Ethylene oligomerization using nickel-β-diimine hybrid xerogels produced by the sol–gel process

Ethene oligomerization on nickel microporous and mesoporous-supported catalysts: Investigation of the active sites

“…on silica [103] and MCM-41 [104] with the aim to heterogenize these homogeneous ethene dimerization catalysts. Both the homogeneous and heterogeneous complexes were tested under identical reaction conditions, in batch mode in toluene at 10 °C and 15 bar Pethene using alkylaluminum cocatalyst to start the reaction.…”

Simple Preparation of Halogen-Substituted <i>α</i>-Diimine Nickel Complexes Immobilized into Clay Interlayer as Catalysts for Ethylene Oligo-/Polymerization

“…Although homogeneous catalysts contain uniform and well-defined active sites, there are some drawbacks when these catalysts were used for industrial applications, especially the difficulty in separating the catalysts, products, and solvent [23] [24]. To apply the metal complexes for practical use in the polyolefin production, the complexes are commonly heterogenized by supporting these on solid carriers, which can be used in the slurry and gas-phase processes.…”

Organophilization of Muscovite Mica for the Synthesis of High Molar Mass/Branched‐Polyethylene Blend Nanocomposites

“…1.20 g of NiCl 2 · 6H 2 O (5.05 mmol) was added and the reaction was refluxed for another 2 h and was left overnight. After cooling to room temperature a yellow precipitate was filtered, washed with 10 ml of methanol, transferred to flask and dried in vacuum (oil pump) for 3 h at 70 °C (Figure ) …”