Effect of Internal Donors on the Performance of Ti-Mg Catalysts in Propylene Polymerization: Donor Introduction During or After MgCl2 Formation Full article
| Journal |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
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| Output data | Year: 2019, Volume: 577, Pages: 69-75 Pages count : 7 DOI: 10.1016/j.apcata.2019.03.010 | ||
| Tags | Ziegler-Natta catalysts; Electron donor; Internal donor substitution; Polymer molecular properties | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2017-2020 |
Abstract:
Propylene polymerization catalysts with different internal donors (ID) are synthesized by two methods: (1) a standard method with ID introduction during formation of MgCl2 by reacting Mg(OEt)2 with TiCl4, and (2) the introduction of ID on MgCl2 already formed in the presence of butyl acetate (the substitution method). 1,3-diether, dibutyl phthalate (DBP) and pentane-2,4-diol-dibenzoate (PDDB) are used as ID. Catalysts prepared with the same ID by both methods slightly differ in their composition, activity and stereospecificity (the content of xylene soluble polypropylene (PP) fraction). But the catalyst active sites produce PP, whose properties (melt flow index, MFI, and molecular-weight distribution as Mw/Mn) depend on ID in the same manner for both methods of catalyst synthesis. Hence, the effect of ID on the catalyst active sites is not related with the effect of ID on the formation of MgCl2 crystallites with different cuts.
Cite:
Bukatov G.D.
, Maslov D.K.
, Sergeev S.A.
, Matsko M.A.
Effect of Internal Donors on the Performance of Ti-Mg Catalysts in Propylene Polymerization: Donor Introduction During or After MgCl2 Formation
Applied Catalysis A: General. 2019. V.577. P.69-75. DOI: 10.1016/j.apcata.2019.03.010 WOS Scopus РИНЦ РИНЦ ANCAN OpenAlex
Effect of Internal Donors on the Performance of Ti-Mg Catalysts in Propylene Polymerization: Donor Introduction During or After MgCl2 Formation
Applied Catalysis A: General. 2019. V.577. P.69-75. DOI: 10.1016/j.apcata.2019.03.010 WOS Scopus РИНЦ РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Oct 10, 2018 |
| Accepted: | Mar 18, 2019 |
| Published online: | Mar 19, 2019 |
| Published print: | May 1, 2019 |
Identifiers:
| Web of science: | WOS:000466622900009 |
| Scopus: | 2-s2.0-85063427778 |
| Elibrary: | 38690849 | 41789649 |
| Chemical Abstracts: | 2019:619556 |
| Chemical Abstracts (print): | 170:501449 |
| OpenAlex: | W2924107548 |