Application of Cationic CNC and Nafion Membrane in the Electrolysis of Salt Solution

초록

In the electrolysis of salt for the production of caustic soda, a semipermeable diaphragm membrane was used to separate the anode and catode compartments. with diaphragm cells, back migration of ions can be occurred, and is controlled by the rate of flow of fluid through the diaphragm. As well, that is also regulated by careful control of liquid levels. recently cationic non-porous polymer membrane is frequently used instead of diaphragm cell. the main purpose of polymer membrane such as nafion is to exclude OH- and Cl- ions from the anode chamber. In this work, we applied the composite cationic membrane(sulfonated acid type cnc/nafion) in the electrolysis of salt solution. various membrane materials were prepared and tested to obtain the caustic solution.