MODIFIED PREFORMATION METHOD FOR CATALYST ACTIVATION IN ETHYLENE REACTIONS

摘要

Systems and methods for catalyst activation in ethylene reactions are described. Systems and methods include pre-mixing at least one ligand (pref. a PNPN-H ligand) and at least one chromium source in at least one solvent to form a pre-mixed composition; activating the pre- mixed composition with an activator (pref. triethylaluminum) to form an activated composition; and supplying the preactivated composition to a reactor.