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RISPolymerization of ethylene using a mixed pyridilimine [N,N] catalysts based on Ni & Fe
The pyridilimine catalysts based on nickel and iron were synthesized and were optimized for polymerization of ethylene, separately. A mixture of the catalysts at three different Ni:Fe weight ratios 50:50, 70:30 and 30:70 were used...
Synthesis of LDPE Using Pyridineimine-Based Nickel -II- Bromide Complexes: Effect of Catalyst Bulkiness on Thermal, Structural, and Morphological Properties
and used for polymerization of ethylene in the presence of modified methylaluminoxane as cocatalyst. The produced low density polyethylenes show at least 21 branches per 1000 carbon atoms with Mv values up to 80.0 × 104 n, n = 1–4-. Aldimino-based catalyst...
Ethylene polymerization using flourinated FI Zr-based catalyst
A fluorinated FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′-flouroanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. It was revealed that ortho-F-substituted phenyl ring on the N electronically...
Homogeneous Polymerization of Ethylen Using an Iron - Based MetalCattalyst System
Homogeneous Polymerization of Ethylen Using an Iron - Based MetalCattalyst System
Study on single and binary catalytic systems of pyridine-imine catalysts based on nickel and iron in synthesis of reactor blends and low-density polyethylene nanocomposites
ABSTRACT: In the presence of modified methylaluminoxane as cocatalyst, the behavior of a binary catalytic system based on pyridineimine nickel -N- and iron -F- catalysts was evaluated in order to reach a proper mixture of polyethylene -PE-. A...
Comparison of copolymerization and terpolymerization with (Ind)2ZrCl2 metallocene catalyst
Bis(indneyl)zirconium dichloride, (Ind)2ZrCl2 catalyst was synthesized and used.......
Studied on promoted precipitated iron Fischer-Tropsch catalyst
The precipitated hematite and magnetite phases of iron promoted with colloidal silica, Cu, Ce or Sr were prepared. Physiochemical characteristics and catalytic performance of the catalysts assessed and optimum loading of promoters obtained...
In-situ silica supported Bis(2R-Ind)Zrcl2 (R:H,Ph) catalyst for ethylene polymerization
BisIndZrCl2 and its 2-Phenyl substituted relative were supported on silica by in-situ impregnation technique and used for ethylene polymerization. The second catalyst showed lower activity than first catalyst. In the polymerization stage...