化学反应工程与工艺
化學反應工程與工藝
화학반응공정여공예
CHEMICAL REACTION ENGINEERING AND TECHNOLOGY
2014年
2期
163-168
,共6页
FI催化剂%活性聚合%聚烯烃
FI催化劑%活性聚閤%聚烯烴
FI최화제%활성취합%취희경
FI catalyst%living polymerization%polyolefin
采用以配体为中心的催化剂设计理念，设计并合成了一种新型 Ti 系 FI 催化剂双[N-(3-叔丁基水杨醛)-2,6-二氟苯胺-4-苯乙烯基苯胺]二氯化钛(IV)(2F-BSFI)。采用核磁氢谱（1H-NMR）、核磁碳谱（13C-NMR）和傅里叶红外（FTIR）对催化剂配体N-(3-叔丁基水杨醛)-2,6-二氟苯胺-4-苯乙烯基苯胺(2F-BS)进行了表征。用1H-NMR、13C-NMR、元素分析（EA）和电喷雾电离质谱（ESI-MS）表征了催化剂结构。以2F-BSFI 和助催化剂甲基铝氧烷（2F-BSFI/d-MAO）为催化体系催化乙烯聚合，考察了聚合时间、温度、助催化剂用量对催化性能的影响。结果表明，随着聚合时间的增加，产物分子量分布指数（PDI）稳定在较低水平，产物数均分子量Mn几乎呈线性增长，说明该催化剂催化乙烯聚合具有拟活性聚合特征。
採用以配體為中心的催化劑設計理唸，設計併閤成瞭一種新型 Ti 繫 FI 催化劑雙[N-(3-叔丁基水楊醛)-2,6-二氟苯胺-4-苯乙烯基苯胺]二氯化鈦(IV)(2F-BSFI)。採用覈磁氫譜（1H-NMR）、覈磁碳譜（13C-NMR）和傅裏葉紅外（FTIR）對催化劑配體N-(3-叔丁基水楊醛)-2,6-二氟苯胺-4-苯乙烯基苯胺(2F-BS)進行瞭錶徵。用1H-NMR、13C-NMR、元素分析（EA）和電噴霧電離質譜（ESI-MS）錶徵瞭催化劑結構。以2F-BSFI 和助催化劑甲基鋁氧烷（2F-BSFI/d-MAO）為催化體繫催化乙烯聚閤，攷察瞭聚閤時間、溫度、助催化劑用量對催化性能的影響。結果錶明，隨著聚閤時間的增加，產物分子量分佈指數（PDI）穩定在較低水平，產物數均分子量Mn幾乎呈線性增長，說明該催化劑催化乙烯聚閤具有擬活性聚閤特徵。
채용이배체위중심적최화제설계이념，설계병합성료일충신형 Ti 계 FI 최화제쌍[N-(3-숙정기수양철)-2,6-이불분알-4-분을희기분알]이록화태(IV)(2F-BSFI)。채용핵자경보（1H-NMR）、핵자탄보（13C-NMR）화부리협홍외（FTIR）대최화제배체N-(3-숙정기수양철)-2,6-이불분알-4-분을희기분알(2F-BS)진행료표정。용1H-NMR、13C-NMR、원소분석（EA）화전분무전리질보（ESI-MS）표정료최화제결구。이2F-BSFI 화조최화제갑기려양완（2F-BSFI/d-MAO）위최화체계최화을희취합，고찰료취합시간、온도、조최화제용량대최화성능적영향。결과표명，수착취합시간적증가，산물분자량분포지수（PDI）은정재교저수평，산물수균분자량Mn궤호정선성증장，설명해최화제최화을희취합구유의활성취합특정。
Based on the ligand design-oriented research idea, a new FI-Ti complex bis[N-(3-tert-butyl salicylidene)-2,6-difluoro-4-styrylanilinato]titanium (IV) dichloride(2F-BSFI) was designed and synthesized as catalyst for living polymerization of ethylene. The ligand N-(3-tert-butyl salicylidene)-2,6-difluoro-4-styrylaniline(2F-BS) was characterized by 1H Nuclear Magnetic Resonance (1H-NMR), 13C-NMR and Fourier Transform Infrared Spectroscopy (FTIR). 2F-BSFI was characterized by 1H-NMR, 13C-NMR, Elemental Analysis (EA) and Electrospray Ionization Mass Spectrometry (ESI-MS). The effects of temperature, time and amount of cocatalyst on the polymerization behavior of 2F-BSFI/d-MAO was studied. With the increase of polymerization time, the product polydispersity index (PDI) stabilized at a low level and Number Average Molecular Weight (Mn) of the product almost kept a liner growth, indicating that the catalyst has a“living”polymerization characteristic in ethylene polymerization.
