新型Ti系FI催化剂的合成及其催化乙烯“活性”聚合的研究  

Synthesis of a New FI-Ti Catalyst and Its "Living" Polymerization

在线阅读下载全文

作  者:梁娇娇[1] 王轶[1] 范宏[1] 

机构地区:[1]浙江大学化学工程联合国家重点实验室,杭州310027

出  处:《化学反应工程与工艺》2014年第2期163-168,共6页Chemical Reaction Engineering and Technology

基  金:高等学校博士学科点专项科研基金资助项目(20100101110041)

摘  要: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。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.

关 键 词:FI催化剂 活性聚合 聚烯烃 

分 类 号:TQ032[化学工程]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象