STRUCTURAL STUDY OF MONO- AND BI-SUPPORTED ZIEGLER-NATTA CATALYSTS MGCL2/SIO2/TICL4/DONOR SYSTEMS

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ZOHURI G.; AHMADJOU S.; JAMJAH R.; NEKOU MANESH M.

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Journal Paper

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Journal: Iranian Polymer Journal Year:2001 | Volume:10 | Issue:3 Page(s): 149-155

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Title

STRUCTURAL STUDY OF MONO- AND BI-SUPPORTED ZIEGLER-NATTA CATALYSTS MGCL2/SIO2/TICL4/DONOR SYSTEMS

Author(s)

ZOHURI G. | AHMADJOU S. | JAMJAH R. | NEKOU MANESH M. | Issue Writer Certificate

Keywords

ZIEGLER-NATTA CATALYST

SUPPORTED CATALYST

POLYMERIZATION

STRUCTURAL STUDY

Abstract

Due to various components present in the ZIEGLER-NATTA CATALYST system and different interactions, taking place between them during the preparation and POLYMERIZATION, studying of the system is usually very difficult. In this study mono- and bi-supported catalyst systems Of MgCl2 (ethoxide type)/TiCl4/ID and SiO2/MgCl2 (ethoxide type)/TiCl4/DNBP were prepared for the POLYMERIZATION of propylene, whilst for POLYMERIZATION of ethylene, MgCl2 (ethoxide type)/SiO2/TiCl4 was prepared. Di-n-butyl phthalate (DNBP) and diisobutyl phthalate (DIBP) were used as internal donors (ID), whilst triethylaluminium (TEA) was used as the cocatalyst. STRUCTURAL STUDY was carried out using FTIR, SEM, XRF and BET techniques. The observed shift in vibration of C=O, and C-O bands of the electron donors indicate some interactions between the donors, support and the catalyst itself. Surface area of the mono-supported catalyst having the electron donor and bi-supported catalyst without electron donor were about 230 m2/g. For the bi-supported having DNBP as the donor, however, a value of 177 m2/g was obtained. SEM study shows that the spherical morphologies Of SiO2 are replicated on catalyst and to a lesser extent on final polyethylene obtained. Dimethoxymethyl cyclohexyl silane (DMMCS) was used as an external donor for the POLYMERIZATION of propylene.

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APA: Copy

ZOHURI, G., AHMADJOU, S., JAMJAH, R., & NEKOU MANESH, M.. (2001). STRUCTURAL STUDY OF MONO- AND BI-SUPPORTED ZIEGLER-NATTA CATALYSTS MGCL2/SIO2/TICL4/DONOR SYSTEMS. IRANIAN POLYMER JOURNAL (ENGLISH), 10(3), 149-155. SID. https://sid.ir/paper/530549/en

Vancouver: Copy

ZOHURI G., AHMADJOU S., JAMJAH R., NEKOU MANESH M.. STRUCTURAL STUDY OF MONO- AND BI-SUPPORTED ZIEGLER-NATTA CATALYSTS MGCL2/SIO2/TICL4/DONOR SYSTEMS. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2001;10(3):149-155. Available from: https://sid.ir/paper/530549/en

IEEE: Copy

G. ZOHURI, S. AHMADJOU, R. JAMJAH, and M. NEKOU MANESH, “STRUCTURAL STUDY OF MONO- AND BI-SUPPORTED ZIEGLER-NATTA CATALYSTS MGCL2/SIO2/TICL4/DONOR SYSTEMS,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 10, no. 3, pp. 149–155, 2001, [Online]. Available: https://sid.ir/paper/530549/en

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