Enthalpy and activation-energy for the sublimation of solids involving proton-transfer process

High-Energy Solid Group, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India.

Abstract

Empirical relationship between the activation-energy (E) (or the sublimation process and the enthalpy (∆Hs) of sublimation has ben obtained for various solids involving protontransfer process during sublimation. The empirical relationship shows that E is approximately a third of ∆H_s. From kinetic treatments it has been suggested that diffusion plays a significant role during the sublimation process.

Résumé

Établissement d’une relation empirique entre l’énergie d'activation E de la sublimation et son enthalpie (∆Hs) pourdivers solides subissant des transferts de protons pendant la sublimation. On constate que E est environ le tiers de ∆H_s. Le traitement cinétique suggère un rôle important de la diffusion dans le processus de sublimation.