CAJ | 학술논문

合成了一种具有超支化结构的新型水杨醛亚胺配体及其 Ni(Ⅱ)配合物，利用元素分析、电喷雾电离质谱(ESI-MS)、傅里叶变换红外光谱(FTIR)、紫外-可见光谱(UV-Vis)、氢核磁共振谱(1 H NMR)和碳核磁共振谱(13 C NMR)对其结构进行了表征.以甲基铝氧烷(MAO)为助催化剂，考察了超支化水杨醛亚胺镍配合物对乙烯齐聚反应的催化活性及聚合条件(Al/ Ni 摩尔比、聚合温度)对催化剂活性及聚合产物分布的影响.结果表明，在反应温度为25℃、 Al/ Ni 摩尔比为500时，该催化剂的活性最高达到5.59×105 g/(mol Ni·h)，得到的聚合产物为全馏分烯烃，其中高碳烯烃 C10~ C18的含量最高达91%.
합성료일충구유초지화결구적신형수양철아알배체급기 Ni(Ⅱ)배합물，이용원소분석、전분무전리질보(ESI-MS)、부리협변환홍외광보(FTIR)、자외-가견광보(UV-Vis)、경핵자공진보(1 H NMR)화탄핵자공진보(13 C NMR)대기결구진행료표정.이갑기려양완(MAO)위조최화제，고찰료초지화수양철아알얼배합물대을희제취반응적최화활성급취합조건(Al/ Ni 마이비、취합온도)대최화제활성급취합산물분포적영향.결과표명，재반응온도위25℃、 Al/ Ni 마이비위500시，해최화제적활성최고체도5.59×105 g/(mol Ni·h)，득도적취합산물위전류분희경，기중고탄희경 C10~ C18적함량최고체91%.
A novel hyperbranched salicylaldehyde-imine nickel complex was prepared and characterized via elemental analysis, electrospray ionization-mass spectrometry(ESI-MS), Fourier transform infrared spectrome-try(FTIR), UV-Vis spectrometry(UV-Vis), 1 H nuclear magnetic resonance( 1 H NMR) and 13 C nuclear mag-netic resonance( 13 C NMR) spectrometry. This hyperbranched complex was evaluated as catalyst precursor in the oligomerization of ethylene, using methylaluminoxane(MAO) as an activator. The effects of the Al/ Ni mo-lar ratio and polymerization temperature on the catalyst activity and product distribution were investigated. The results show that the catalyst possesses a middle catalytic activity of 5. 59×105 g / (mol Ni·h) with a selectivi-ty for higher olefins(C10-C18 ) of 91% .