“…According to various authors, the reaction is represented by two different mechanisms: 20) In mechanism A, the protonated OH group is in electrostatic interaction with the X − anion [16a, 19,[100][101][102], whereas in mechanism B [9, 13, 14b, 97, 103], the X − anion replaces the OH − group in the coordination sphere of the surface aluminum. According to various authors, the reaction is represented by two different mechanisms: 20) In mechanism A, the protonated OH group is in electrostatic interaction with the X − anion [16a, 19,[100][101][102], whereas in mechanism B [9, 13, 14b, 97, 103], the X − anion replaces the OH − group in the coordination sphere of the surface aluminum.…”