Direct Measurements of Proton Mobilities in Protonated Ice

Abstract

PROTON mobilities in ice have been calculated previously only on the basis of indirect experimental evidence. Eigen and DeMayer^1,2 have estimated from discharge experiments that in ice of pure water proton mobility is in the range 0.1–0.5 cm.² sec.⁻¹ V.⁻¹. Conway and Bockris³ calculated from conductivities of ice of pure water that proton mobility is 0.19 cm.² sec.⁻¹ V.⁻¹. Some theoretical estimations⁴ yield proton mobilities in ice of 0.11 cm.² sec.⁻¹ V.⁻¹. These mobilities are all extremely high when compared with the mobilities of protons in liquid water (3 × 10⁻³ : cm.⁻² sec.⁻¹ V.⁻¹).