Research output: Contribution to journal › Article › peer-review
Copolymerization of Ethylene with Alpha-Olefins over Supported Titanium–Magnesium Catalysts Containing Titanium Compounds in Different Oxidation and Coordination States. / Mikenas, Tatiana B.; Zakharov, Vladimir A.; Guan, Peng et al.
In: Applied Sciences (Switzerland), Vol. 13, No. 8, 5030, 04.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Copolymerization of Ethylene with Alpha-Olefins over Supported Titanium–Magnesium Catalysts Containing Titanium Compounds in Different Oxidation and Coordination States
AU - Mikenas, Tatiana B.
AU - Zakharov, Vladimir A.
AU - Guan, Peng
AU - Matsko, Mikhail A.
N1 - This research was funded by the MINISTRY OF SCIENCE AND HIGHER EDUCATION OF THE RUSSIAN FEDERATION (project AAAA21-121011490008-3). Публикация для корректировки.
PY - 2023/4
Y1 - 2023/4
N2 - Data were obtained on the copolymerization of ethylene with α-olefins over supported titanium–magnesium catalysts (TMC) prepared on the same magnesium dichloride support but differing in the composition and oxidation state of titanium. The copolymerization kinetics of ethylene with 1-hexene over TMC of different compositions were studied. Data on the composition of the produced ethylene–1-hexene copolymers, their molecular weight distribution, thermophysical characteristics, and branching distribution were presented. The constants of ethylene–1-hexene copolymerization over catalysts with different compositions were calculated. The TMC containing only Ti(II) compounds as the active component exhibited increased copolymerizing ability compared to the conventional TiCl4/MgCl2 catalyst containing Ti(III) compounds as the active component. In addition, TMC with Ti(II) as an active component produces copolymers with a more uniform branching distribution. It was shown that the TMC containing isolated Ti(II) ions could be used to produce X-ray amorphous ethylene-propylene elastomers with a high yield.
AB - Data were obtained on the copolymerization of ethylene with α-olefins over supported titanium–magnesium catalysts (TMC) prepared on the same magnesium dichloride support but differing in the composition and oxidation state of titanium. The copolymerization kinetics of ethylene with 1-hexene over TMC of different compositions were studied. Data on the composition of the produced ethylene–1-hexene copolymers, their molecular weight distribution, thermophysical characteristics, and branching distribution were presented. The constants of ethylene–1-hexene copolymerization over catalysts with different compositions were calculated. The TMC containing only Ti(II) compounds as the active component exhibited increased copolymerizing ability compared to the conventional TiCl4/MgCl2 catalyst containing Ti(III) compounds as the active component. In addition, TMC with Ti(II) as an active component produces copolymers with a more uniform branching distribution. It was shown that the TMC containing isolated Ti(II) ions could be used to produce X-ray amorphous ethylene-propylene elastomers with a high yield.
KW - Ziegler-Natta catalysts
KW - copolymer heterogeneity
KW - ethylene–1-hexene copolymerization
KW - ethylene–propylene copolymerization
KW - titanium oxidation state
KW - titanium-magnesium catalysts
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85156157839&origin=inward&txGid=a6aae4a156e53ff52709dd380791ff7f
UR - https://www.mendeley.com/catalogue/b34b34ea-2725-3307-8806-323c6a661bc2/
U2 - 10.3390/app13085030
DO - 10.3390/app13085030
M3 - Article
VL - 13
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
SN - 2076-3417
IS - 8
M1 - 5030
ER -
ID: 59248620