CAJ | 학술논문

合成2种具有新型结构的苊二亚胺Ni催化剂[ArN=C（Nap）-C（Nap）=NAr]NiBr2（Ar=2，6-（i-Pr）2-phenyl， Nap=5-R-1，8-naphthdiyl；其中，Cat.A中R=H；Cat.B中R=OCH3），通过核磁氢谱分析（1H-NMR）及元素分析对其进行表征.同时，该催化剂也被用于乙烯聚合反应中，考察聚合体系的温度、铝镍比以及苊碳骨架上的取代基团对乙烯聚合反应活性的影响.研究结果表明：苊碳骨架上引入供电子取代基后催化剂的催化活性明显提高；当铝镍摩尔比为1500时，2种新型Ni（II）催化剂的催化活性最高，氢取代的催化剂（Cat.A）在聚合温度为30℃时对乙烯的催化活性为371 kg/（mol·h），而甲氧基取代的催化剂（Cat.B）在10℃下对乙烯聚合的催化活性达到了446 kg/（mol·h）.
합성2충구유신형결구적액이아알Ni최화제[ArN=C（Nap）-C（Nap）=NAr]NiBr2（Ar=2，6-（i-Pr）2-phenyl， Nap=5-R-1，8-naphthdiyl；기중，Cat.A중R=H；Cat.B중R=OCH3），통과핵자경보분석（1H-NMR）급원소분석대기진행표정.동시，해최화제야피용우을희취합반응중，고찰취합체계적온도、려얼비이급액탄골가상적취대기단대을희취합반응활성적영향.연구결과표명：액탄골가상인입공전자취대기후최화제적최화활성명현제고；당려얼마이비위1500시，2충신형Ni（II）최화제적최화활성최고，경취대적최화제（Cat.A）재취합온도위30℃시대을희적최화활성위371 kg/（mol·h），이갑양기취대적최화제（Cat.B）재10℃하대을희취합적최화활성체도료446 kg/（mol·h）.
Twoα-diimine nickel complexes [Ar-N=C(Nap)-C(Nap)=N-Ar] NiBr2 with new structures [Ar=Ar=2,6-(i-Pr)2-phenyl, Nap=5-R-1,8-naphthdiyl; Cat.A R=H; Cat.B=OCH3] were synthesized successfully and characterized by the 1H-NMR analysis and elemental analysis. They were used to catalyse ethylene polymerization. The influences resulting from the changes of polymerization temperatures, the mole ratio of Al/Ni and the alkyl substituents on backbone carbon of acenaphthene on the ethylene polymerization activities were investigated. The results showed that polymerization activities were improved significantly because of the introduction of electron donating substituent on backbone carbon of acenaphthene. Especially, the catalytic system had the highest activity when Al/Ni equalled 1 500. The ethylene polymerization activities with Cat.A reached 371 kg/(mol·h) under the condition 30℃and those reached 446 kg/(mol·h) under 10℃with Cat.B.