Salakhov Ildar I, Mikenas Tatiana B, Zakharov Vladimir A, Kozlov Valeriy G, Matsko Mikhail A, Suslova Tatiana N
R&D Center PJSC Nizhnekamskneftekhim, 423574 Nizhnekamsk, Russia.
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
Int J Mol Sci. 2022 Sep 7;23(18):10335. doi: 10.3390/ijms231810335.
Ethylene polymerization and ethylene/1-hexene copolymerization over the titanium-magnesium catalytic system in the presence of chlorocyclohexane (CHC) and hexachloro-p-xylene (HCPX) has been studied. Modification of TMC with chlorocyclohexane and hexachloro-p-xylene increased catalyst activity severalfold for both ethylene polymerization and ethylene/1-hexene copolymerization. The key kinetic regularities of ethylene homopolymerization and ethylene/1-hexene copolymerization in the presence of CHC and HCPX were determined, and the copolymerization constants were measured. Molecular characteristics and the copolymer composition were determined for the synthesized samples of ethylene homopolymers and ethylene/hexene copolymers. Modification of the titanium-magnesium catalyst with chlorinated organic compounds reduced 1-hexene content in the copolymer; polymerization was sensitive to 1-hexene as a regulator of polymer molecular weight. The potential mode of action of chlorinated organic modifiers on catalytic properties of titanium-magnesium catalyst is discussed.
研究了在氯代环己烷（CHC）和六氯对二甲苯（HCPX）存在下，乙烯在钛镁催化体系上的聚合以及乙烯/1-己烯的共聚反应。用氯代环己烷和六氯对二甲苯对钛镁催化剂（TMC）进行改性，使乙烯聚合和乙烯/1-己烯共聚的催化剂活性提高了几倍。确定了在CHC和HCPX存在下乙烯均聚和乙烯/1-己烯共聚的关键动力学规律，并测定了共聚常数。对合成的乙烯均聚物和乙烯/己烯共聚物样品的分子特性和共聚物组成进行了测定。用氯化有机化合物对钛镁催化剂进行改性降低了共聚物中1-己烯的含量；聚合反应对作为聚合物分子量调节剂的1-己烯敏感。讨论了氯化有机改性剂对钛镁催化剂催化性能的潜在作用方式。
