Table 1: The catalytic effect of [Bmim]ZnCl3 under different temperaturesa.

EntryTemperature (°C)Conversion (%)Yield (%)

118097.983.3
217575.558.9
317050.639.4
416530.623.1
516021.514.5

Reaction conditions: PET 2 g; [Bmim]ZnCl3 1 wt%; reaction time 5 h.