Zobrazeno 1 - 10
of 2 985
pro vyhledávání: '"Ziegler-Natta catalyst"'
Autor:
Masayoshi Saito, Hiroshi Kashimura, Takuo Kataoka, Masahide Murata, Yusuke Sakuda, Hiroyuki Yamada, Hideyuki Takahashi
Publikováno v:
Polyolefins Journal, Vol 11, Iss 2, Pp 115-124 (2024)
This report is on the characterization of active Ti center in heterogeneous Ziegler-Natta catalysts with Soft X-ray Emission Spectrometer (SXES). Since titanium in the catalyst has various chemical bonds, it is important to grasp the chemical bond st
Externí odkaz:
https://doaj.org/article/ea546f98fc1a4d3ba26697c205109c11
Publikováno v:
Polyolefins Journal, Vol 11, Iss 2, Pp 83-93 (2024)
Polypropylene is one of the most widely used synthetic resins, which is mainly synthesized with Ziegler-Natta catalysts. In this paper, the functionalized Ziegler-Natta catalyst is applied to prepare high-performance polypropylene. A new way to synth
Externí odkaz:
https://doaj.org/article/148e8d62ea6e46c589472e9f951e6fe1
Autor:
Hiren Bhajiwala, Virendrakumar Gupta
Publikováno v:
Polyolefins Journal, Vol 11, Iss 1, Pp 61-70 (2024)
Ultra-high molecular weight polyethylene (UHMWPE) was synthesized using Bi-supported SiO2/MgCl2/TiCl4 (Si-Mg-Ti) Ziegler-Natta catalyst in conjugation with triethyl aluminum (TEA). The impact of temperature and the presence of a chain-terminating age
Externí odkaz:
https://doaj.org/article/b28f804b78064b9b87dba0a6210048ed
Autor:
Guo, Tao a, b, Li, Wei a, b, ⁎, Dong, Chuanding a, b, Wang, Jingdai a, b, Yang, Yongrong a, b
Publikováno v:
In Chemical Engineering Journal 15 June 2024 490
Autor:
Thanyaporn Pongchan, Praonapa Tumawong, Wanna Phiwkliang, Sutheerawat Samingprai, Piyasan Praserthdam, Bunjerd Jongsomjit
Publikováno v:
South African Journal of Chemical Engineering, Vol 46, Iss , Pp 56-64 (2023)
The effect of different prepared magnesium sources including MgCl2 (ZN-THF), metallic magnesium powder (ZN-O), and MGE (ZN-MGE) as the support of titanium-based Ziegler-Natta catalysts on behaviors of gas-phase ethylene/1-hexene copolymerization was
Externí odkaz:
https://doaj.org/article/deac36ee36834b4eb8526dee3f2b6dc5
Publikováno v:
SynOpen, Vol 07, Iss 03, Pp 293-296 (2023)
Externí odkaz:
https://doaj.org/article/379f7e0445cc4f1fadc2c65ab560c703
Publikováno v:
Hecheng xiangjiao gongye, Vol 47, Iss 4, Pp 348-348 (2024)
The precursor MgCl2 · nROH of supported Ziegler Natta catalyst was prepared by chemical activation method, and different pre catalysts TiCl4/MgCl2 (C-Cat) were prepared by loading TiCl4. At the same time, the pre catalysts TiCl4/MgCl2 (P-Cat) and C-
Externí odkaz:
https://doaj.org/article/c932a409c2cb4275b2e8619419adc4b4
Publikováno v:
Polymer Testing, Vol 124, Iss , Pp 108084- (2023)
The creep resistance of polymer determines the dimensional stability of product under stress. The isotactic polybutene-1 (iPB) with outstanding high-temperature creep resistance and stress-crack resistance is applied widely in the field of hot-water
Externí odkaz:
https://doaj.org/article/f21da4eb08024724897d56fcec64e250
Publikováno v:
Polyolefins Journal, Vol 9, Iss 2, Pp 117-127 (2022)
Ziegler-Natta catalyst for propylene polymerization, which TiCl4 and di-alkyl phthalate were supported on MgCl2, was analyzed by solid state 13C NMR. It was confirmed that the spin-lattice relaxation time (“relaxation time” hereafter) of carbonyl
Externí odkaz:
https://doaj.org/article/d4b40a1c3bbf4f7b899b2d5a924588a1
Autor:
Stefano Milione, Stefania Pragliola
Publikováno v:
Symmetry, Vol 16, Iss 1, p 18 (2023)
The stereoselective polymerization of conjugated dienes promoted by using transition metal complexes has attracted much interest in both industrial and academic environments for the relevance of polydienes as synthetic rubbers and for the challenging
Externí odkaz:
https://doaj.org/article/0c88c4d8e3144be38ca810e53f218e3a