{"title":"以 IITP 为电子给体的铁基催化剂在丁二烯聚合反应中的催化行为研究","authors":"","doi":"10.1007/s10118-024-3078-8","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>In this study, a novel iron-based catalyst system, Fe(acac)<sub>3</sub>/(isocyanoimino) triptenylphosphorane (IITP)/AlR<sub>3</sub>, 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<sub>polymer</sub>·mol<sub>catalyst</sub><sup>−1</sup>·h<sup>−1</sup> 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 − <em>c</em>) 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%(<em>rrrr</em>). Additionally, through kinetic studies on polymerization reaction, an apparent activation energy <em>E</em><sub>a</sub> value of this catalytic system was calculated to be 84.98 kJ·mol<sup>−1</sup>, which suggests that high polymerization temperature favors efficient polymerization.</p>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene\",\"authors\":\"\",\"doi\":\"10.1007/s10118-024-3078-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Abstract</h3> <p>In this study, a novel iron-based catalyst system, Fe(acac)<sub>3</sub>/(isocyanoimino) triptenylphosphorane (IITP)/AlR<sub>3</sub>, 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<sub>polymer</sub>·mol<sub>catalyst</sub><sup>−1</sup>·h<sup>−1</sup> 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 − <em>c</em>) 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%(<em>rrrr</em>). Additionally, through kinetic studies on polymerization reaction, an apparent activation energy <em>E</em><sub>a</sub> value of this catalytic system was calculated to be 84.98 kJ·mol<sup>−1</sup>, which suggests that high polymerization temperature favors efficient polymerization.</p>\",\"PeriodicalId\":517,\"journal\":{\"name\":\"Chinese Journal of Polymer Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-01-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chinese Journal of Polymer Science\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s10118-024-3078-8\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s10118-024-3078-8","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
Study on Catalytic Behavior of Iron-based Catalyst with IITP as Electron Donor in the Polymerization of Butadiene
Abstract
In this study, a novel iron-based catalyst system, Fe(acac)3/(isocyanoimino) triptenylphosphorane (IITP)/AlR3, 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 kgpolymer·molcatalyst−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 − c) 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 Ea value of this catalytic system was calculated to be 84.98 kJ·mol−1, which suggests that high polymerization temperature favors efficient polymerization.
期刊介绍:
Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985.
CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.