Strong Ion Pairing Effects on Single-Site Olefin Polymerization:  Mechanistic Insights in Syndiospecific Propylene Enchainment

2001 ◽  
Vol 123 (47) ◽  
pp. 11803-11804 ◽  
Author(s):  
Ming-Chou Chen ◽  
Tobin J. Marks
Keyword(s):  
Olefin Polymerization ◽  
Ion Pairing ◽  
Single Site

Single-Site Heterogeneous Catalysts for Olefin Polymerization Enabled by Cation Exchange in a Metal-Organic Framework

2016 ◽  
Vol 138 (32) ◽  
pp. 10232-10237 ◽  
Author(s):  
Robert J. Comito ◽  
Keith J. Fritzsching ◽  
Benjamin J. Sundell ◽  
Klaus Schmidt-Rohr ◽  
Mircea Dincă
Keyword(s):  
Cation Exchange ◽  
Heterogeneous Catalysts ◽  
Olefin Polymerization ◽  
Metal Organic Framework ◽  
Single Site ◽  
Metal Organic ◽  
Organic Framework

A Novel Single-Site Catalyst for Olefin Polymerization

2010 ◽  
Vol 657 ◽  
pp. 83-87
Author(s):  
Sriram Venkataramani ◽  
Tharanikkarasu Kannan
Keyword(s):  
Ethylene Polymerization ◽  
Titanium Tetrachloride ◽  
Olefin Polymerization ◽  
Single Site ◽  
Turnover Frequency ◽  
Reaction Conditions ◽  
Co Catalyst ◽  
Infra Red ◽  
Turn Over Frequency ◽  
Turn Over

A novel single-site catalyst was prepared from N-pheneyldiethanolamine and titanium tetrachloride and characterized using spectroscopic methods such as Nuclear Magnetic Resonance (NMR) spectroscopy and Infra Red (IR) spectroscopy. It was prepared insitu and used to polymerize ethylene along with methylaluminoxane (MAO) as co-catalyst. The turnover frequency for ethylene polymerization was found to be 350 g and 550g polymer/mol catalyst/h for 1 bar and at 2 bar respectively. As the turn over frequency at the studied reaction conditions is good, the present N-pheneyldiethanolamine-based catalyst is a good single-site catalyst for olefin polymerization

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