中文摘要：

乙醇与氯化镁按摩尔比为20：1的比例混合，升温至120℃溶解形成氯化镁醇溶液后，将氯化镁醇溶液冷却至70℃转移至处于搅拌状态的冷却液中，经过滤、正己烷洗涤、干燥后得到球形氯化镁-乙醇络合物纳米颗粒．经TEM表征颗粒粒径在30-100nm之间．这种氯化镁-乙醇络合物纳米颗粒可在室温自组装，形成纳米线．WAXD结果表明，制备的球形氯化镁-乙醇络合物纳米颗粒的结晶行为受到影响，与纯氯化镁相比，氯化镁-乙醇络合物纳米颗粒的结晶度低．这种氯化镁-乙醇络合物纳米颗粒可作为Ziegler-Natta催化剂的载体材料，制备的催化剂可高效催化乙烯聚合，合成聚乙烯微纳米颗粒．

英文摘要：

After MgC12 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 MgC12-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 MgC12-CH3CH2OH could become nano wires by self-assembly technology at room temperature. WAXD results showed that the crystallinity of the obtained nano-sized MgC12- CH3CH2OH particles became poor,just a broad and weak signal at 2θ = 32° - 35° was observed,while MgC12 showed four sharp signals at 20 = 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 μm in diameter,respectively.