XIX. On the occlusion of oxygen and hydrogen by platinum black. - Part I

Abstract

The word “ occlusion ” was first used by Graham, to signify the absorption of, or shutting up, of gases in solid substances. Many porous bodies, such as charcoal, possess this property, and it is also to be met with among the metals, pre-eminently among the metals belonging to the eighth group of the Periodic Table, and especially among the platinum metals. Platinum in the coherent state, and also in the state of sponge, has been very fully investigated by Graham, in his classical researches. A large number of observations on platinum black are also on record, but these, for the most part, have been made with impure material, and the results are often contradictory.