The yield of benzaldehyde obtained by using the modified anode containing immobilized hydroquinone was better/worse than that obtained with a Pt anode without/with hydroquinone in solution, repectively.

• 由苯二酚固定于白金之电极所得苯甲醛之产率分别白金电极无/有苯二酚存在于溶液中之产率为高/低。