ADSORPTION BEHAVIOR OF 2,2,6,6-TETRAMETHYL-4-OXYPIPERIDINE ON A MERCURY-ELECTRODE IN THE ABSENCE AND PRESENCE OF ANIONS OF AMINOACETIC ACID

The adsorption behavior of 2,2,6,6-tetramethyl-4-oxypiperidine is stud ied on mercury in alkaline solutions of sodium tripolyphosphate in the absence and presence of a constant amount of aminoacetic acid. A depe ndence of the adsorption energy of the studied substance on the electr ode potential is calculated from experimental isotherms of two-dimensi onal pressure. On the basis of this dependence, it is concluded that t wo adsorption states are realized at the adsorption of this substance on a mercury surface. It is shown that the surface activity of 2,2,6,6 -tetramethyl-4-oxypiperidine decreases in the presence of aminoacetic acid. The adsorption parameters are calculated.