MgCl2 center dot 6C(6)H(11)OH: a high mileage porous support for ziegler-natta catalyst

TitleMgCl2 center dot 6C(6)H(11)OH: a high mileage porous support for ziegler-natta catalyst
Publication TypeJournal Article
Year of Publication2012
AuthorsGnanakumar, ES, Thushara, KS, Gowda, RR, Raman, SK, Ajithkumar, TG, Rajamohanan, PR, Chakraborty, D, Gopinath, CS
JournalJournal of Physical Chemistry C
Volume116
Issue45
Pagination24115-24122
Date PublishedNOV
ISSN1932-7447
Abstract

A new and single phase molecular adduct of MgCl2 with six cyclohexanol molecules MgCl2 center dot 6C(6)H(11)OH (MgCyOH) has been synthesized. Structural insight to this adduct was obtained by a variety of physicochemical methods. C-13 CPMAS spectrum and single pulse MAS spectra with high power proton decoupling recorded at different relaxation time showed the presence of two different sets of magnetically unequal cylcohexanol molecules present around Mg2+. A Raman feature of MgCyOH at 712 cm(-1) confirms that cylcohexanol molecules are present around Mg2+ in an octahedral environment. MgCyOH has been used as support material to prepare Ziegler-Natta (Z-N) active catalyst. Textural property of above Z-N catalyst exhibits high surface area (236 m(2)/g) with high porosity. Above active catalyst has been screened for ethylene polymerization. Depending on the cocatalyst employed (Me3Al, Et3Al, and iso-Bu3Al) and ethylene pressure, polyethylene yield varies an order of magnitude, from 378 to 3570 g/g catalyst, indicating a possible creation of different active sites and different interaction between cocatalyst and catalyst.

DOI10.1021/jp3074078
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)4.814
Divison category: 
Catalysis and Inorganic Chemistry
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