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

Chromium complexes supported by the bidentate PN ligands: synthesis, characterization and application for ethylene polymerization

2018 ◽  
Vol 47 (38) ◽  
pp. 13459-13465 ◽  
Author(s):  
Quande Zheng ◽  
Dejuan Zheng ◽  
Binghao Han ◽  
Shaofeng Liu ◽  
Zhibo Li
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ethylene Polymerization ◽  
Chromium Complexes ◽  
Highly Active ◽  
Imine Ligands

Chromium complexes bearing phosphine–imine ligands are highly active for ethylene polymerization and produce HDPE with a high molecular weight.

Paramagnetic (Benzyl)chromium Complexes as Homogeneous Ethylene Polymerization Catalysts

1995 ◽  
Vol 14 (2) ◽  
pp. 738-745 ◽  
Author(s):  
Gautam Bhandari ◽  
Youhyuk Kim ◽  
Jeffrey M. McFarland ◽  
Arnold L. Rheingold ◽  
Klaus H. Theopold
Keyword(s):  
Ethylene Polymerization ◽  
Chromium Complexes ◽  
Polymerization Catalysts

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

Accessing highly linear polyethylenes by 2-(1-aryliminoethyl)-7-arylimino-6,6-dimethylcyclopenta[b]pyridylchromium(iii) chlorides

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91401-91408 ◽  
Author(s):  
Youfu Zhang ◽  
Chuanbing Huang ◽  
Xiang Hao ◽  
Xinquan Hu ◽  
Wen-Hua Sun
Keyword(s):  
Ethylene Polymerization ◽  
Chromium Complexes

The title complexes showed good activities toward ethylene polymerization producing highly linear polyethylenes, and catalytic behaviors of precatalysts were significantly affected by the substituents of chromium complexes.

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.

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