Supported catalysts prepared using Ti(C7H11)4 for ethylene polymerization

1982 ◽  
Vol 21 (3) ◽  
pp. 239-242 ◽  
Author(s):  
M. A. Makarova ◽  
G. A. Nesterov ◽  
V. A. Zakharov ◽  
K. -H. Thiele ◽  
A. Dimitrov ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts

Ethylene polymerization over supported catalysts [2,6-bis(imino)pyridyl iron dichloride/magnesium dichloride] with AlR3 as an activator

2005 ◽  
Vol 43 (10) ◽  
pp. 2128-2133 ◽  
Author(s):  
Tatiana B. Mikenas ◽  
Vladimir A. Zakharov ◽  
Lyudmila G. Echevskaya ◽  
Michail A. Matsko
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts

Studies of supported catalysts for ethylene polymerization, prepared using organovanadium compounds

1989 ◽  
Vol 40 (2) ◽  
pp. 375-380
Author(s):  
S. A. Vasnetsov ◽  
V. A. Poluboyarov ◽  
V. A. Zakharov ◽  
G. A. Nesterov ◽  
L. I. Vyshinskaya ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts

Effect of protic compounds on ethylene polymerization by HfTi supported catalysts

Polymer ◽  
1993 ◽  
Vol 34 (16) ◽  
pp. 3514-3519 ◽  
Author(s):  
C. Ferrero ◽  
F. Masi ◽  
F. Menconi ◽  
L. Barazzoni ◽  
A. Moalli ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts

Supported catalysts based on 2,6-bis(imino)pyridyl complex of Fe(II): DRIFTS study of the catalyst formation and data on ethylene polymerization

2005 ◽  
Vol 32 (1-2) ◽  
pp. 77-82 ◽  
Author(s):  
Nina V. Semikolenova ◽  
Vladimir A. Zakharov ◽  
Evgenii A. Paukshtis ◽  
Irina G. Danilova
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts ◽  
Catalyst Formation

Study of the ethylene polymerization over homogeneous and supported catalysts based on 2,6-bis(imino)pyridyl complexes of Fe(II) and Co(II)

2002 ◽  
Vol 182-183 ◽  
pp. 283-294 ◽  
Author(s):  
N.V Semikolenova ◽  
V.A Zakharov ◽  
E.P Talsi ◽  
D.E Babushkin ◽  
A.P Sobolev ◽  
...  
Keyword(s):  
Ethylene Polymerization ◽  
Supported Catalysts

Ethylene Polymerization over Homogeneous and Supported Catalysts Based on Bis(imino)pyridine Co(II) Complex: Data on the Number of Active Centers and Propagation Rate Constant

2008 ◽  
Vol 209 (24) ◽  
pp. 2510-2515 ◽  
Author(s):  
Artem A. Barabanov ◽  
Gennady D. Bukatov ◽  
Vladimir A. Zakharov ◽  
Nina V. Semikolenova ◽  
Ljudmila G. Echevskaja ◽  
...  
Keyword(s):  
Rate Constant ◽  
Ethylene Polymerization ◽  
Supported Catalysts ◽  
Propagation Rate ◽  
Complex Data ◽  
Active Centers ◽  
Propagation Rate Constant

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

scholarly journals Ethylene Polymerization over Transition Metal Supported Catalysts. III. Vanadium

e-Polymers ◽  
2006 ◽  
Vol 6 (1) ◽  
Author(s):  
Inês Matos ◽  
Yingjun Zhang ◽  
Isabel Fonseca ◽  
Francisco Lemos ◽  
Manda Lemos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Oxidation State ◽  
Ethylene Polymerization ◽  
Supported Catalysts ◽  
Zeolite Catalysts ◽  
Experimental Conditions ◽  
Zeolite Nay ◽  
Vanadium Catalysts ◽  
Kinetic Rate Constants ◽  
Order Of Magnitude

AbstractThe polymerization of ethylene in the presence of vanadium catalysts supported on zeolite NaY, HY and charcoal was examined. The catalysts were prepared by the incipient wetness method and characterized by a variety of techniques to determine the oxidation state of the vanadium species inside the zeolite. In all the catalysts that were prepared vanadium is not in a single oxidation state. These catalysts were active in the polymerization of ethylene with activities of the order of magnitude 105 gPE/molV.[M].h for the zeolite catalysts and 103 gPE/molV.[M].h for the charcoal systems. No polymer could be obtained in the absence of alkylaluminum or aluminoxane in the experimental conditions used. The kinetics of ethylene polymerization reactions using the vanadium catalysts was studied. A kinetic model based on a proposed mechanism for these reactions was used to fit the experimental data. The application of this model resulted in very good fittings and the kinetic rate constants of each elementary step could be estimated. Since the polyethylene that was produced is closely bound to the zeolite catalysts, the thermal and mechanical properties of the PE/zeolite composites were measured, indicating that the presence of zeolite improved the mechanical properties of the polymers produced.

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