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Ionic liquid-coordinated ferrous acetate complex immobilized on bentonite ([BmimFe]­[(OAc)3]/bentonite) was prepared by impregnation of [BmimFe]­[(OAc)3] on bentonite. The prepared catalyst was characterized using FTIR, XRD and total carbon (TC). The catalyst showed a high catalytic activity in the glycolysis of polyethylene terephthalate (PET) under mild condition. Maximum activity was observed with a PET conversion of 100% and bis­(2-hydroxyethyl)­terephthalate (BHET) yield of 44% under the optimum conditions of catalyst (1.0 g), ethylene glycol (20 g) and PET (3.0 g) at 190 °C for 3 h. The activation energy of PET glycolysis using the prepared catalyst was calculated and found to be 51.6 kJ/mol.