Citation: XIAO Shijing, LU Honglan, ZHANG Minghui. STUDIES ON TiCI4/Mg (OEt)2/EB SUPPORTED CATALYSTS FOR PROPYLENE POLYMERIZATION[J]. Chinese Journal of Polymer Science, ;1990, 8(3): 253-260. shu

STUDIES ON TiCI4/Mg (OEt)2/EB SUPPORTED CATALYSTS FOR PROPYLENE POLYMERIZATION

Received Date: 20 June 1989

The supported catalysts for propylene polymerization were prepared by milling Mg (OEt)2 with EB (ethylbenzoate) and treating with TiCl4 solution. When TiCl4/(Mg(OEt)2/EB) (mol.) ratio was increased, decrease in contents of-OEt and Ti of the catalysts was observed, while the content of EB increased. It is proved by analyses of IR, X-ray and XPS that during co-milling Mg(OEt)2 with EB no reactions have taken place. But after treatment with TiCl4 solution, Mg(OEt)2 converts into MgCl2 and EB coordinates on the resulting MgCl2 carrier,a surface complex forms.The activity of catalysts,isotacticity and vicosimetric molecular weight of polypropylene increase with the decrease of the content of ethoxyl group.The kinetic curves of propene polymerization obtained with present catalysts system display decay curves.It is found from the triad tacticity calculated from the expanded spectra of methyl carbon region that,ethoxyl group in catalyst has an effect on the configuration of polymer chain.
1. [1]
  Hailong He , Wenbing Wang , Wenmin Pang , Chen Zou , Dan Peng . Double stimulus-responsive palladium catalysts for ethylene polymerization and copolymerization. Chinese Chemical Letters, 2024, 35(7): 109534-. doi: 10.1016/j.cclet.2024.109534
2. [2]
  Xiangyu Chen , Aihao Xu , Dong Wei , Fang Huang , Junjie Ma , Huibing He , Jing Xu . Atomic cerium-doped CuO_x catalysts for efficient electrocatalytic CO₂ reduction to CH₄. Chinese Chemical Letters, 2025, 36(1): 110175-. doi: 10.1016/j.cclet.2024.110175
3. [3]
  Dong Cheng , Youyou Feng , Bingxi Feng , Ke Wang , Guoxin Song , Gen Wang , Xiaoli Cheng , Yonghui Deng , Jing Wei . Polyphenol-mediated interfacial deposition strategy for supported manganese oxide catalysts with excellent pollutant degradation performance. Chinese Chemical Letters, 2024, 35(5): 108623-. doi: 10.1016/j.cclet.2023.108623
4. [4]
  Yufei Liu , Liang Xiong , Bingyang Gao , Qingyun Shi , Ying Wang , Zhiya Han , Zhenhua Zhang , Zhaowei Ma , Limin Wang , Yong Cheng . MOF-derived Cu based materials as highly active catalysts for improving hydrogen storage performance of Mg-Ni-La-Y alloys. Chinese Chemical Letters, 2024, 35(12): 109932-. doi: 10.1016/j.cclet.2024.109932
5. [5]
  Gregorio F. Ortiz . Some facets of the Mg/Na₃VCr_0.5Fe_0.5(PO₄)₃ battery. Chinese Chemical Letters, 2024, 35(10): 109391-. doi: 10.1016/j.cclet.2023.109391
6. [6]
  Wenlong LI , Xinyu JIA , Jie LING , Mengdan MA , Anning ZHOU . Photothermal catalytic CO₂ hydrogenation over a Mg-doped In₂O_3-x catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 919-929. doi: 10.11862/CJIC.20230421
7. [7]
  Shuangxi Li , Huijun Yu , Tianwei Lan , Liyi Shi , Danhong Cheng , Lupeng Han , Dengsong Zhang . NO_x reduction against alkali poisoning over Ce(SO₄)₂-V₂O₅/TiO₂ catalysts by constructing the Ce⁴⁺–SO₄²⁻ pair sites. Chinese Chemical Letters, 2024, 35(5): 108240-. doi: 10.1016/j.cclet.2023.108240
8. [8]
  Peng Wang , Jianjun Wang , Ni Song , Xin Zhou , Ming Li . Radical dehydroxymethylative fluorination of aliphatic primary alcohols and diverse functionalization of α-fluoroimides via BF₃·OEt₂-catalyzed C‒F bond activation. Chinese Chemical Letters, 2025, 36(1): 109748-. doi: 10.1016/j.cclet.2024.109748
