J. Stpierre et Aa. Wragg, BEHAVIOR OF ELECTROGENERATED HYDROGEN AND OXYGEN BUBBLES IN NARROW-GAP CELLS .2. APPLICATION IN CHLORINE PRODUCTION, Electrochimica acta, 38(13), 1993, pp. 1705-1710
A comparison is made between H-2 and O2 evolution inside a thin channe
l cell and Cl2 evolution inside an industrial membrane cell. Since the
appearance of bridging bubbles is linked to the behaviour of free bub
bles and that similar conditions of gas evolution exist (gas flow rate
and free bubble escape behaviour), it is concluded that bridging bubb
les are expected to form on the anode side inside industrial chlor/alk
ali cells. This phenomenon may also occur on the cathode side of the c
ell depending on the distance between the membrane and the electrode.
Solutions to the problems caused by these particular bubbles are discu
ssed which include correct selection of the electrode geometry, membra
ne positioning and cell design.