| 王继成,张红星,高艳,王霞,黄安平,曾会应,王为.化学通报,2026,89(3):329-334. |
| 四醚类Ziegler-Natta催化剂内给电子体的合成与应用 |
| Synthesis and Application of Tetraether Compounds as Internal Donors in Ziegler-Natta Catalysts |
| 投稿时间：2025-11-13 修订日期：2025-12-16 |
| DOI： |
| 中文关键词: 内给电子体 Ziegler-Natta催化剂 丙烯聚合 |
| 英文关键词:internal electron donor ziegler-natta catalyst propylene polymerization |
| 基金项目:甘肃省科技计划“2022年甘肃省化工新材料创新联合体项目”(22ZD6GA013) |
|
| 摘要点击次数: 292 |
| 全文下载次数: 78 |
| 中文摘要: |
| 以四溴新戊烷与长链醇为原料,采用Williamson醚化反应并以氢化钠为碱,合成了4种四醚化合物。并通过1H NMR对产物进行结构表征,证实了目标分子的结构。再以所制备的四醚类化合物为内给电子体、合成MgCl2负载的Ziegler-Natta 催化剂,配合三乙基铝助催化剂和氢气链转移剂进行了丙烯聚合评价。结果显示,四醚类内给电子体可赋予催化剂较高活性与稳定的分子量分布,其中9,9-双((2-丙氧基乙氧基)甲基)-4,7,11,14-四氧十七烷为内给电子体时,聚合活性最高,达到41.20 kgPP/gCat。研究表明,四醚类内给电子体具有结构简单、制备便捷、成本较低和毒性较小等优势,具备进一步应用与推广的潜力。 |
| 英文摘要: |
| Four tetraether compounds were synthesized via the Williamson reaction using tetrabromoneopentane and long-chain alcohols with sodium hydride as base, and were characterized by 1H NMR. When employed as internal electron donors in MgCl?-supported Ziegler–Natta catalysts for propylene polymerization in the presence of triethylaluminum and hydrogen, the tetraether 9,9-bis((2-propoxyethoxy)methyl)-4,7,11,14-tetraoxaheptadecane delivered the highest activity of 41.20 kgPP/gCat. These results suggest that tetraether donors combine synthetic simplicity, low cost, and low toxicity with promising catalytic performance and application prospects. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
京公网安备11010802047317号