9. [9]
  Xinlong WANG , Zhenguo CHENG , Guo WANG , Xiaokuen ZHANG , Yong XIANG , Xinquan WANG . Enhancement of the fragile interface of high voltage LiCoO₂ by surface gradient permeation of trace amounts of Mg/F. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 571-580. doi: 10.11862/CJIC.20230259
10. [10]
  Mengli Xu , Zhenmin Xu , Zhenfeng Bian . Achieving Ullmann coupling reaction via photothermal synergy with ultrafine Pd nanoclusters supported on mesoporous TiO2. Chinese Journal of Structural Chemistry, 2024, 43(7): 100305-100305. doi: 10.1016/j.cjsc.2024.100305
11. [11]
  Sanmei Wang , Dengxin Yan , Wenhua Zhang , Liangbing Wang . Graphene-supported isolated platinum atoms and platinum dimers for CO₂ hydrogenation: Catalytic activity and selectivity variations. Chinese Chemical Letters, 2025, 36(4): 110611-. doi: 10.1016/j.cclet.2024.110611
12. [12]
  Fanxin Kong , Hongzhi Wang , Huimei Duan . Inhibition effect of sulfation on Pt/TiO2 catalysts in methane combustion. Chinese Journal of Structural Chemistry, 2024, 43(5): 100287-100287. doi: 10.1016/j.cjsc.2024.100287
13. [13]
  Muhammad Humayun , Mohamed Bououdina , Abbas Khan , Sajjad Ali , Chundong Wang . Designing single atom catalysts for exceptional electrochemical CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(1): 100193-100193. doi: 10.1016/j.cjsc.2023.100193
14. [14]
  Guangchang Yang , Shenglong Yang , Jinlian Yu , Yishun Xie , Chunlei Tan , Feiyan Lai , Qianqian Jin , Hongqiang Wang , Xiaohui Zhang . Regulating local chemical environment in O3-type layered sodium oxides by dual-site Mg²⁺/B³⁺ substitution achieves durable and high-rate cathode. Chinese Chemical Letters, 2024, 35(9): 109722-. doi: 10.1016/j.cclet.2024.109722
15. [15]
  Yang Yang , Jing-Li Luo , Xian-Zhu Fu . Water-oxidation intermediates enabling electrochemical propylene epoxidation. Chinese Journal of Structural Chemistry, 2024, 43(5): 100269-100269. doi: 10.1016/j.cjsc.2024.100269
16. [16]
  Jin Long , Xingqun Zheng , Bin Wang , Chenzhong Wu , Qingmei Wang , Lishan Peng . Improving the electrocatalytic performances of Pt-based catalysts for oxygen reduction reaction via strong interactions with single-CoN₄-rich carbon support. Chinese Chemical Letters, 2024, 35(5): 109354-. doi: 10.1016/j.cclet.2023.109354
17. [17]
  Renshu Huang , Jinli Chen , Xingfa Chen , Tianqi Yu , Huyi Yu , Kaien Li , Bin Li , Shibin Yin . Synergized oxygen vacancies with Mn2O3@CeO2 heterojunction as high current density catalysts for Li–O2 batteries. Chinese Journal of Structural Chemistry, 2023, 42(11): 100171-100171. doi: 10.1016/j.cjsc.2023.100171
18. [18]
  Lihua HUANG , Jian HUA . Denitration performance of HoCeMn/TiO₂ catalysts prepared by co-precipitation and impregnation methods. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 629-645. doi: 10.11862/CJIC.20230315
19. [19]
  Yuchen Guo , Xiangyu Zou , Xueling Wei , Weiwei Bao , Junjun Zhang , Jie Han , Feihong Jia . Fe regulating Ni3S2/ZrCoFe-LDH@NF heterojunction catalysts for overall water splitting. Chinese Journal of Structural Chemistry, 2024, 43(2): 100206-100206. doi: 10.1016/j.cjsc.2023.100206
20. [20]
  Yufei Jia , Fei Li , Ke Fan . Surface reconstruction of Cu-based bimetallic catalysts for electrochemical CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(3): 100255-100255. doi: 10.1016/j.cjsc.2024.100255

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(908)
HTML views(32)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return