Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene

Shi-Liang Xu; Ying-Nan Zhao; Yao Yu; Qi Yang; Li-Hua Na; Heng Liu; Chun-Yu Zhang; Xue-Quan Zhang

doi:10.1007/s10118-024-3078-8

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Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene

RESEARCH ARTICLE | Updated：2024-04-12

- Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene
- Chinese Journal of Polymer Science Vol. 42, Issue 5, Pages: 612-619(2024)
- Affiliations：
  
  a.Key Laboratory of Advanced Rubber Material, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
  b.Shandong Provincial College Laboratory of Rubber Material and Engineering, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
  c.Key Lab of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber-plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
- Author bio：
  
  lhna@qust.edu.cn (L.H.N.)
  cyzhang@qust.edu.cn (C.Y.Z.)
- Funds：
- DOI：10.1007/s10118-024-3078-8
  CLC：
- Published：1 May 2024，
  
  Published Online：26 January 2024，
  
  Received：24 October 2023，
  
  Revised：24 November 2023，
  
  Accepted：6 December 2023
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Xu, S. L.; Zhao, Y. N.; Yu, Y.; Yang, Q.; Na, L. H.; Liu, H.; Zhang, C. Y.; Zhang, X. Q. Study on catalytic behavior of iron-based catalyst with IITP as electron donor in the polymerization of butadiene. Chinese J. Polym. Sci. 2024, 42, 612–619

Shi-Liang Xu, Ying-Nan Zhao, Yao Yu, et al. Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene. [J]. Chinese Journal of Polymer Science 42(5):612-619(2024)
Xu, S. L.; Zhao, Y. N.; Yu, Y.; Yang, Q.; Na, L. H.; Liu, H.; Zhang, C. Y.; Zhang, X. Q. Study on catalytic behavior of iron-based catalyst with IITP as electron donor in the polymerization of butadiene. Chinese J. Polym. Sci. 2024, 42, 612–619 DOI： 10.1007/s10118-024-3078-8.

Shi-Liang Xu, Ying-Nan Zhao, Yao Yu, et al. Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene. [J]. Chinese Journal of Polymer Science 42(5):612-619(2024) DOI： 10.1007/s10118-024-3078-8.

摘要

By employing electron donor compounds as an innovative approach

the synthesis of low melting point syndiotactic 1

2-polybutadiene was successfully achieved utilizing an iron-based catalyst. This catalytic system exhibits remarkable advantages in terms of high activity and thermal stability

while simultaneously demonstrating the characteristics of a controlled/living polymerization process.

Abstract

In this study

a novel iron-based catalyst system

Fe(acac)

/(isocyanoimino) triptenylphosphorane (IITP)/AlR

was employed for the synthesis of syndiotactic 1

2-polybutadiene in hexane. This catalyst system exhibits remarkably high catalytic activity

achieving a polymerization activity of 762 kg

polymer

·mol

catalyst

−1

·h

−1

at 50 °C with a [BD]/[Fe]

molar ratio of 20000. Furthermore

living polymerization characteristic were observed during the investigation of the polymerization kinetics of 1

3-butadiene polymerization. These characteristics were well demonstrated by a narrow molecular weight distribution (PDI≈2.0) of the resulting polybutadiene and a linear relationship between −ln(1 −

) and polymerization time as well as number average molecular weight and polymer yield. The resultant polymer showed a 1

2-selectivity of approximately 76% and stereoregularity ranging from 62% to 73%(

rrrr

). Additionally

through kinetic studies on polymerization reaction

an apparent activation energy

value of this catalytic system was calculated to be 84.98 kJ·mol

−1

which suggests that high polymerization temperature favors efficient polymerization.

关键词

Keywords

Iron catalystSyndiotactic 12-polybutadieneElastomersDonorSelectivity

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