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A Comparative Study of AlCl3 and FeCl2-Modified TiCl4MgCl2THF Catalytic System in the Presence of Hydrogen for Ethylene Polymerization
Joint Authors
Praserthdam, Piyasan
Jongsomjit, Bunjerd
Niyomthai, Thanyathorn
Ratchadaphet, Aniroot
Source
International Journal of Polymer Science
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-06
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Ethylene homopolymerization over TiCl4/MgCl2/THF catalysts modified with different metal halide additives (AlCl3 and FeCl2) with and without hydrogen was investigated based on catalytic activity and polymer properties.
Lewis acid modification can improve activity because it can remove the remaining THF in the final catalyst, which can poison the catalyst active sites via the ring-opening of THF that was confirmed by XRD measurements.
Moreover, the activity enhancement was due to the formation of acidic sites by modifying the catalysts with Lewis acids.
Thus, FeCl2 doped catalyst (Fe-THF) exhibited the highest activity followed by AlCl3 doped catalyst (Al-THF) and undoped catalyst (None-THF).
In H2/C2H4 molar ratio of 0.08, Fe-THF showed a better hydrogen response than Al-THF due to more titanium cluster distribution.
Fe-THF is considered to have more clustered Ti species than Al-THF.
As a consequence, it led us to obtain more possible chances to precede chain transfer reaction by hydrogen.
The molecular weight, melting temperature, and crystallinity of obtained polymers were investigated by GPC and DSC measurement, respectively.
American Psychological Association (APA)
Niyomthai, Thanyathorn& Ratchadaphet, Aniroot& Jongsomjit, Bunjerd& Praserthdam, Piyasan. 2016. A Comparative Study of AlCl3 and FeCl2-Modified TiCl4MgCl2THF Catalytic System in the Presence of Hydrogen for Ethylene Polymerization. International Journal of Polymer Science،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1106819
Modern Language Association (MLA)
Niyomthai, Thanyathorn…[et al.]. A Comparative Study of AlCl3 and FeCl2-Modified TiCl4MgCl2THF Catalytic System in the Presence of Hydrogen for Ethylene Polymerization. International Journal of Polymer Science No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1106819
American Medical Association (AMA)
Niyomthai, Thanyathorn& Ratchadaphet, Aniroot& Jongsomjit, Bunjerd& Praserthdam, Piyasan. A Comparative Study of AlCl3 and FeCl2-Modified TiCl4MgCl2THF Catalytic System in the Presence of Hydrogen for Ethylene Polymerization. International Journal of Polymer Science. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1106819
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1106819