TY - JOUR
T1 - Adsorption of neopentane on tungsten and palladium films
AU - Ross, J. R.H.
AU - Roberts, M. W.
AU - Kemball, C.
PY - 1972
Y1 - 1972
N2 - The adsorption of neopentane has been studied on tungsten and on palladium films; allied experiments were carried out with methane (W, Pd) and with propane (W). The evolution of hydrogen from each gas/metal system was studied as a function of time and temperature; reaction with gas phase deuterium was used to determine how many of the hydrogen atoms in the surface phase were exchangeable, either rapidly or by slower processes. Rapid dissociative chemisorption, involving the cleavage of an average of 3 or 4 C-H bonds occurred with neopentane or propane on tungsten. Neopentane was chemisorbed on palladium at room temperature but dissociation of methane was not observed below ∼373 K; the extent of the dissociation of both hydrocarbons was smaller than on tungsten. Further breakdown of the surface species, accompanied by evolution of hydrogen, occurred with all systems on raising the temperature. Evidence for C-C bond rupture was obtained from the hydrogenolysis of neopentane at higher temperatures.
AB - The adsorption of neopentane has been studied on tungsten and on palladium films; allied experiments were carried out with methane (W, Pd) and with propane (W). The evolution of hydrogen from each gas/metal system was studied as a function of time and temperature; reaction with gas phase deuterium was used to determine how many of the hydrogen atoms in the surface phase were exchangeable, either rapidly or by slower processes. Rapid dissociative chemisorption, involving the cleavage of an average of 3 or 4 C-H bonds occurred with neopentane or propane on tungsten. Neopentane was chemisorbed on palladium at room temperature but dissociation of methane was not observed below ∼373 K; the extent of the dissociation of both hydrocarbons was smaller than on tungsten. Further breakdown of the surface species, accompanied by evolution of hydrogen, occurred with all systems on raising the temperature. Evidence for C-C bond rupture was obtained from the hydrogenolysis of neopentane at higher temperatures.
UR - http://www.scopus.com/inward/record.url?scp=37049129222&partnerID=8YFLogxK
U2 - 10.1039/F19726800914
DO - 10.1039/F19726800914
M3 - Article
AN - SCOPUS:37049129222
SN - 0300-9599
VL - 68
SP - 914
EP - 924
JO - Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
JF - Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
ER -