KINETICS OF ETHYLENE POLYMERIZATION OVER TITANIUMMAGNESIUM CATALYSTS: THE REASONS FOR THE OBSERVED SECOND ORDER OF POLYMERIZATION RATE WITH RESPECT TO ETHYLENE

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

MATSKO MIKHAIL A.; ZAKHAROV VLADIMIR A.; NIKOLAEVA MARINA I.; MIKENAS TATIANA B.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: POLYOLEFINS JOURNALS Year:2015 | Volume:2 | Issue:1 Page(s): 27-38

Download Full-Text

View:

248

Download:

Cites:

Information Journal Paper

Title

KINETICS OF ETHYLENE POLYMERIZATION OVER TITANIUMMAGNESIUM CATALYSTS: THE REASONS FOR THE OBSERVED SECOND ORDER OF POLYMERIZATION RATE WITH RESPECT TO ETHYLENE

Author(s)

MATSKO MIKHAIL A. | ZAKHAROV VLADIMIR A. | NIKOLAEVA MARINA I. | MIKENAS TATIANA B. | Issue Writer Certificate

Keywords

POLYETHYLENE (PE)

POLYMERIZATION KINETICS

ZIEGLER-NATTA POLYMERIZATION

MOLECULAR WEIGHT DISTRIBUTION/MOLAR MASS DISTRIBUTION

Abstract

The data on the effect of ethylene concentration on polymerization rate for several modifications of modern highly active titanium–magnesium catalysts TiCl4/MgCl2 are presented. These catalysts differ in titanium content and conditions of support preparation, activities, and the shape of kinetic curves. It is found that the observed order of polymerization rate with respect to ethylene in the range of ethylene pressures of 0.5-6 bar is 1.8-2.1 for all catalysts used (polymerization at 80oC, AlEt3 used as a cocatalyst). When AlEt3 was replaced with Al (i-Bu) 3, the reaction order decreased to 1.3-1.4. In order to elucidate the possible reasons for the observed high order with respect to ethylene, we analyzed the data on the effect of monomer concentration on the molecular weight of polyethylene. The results gave grounds for suggesting that the observed order with respect to monomer is attributable to the effect of ethylene concentration on the number of active sites. The possible reaction scheme explaining the nonlinear dependence of the polymerization rate on monomer concentration was proposed based on these data.

Cites

No record.

References

No record.

Cite

APA: Copy

MATSKO, MIKHAIL A., ZAKHAROV, VLADIMIR A., NIKOLAEVA, MARINA I., & MIKENAS, TATIANA B.. (2015). KINETICS OF ETHYLENE POLYMERIZATION OVER TITANIUMMAGNESIUM CATALYSTS: THE REASONS FOR THE OBSERVED SECOND ORDER OF POLYMERIZATION RATE WITH RESPECT TO ETHYLENE. POLYOLEFINS JOURNALS, 2(1), 27-38. SID. https://sid.ir/paper/347247/en

Vancouver: Copy

MATSKO MIKHAIL A., ZAKHAROV VLADIMIR A., NIKOLAEVA MARINA I., MIKENAS TATIANA B.. KINETICS OF ETHYLENE POLYMERIZATION OVER TITANIUMMAGNESIUM CATALYSTS: THE REASONS FOR THE OBSERVED SECOND ORDER OF POLYMERIZATION RATE WITH RESPECT TO ETHYLENE. POLYOLEFINS JOURNALS[Internet]. 2015;2(1):27-38. Available from: https://sid.ir/paper/347247/en

IEEE: Copy

MIKHAIL A. MATSKO, VLADIMIR A. ZAKHAROV, MARINA I. NIKOLAEVA, and TATIANA B. MIKENAS, “KINETICS OF ETHYLENE POLYMERIZATION OVER TITANIUMMAGNESIUM CATALYSTS: THE REASONS FOR THE OBSERVED SECOND ORDER OF POLYMERIZATION RATE WITH RESPECT TO ETHYLENE,” POLYOLEFINS JOURNALS, vol. 2, no. 1, pp. 27–38, 2015, [Online]. Available: https://sid.ir/paper/347247/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops