Адсорбция и пассивация меди замещенными триазолами в нейтральных растворах

В нейтральных буферных растворах на меди изучено адсорбционное и пассивирующее действие замещенных 3-амино-1,2,4-триазолов (3-R-3-АТ), содержащих электронодонорные или электроноакцепторные заместители. Соединения с электроноакцепторными заместителями R=C₆H₅- и C₃H₇SO₂- обладают большей адсорбционной активностью, чем аналогичные соединения с электронодонорными R. Изотермы адсорбции C₆H₅-3-AT и 5-C₃H₇SO₂-3-AT на окисленной поверхности меди в боратном буферном растворе при постоянном потенциале Е=0,0 В (н.в.э.) описываются полным уравнением Тёмкина с величинами свободной энергии адсорбции  (ΔG_a,max⁰ )=93 и 96 кДж/моль, соответственно. Минимальная концентрация, подавляющая на меди первый пик активного растворения, у замещенных 3-R-3-АТ ниже, чем у самого 3-АТ.

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