spent five more years at Oxford, undertaking postgraduate research at the Clarendon with Sir Alfred Egerton, FRS. They published together on the occlusion of hydrogen by palladium. and the oxidation of hydrocarbons.

During his time at Oxford, Ubbelohde spent a year (1931-32) in the laboratory of Professor Arnold Eucken at the Institut für physikalische Chemie, Göttingen. During this time with he spent