Table 3.

Reactions at room temperature (21 °C), for 1h in a batch electrolysis H-Cell divided by a coarse ceramic frit at controlled potential against a single-junction Ag/AgCl reference electrode with 20 mg PET plastic.

Reaction Entry	Conditions	Terephthalic Acid Yield% a	nCO2 * 10−6 b
1	50% MeOH in water, −2.2 V	16.9	7.89 ± 0.36
2	Water, 0.1 M NaCl, −2.2 V	0.51	n/a c

^a Yield of terephthalic acid obtained after the acidic workup of the cell contents. ^b Amount of CO₂ produced in the anode was calculated from the quantitation of a CO₂ sample from the anode headspace by GC-TCD (thermal conductivity detection) on a PLOT 1010 column quantified against standards. ^c CO₂ signal present, but below quantitation limit.