Immobilization of a zirconium complex bearing bis(phenoxyketimine) ligand on MCM-41 for ethylene polymerization

Polymer ◽  
2005 ◽  
Vol 46 (24) ◽  
pp. 11093-11098 ◽  
Author(s):  
Shangtao Chen ◽  
Cunyue Guo ◽  
Lei Liu ◽  
Hong Xu ◽  
Jinxiang Dong ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Zirconium Complex ◽  
Mcm 41

Synthesis of a [(π-Cyano-nacnac)Cp]zirconium Complex and Its Remote Activation for Ethylene Polymerization

2010 ◽  
Vol 29 (22) ◽  
pp. 6104-6110 ◽  
Author(s):  
Alan R. Cabrera ◽  
Yanika Schneider ◽  
Mauricio Valderrama ◽  
Roland Fröhlich ◽  
Gerald Kehr ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Zirconium Complex

Chromium supported onto swelled Al-MCM-41 materials: a promising catalysts family for ethylene polymerization

2005 ◽  
Vol 6 (2) ◽  
pp. 153-157 ◽  
Author(s):  
G. Calleja ◽  
J. Aguado ◽  
A. Carrero ◽  
J. Moreno
Keyword(s):  
Ethylene Polymerization ◽  
Mcm 41

A binary nickel diimine-MCM-41 supported catalyst and its application in ethylene polymerization

2019 ◽  
Vol 377 ◽  
pp. 63-71 ◽  
Author(s):  
Cristiano Favero ◽  
Maurício B. Closs ◽  
Griselda B. Galland ◽  
Rafael Stieler ◽  
Enéderson Rossetto ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalyst ◽  
Mcm 41

scholarly journals Ethylene Extrusion Polymerization by Heterogeneous bi-Supported Ziegler-Natta Catalysts

2009 ◽  
Vol 3 (1) ◽  
pp. 67-72
Author(s):  
Mohammad Ali Semsarzadeh ◽  
◽  
Alireza Aghili ◽  
Keyword(s):  
Catalytic Activity ◽  
Atmospheric Pressure ◽  
Ethylene Polymerization ◽  
Santa Barbara ◽  
Catalytic Activities ◽  
Molar Ratios ◽  
Polymerization Reactor ◽  
Fibrous Morphology ◽  
Mcm 41 ◽  
Ziegler Natta Catalysts

The MCM-41 (Mobil Composition of Matter) and SBA-16 (Santa Barbara Amorphous) supported TiCl4 and TiCl4/MgCl2 catalysts with different molar ratios of Mg/Ti were synthesized and used for ethylene polymerization under atmospheric pressure. The nanochannels of these supports serve as a nanoscale polymerization reactor and the polyethylene nanofibers were extruded during the reaction. The effect of MgCl2 on catalytic activity and morphology of resulting polyethylene has been investigated too. MgCl2 has enhanced the catalytic activities and made the SBA-16/MgCl2/TiCl4 catalytic system has fibrous morphology.

scholarly journals Ethylene polymerization catalyzed by TiCl4/MgCl2/MCM-41 catalytic system

2007 ◽  
Vol 10 (5) ◽  
pp. 469-475 ◽  
Author(s):  
Weiqing Zhang ◽  
Shibiao Zhou ◽  
Ruxiang Zhang
Keyword(s):  
Catalytic System ◽  
Ethylene Polymerization ◽  
Mcm 41

Ethylene Polymerization by a New Zirconium Complex

2011 ◽  
Vol 214 ◽  
pp. 699-703
Author(s):  
Zheng Zai Cheng ◽  
Yu Jing Nie ◽  
Xiao Chao Yan ◽  
Rui Lei ◽  
Su Su Lin
Keyword(s):  
Molecular Weight ◽  
Reaction Temperature ◽  
Ethylene Polymerization ◽  
Average Molecular Weight ◽  
Zirconium Complex ◽  
Melting Points ◽  
Ligand Complex ◽  
Dichloromethane Solution ◽  
Gel Permeation ◽  
Very High

Novel zirconium complex C2 has been prepared by treatment of the ligand complex C1 with ZrCl4•2THF in dichloromethane solution. The complex C1 and C2 were characterized by 1H-NMR and IR. Activated by MAO, Complex C2 displays very high activity for ethylene polymerization under the reaction temperature of 30～80°C and the viscosity-average molecular weight of polyethylene is more than 3.50×104 when reaction temperature is no more than 60°C.The molecular-weight distribution measured by gel permeation reached 2.3.High melting points measured by DSC indicates that the polyethylene produced by complex C2 is high linearity and high crystallinity.

MCM-41/ansa-zirconocene supported catalysts: Preparation, characterization and catalytic behaviour in ethylene polymerization

2009 ◽  
Vol 304 (1-2) ◽  
pp. 107-116 ◽  
Author(s):  
Carlos Alonso-Moreno ◽  
Damián Pérez-Quintanilla ◽  
Dorian Polo-Cerón ◽  
Sanjiv Prashar ◽  
Isabel Sierra ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts ◽  
Catalysts Preparation ◽  
Catalytic Behaviour ◽  
Mcm 41

Ethylene polymerization over chromium complexes grafted onto MCM-41 materials

1999 ◽  
pp. 445-446 ◽  
Author(s):  
R. Ramachandra Rao ◽  
Bert M. Weckhuysen ◽  
Robert A. Schoonheydt
Keyword(s):  
Ethylene Polymerization ◽  
Chromium Complexes ◽  
Mcm 41
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