イオン交換膜拡散透析法および電気透析法におけるメタンスルホン酸ならびにメタンスルホン酸スズの膜透過特性

抄録

Membrane permeation characteristics of methanesulfonic acid and tin methanesulfonate were examined in diffusion dialysis and electrodialysis with ion-exchange membranes. In the diffusion dialysis experiments, the methanesulfonic acid permeated through an anion-exchange membrane, but did not permeated through a cation-exchange membrane. The apparent diffusivities of methanesulfonic acid through the anion-exchange membrane were determined with the flux of methanesulfonic acid and the concentration difference between the compartments. The values were the same order of hydrochloric acid permeation in the anion-exchange membrane. In the experiment of electrodialysis for tin methanesulfonate solution, methanesulfonic acid moved to the anode-side strip compartment through the anion-exchange membrane, but tin ion moved to the cathode-side strip compartment through the cation-exchange membrane. These fluxes were almost proportional to the current density, and the flux of tin ion agreed with the theoretical value corresponding to that di-charged ion permeates at the transport number equal to unity.