Chemistry Reference
In-Depth Information
Table 6.6
Electroreduction of
p
-methylbenzaldehyde, dimethyl maleate and
benzoic acid
Starting compound Stirring
mode
Current
efficiency
for [D1]
+ [M1],
[D2] +
[M2] or
[M3] +
[M4]/%
Selectivity
[D1]/
[M1],
[D2]/
[M2] or
[M3]/
[M4]
p
-methylbenzaldehyde
a
Still 35 0.0
p
-methylbenzaldehyde
a
Mechanical
b
74 1.0
p
-methylbenzaldehyde
a
Ultrasonic
c
89 24
Dimethyl maleate
d
Still 66 0.0
Dimethyl maleate
d
Mechanical
b
93 0.3
Dimethyl maleate
d
Ultrasonic
c
96 0.4
Benzoic acid
e
Still 1 0.0
Benzoic acid
e
Mechanical
b
17 0.2
Benzoic acid
e
Ultrasonic
c
54 1.5
a
Electrolyzed by passing 0.5 F mol
−1
at 20 mA cm
−2
on a lead
cathode in a 0.25 M H
2
SO
4
/50% MeOH solution.
b
Stirred by a rotating magnet bar.
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