|本期目录/Table of Contents|

[1]杜文博,刘洋,钱陈杲,等.α-磺酸-β-二亚胺镍催化剂制备聚乙烯[J].石化技术与应用,2023,4:267-271.
 DU Wen-bo,LIU Yang,QIAN Chen-gao,et al.Preparation of polyethylene by α-sulfonato-β-diimine nickel catalyst[J].Petrochemical technology & application,2023,4:267-271.
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α-磺酸-β-二亚胺镍催化剂制备聚乙烯(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2023年4期
页码:
267-271
栏目:
出版日期:
2023-07-10

文章信息/Info

Title:
Preparation of polyethylene by α-sulfonato-β-diimine nickel catalyst
文章编号:
1009-0045(2023)04-0267-05
作者:
杜文博刘洋钱陈杲岑静芸李静静刘振宇蒋文军梁胜彪
(中国石化茂名分公司 研究院,广东 茂名525011)
Author(s):
DU Wen-bo LIU Yang QIAN Chen-gao CEN Jing-yun LI Jing-jing LIU Zhen-yu JIANG Wen-jun LIANG Sheng-biao
(Research Institute of Maoming Branch Company,SINOPEC,Maoming 525011, China)
关键词:
镍催化剂乙烯改性甲基铝氧烷α-磺酸-β-二亚胺镍配合物活性支化聚乙烯
Keywords:
nickel catalyst ethylene modified methylaluminoxane α-sulfonato-β-diimine nickel activity branched polyethylene
分类号:
TQ 325.1
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2023.04.0267
文献标识码:
B
摘要:
以改性甲基铝氧烷为助催化剂,α-磺酸-β-二亚胺镍配合物为催化剂进行了乙烯聚合,考察了Al/Ni(摩尔比,下同)、聚合温度、乙烯压力对聚合性能以及聚乙烯微观结构的影响。结果表明:随着Al/Ni的增加,聚合活性先增加后降低,聚合物重均相对分子质量(Mw)变化较小,且相对分子质量分布指数基本为1.1;随着聚合温度的升高,聚合活性和聚合物Mw先增大后减小,50 ℃时聚合活性达到最大值,80 ℃时聚合物Mw达到最大值;随着乙烯压力升高,聚合活性和聚合物Mw均增大;制得的聚乙烯主要含有甲基和长支链。
Abstract:
With modified methylaluminoxane as cocatalyst, α-sulfonato-β-diimine nickel as catalysts for ethylene polymerization, effects of Al/Ni (mole ratio, similarly hereinafter), polymerization temperature and ethylene pressure on polymerization performance and polyethylene microstructure were investigated. The results showed that with the increase of Al/Ni, the polymerization activity were increased and then decreased. However, polymer relative molecular weight (Mw) was essentially unchanged, and the molecular weight distribution index was always about 1.1.With the increase of polymerization temperature, the polymerization activity and Mw were increased and then decreased, reaching the maximum activity at 50 ℃ and reaching the maximum Mw at 80 ℃. As the ethylene pressure increased, both the polymerization activity and Mw increased. The obtained polymers contained only methyl and long branch chains.

参考文献/References

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2023-07-10