Heats of displacement of hydrogen from palladium by noble gases |
| |
Authors: | Aleksander J. Groszek Erwin Lalik |
| |
Affiliation: | a Institute of Catalysis and Surface Chemistry of Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Krakow, Poland b Microscal Limited, 79 Southern Row, London W10 5AL, UK |
| |
Abstract: | It has been observed that noble gases, such as helium, neon and argon produce heat evolution when contacted with Pd powder partially saturated with hydrogen. These phenomena have been studied with flow-through adsorption microcalorimetry. The observed exothermic effects are comparable to those usually associated with the heat of sorption of hydrogen in palladium. It is suggested that the noble gases displace the adsorbed H species from the surface of Pd, causing their reabsorption in the Pd lattice with the exothermic heat of PdH bonds formation, or the formation of H2, both heat evolutions being observed with a flow-through microcalorimeter. |
| |
Keywords: | Palladium Palladium hydride Noble gases Heat of sorption Flow microcalorimetry |
本文献已被 ScienceDirect 等数据库收录! |
|