After MgCl2 was dissolved in ethanol with the ratio of 1:20 in mole at 120℃

the solution was cooled to 70℃ and transferred to the cooling liquid consisting of n-hexane (30 mL) and wax (0.3 g) at 0℃.Precipitate was produced.Filtrated and washed with n-hexane

the residue was dried by vacuum at 50℃

and MgCl2-CH3CH2OH particles were obtained.The size of the particles determined by TEM was at the range from 30 nm to 100 nm.The nano-sized particles of MgCl2-CH3CH2OH could become nano wires by self-assembly technology at room temperature.WAXD results showed that the crystallinity of the obtained nano-sized MgCl2-CH3CH2OH particles became poor

just a broad and weak signal at 2=32~35 was observed

while MgCl2 showed four sharp signals at 2=15

30

35 and 50.The obtained particles were useful as support for preparing nano-sized Ziegler-Natta catalysts.It was confirmed that the prepared catalysts may efficiently polymerize ethylene to form polymer particles with 200~300 nm or 2~4 m in diameter

respectively.