduction at copper electrodes in neutral aqueous medium

“…On one hand, the metal-catalyzed degradation of chlorinated ethylenes by interaction of these compounds with metal surfaces is of great interest, but only a limited amount of work on metal surfaces such as Ag , Cu, Pd, and Pt has been reported [20][21][22][23][24]. On the other hand, electrochemical approaches are also being investigated.…”

“…Figure 4 shows a set of spectra acquired at different potentials obtained by adding 2 Cu(100) [22] and Cu(110) [21,29], and the dominant product in all cases is acetylene.…”

“…It is reported in the literature that dechlorination of chloroethylenes on Cu(110) [21,29,32] produces mainly acetylene. Yang et al [22] in their study of the chemistry of chloroethylenes on Cu(100) found that TCE dissociation generates acetylene and deposits a carbon residue on the surface.…”