Chemistry Reference
In-Depth Information
Figure 3.2
Undivided cell for anhydrous
electrolysis
When a species reduced at a cathode is oxidized
at an anode, and vice versa, a two-compartment
cell, namely a divided cell with a diaphragm
(sintered glass or an ion-exchange membrane),
should be used to prevent mixing of the anodic
and cathodic solutions. An H-type cell divided
with a sintered glass diaphragm (pore size φ =
5-10 μm) is convenient, as shown in
Figure 3.3
.
A suitable volume for each compartment is
10-200 cm
3
, and the diameter of the
diaphragm should be as large as possible to
decrease the cell resistance. When starting
substrate and/or products migrate to a
counter-compartment through a sintered glass
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