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MgCl<inf>2</inf>·6CH<inf>3</inf>OH: A simple molecular adduct and its influence as a porous support for olefin polymerization

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cris.author.scopus-author-id37028173000
cris.author.scopus-author-id25931474400
cris.author.scopus-author-id55615098900
cris.author.scopus-author-id6602749484
cris.author.scopus-author-id6701633383
cris.author.scopus-author-id57193812712
cris.author.scopus-author-id7004438876
dc.contributor.authorGnanakumar, Edwin S.
dc.contributor.authorGowda, Ravikumar R.
dc.contributor.authorKunjir, Shrikant
dc.contributor.authorAjithkumar, T. G.
dc.contributor.authorRajamohanan, P. R.
dc.contributor.authorChakraborty, Debashis
dc.contributor.authorGopinath, Chinnakonda S.
dc.date.accessioned2023-09-20T05:11:51Z
dc.date.available2023-09-20T05:11:51Z
dc.date.issued01-03-2013
dc.description.abstractA single phase molecular adduct, MgCl2·6CH3OH has been synthesized using MgCl2 and the simplest alcohol, methanol. Structural, spectroscopic, and morphological studies have been carried out for a better understanding of the single phase MgCl2·6CH 3OH adduct. 13C CPMAS solid state NMR studies show all six methanol molecules are magnetically equivalent and present in a single environment around the Mg2+ center. Raman spectral analysis of the characteristic peak at 708 cm-1 substantiates octahedral coordination of six CH3OH molecules around Mg2+. Solid state 13C NMR measurements, made after heat treatment at different temperatures, have been utilized to understand the variations in CH 3OH stoichiometry and coordination around Mg2+ with temperature. A titanated active catalyst, TiCl4 on MgCl 2·6CH3OH, has also been synthesized and subjected to detailed characterizations. The active catalyst shows high surface area (102 m2/g) and mesoporosity. The titanated catalyst has been screened for ethylene polymerization reactions using different cocatalysts (R3Al; R= -CH3, -CH2CH3, and -CH2CH(CH 3)2). A total of 7.25 kg of polyethylene per gram of catalyst has been obtained with Me3Al cocatalyst, which is six times higher in activity compared with commercial Me3Al/TiCl 4/MgCl2·6EtOH-supported catalyst. Although porosity influences the catalytic activity, other factors also seem to contribute to the total catalytic activity. © 2013 American Chemical Society.
dc.identifier.doi10.1021/cs300730j
dc.identifier.issn21555435
dc.identifier.scopus2-s2.0-84874637062
dc.identifier.urihttps://apicris.irins.org/handle/IITM2023/37844
dc.relation.ispartofseriesACS Catalysis
dc.sourceACS Catalysis
dc.subjectheterogeneous catalysis
dc.subjectmolecular adduct
dc.subjectolefin polymerization
dc.subjectZiegler-Natta catalyst
dc.titleMgCl<inf>2</inf>·6CH<inf>3</inf>OH: A simple molecular adduct and its influence as a porous support for olefin polymerization
dc.typeJournal
dspace.entity.typePublication
oaire.citation.endPage311
oaire.citation.issue3
oaire.citation.startPage303
oaire.citation.volume3
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
person.affiliation.cityChennai
person.affiliation.cityPune
person.affiliation.id60025757
person.affiliation.id60012548
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameNational Chemical Laboratory India
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