Collect. Czech. Chem. Commun. 1998, 63, 1994-2000

Catalytic Activity of 4-Hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl in Homogeneous Electrooxidation of Hydroxylamine

He Xia and Hu Lin Li

Department of Chemistry, Lanzhou University, Lanzhou 730000, People Republic of China


4-Hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (1) shows catalytic electroactivity in homogeneous oxidation of hydroxylamine on a glassy carbon electrode. Kinetic parameters of the electrode reaction were measured and an catalytic reaction mechanism for the electrooxidation was proposed. Possible application of electrocatalytic activity of 1 in determination hydroxylamine was also discussed.

Keywords: Catalytic electrooxidation; Hydroxylamine; 4-Hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl; Electrochemistry; Cyclic voltammetry.