Fig. 4: Polymer morphology and large-scale polymerization.

a SEM image of polyethylene samples prepared from Ni-Na-SiO2. b, c Polyethylene samples prepared from Ni-Na-SiO2. d 2.5 L polymerization reactor. e SEM image of polyethylene samples prepared from Ni. f, g Polyethylene samples prepared from Ni. h-1 Polyethylene prepared in a 2.5 L polymerization reactor. h-2 Polyethylene prepared in a 10 mL polymerization reactor.