Synthesis of (Ind)2ZrCl2 Catalyst for Copolymerization of Ethylene and Propylene: Parameters Effect on Productivity [PDF]
علوم و تکنولوژی پلیمر, 2010 Bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. Polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. Ethylene propylene (P/
S. Ahmadjo +4 more
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Direct protonation of the W–H bonds of Bis(pentamethylcyclopentadienyl)tungsten dihydride [PDF]
, 1989 Protonation of (C_5Me_5)_2 WH_2 to give [(C_5Me_5)_2WH_3]+ is proposed to occur by attack at both W–H bonds rather than by direct attack at the d^2 metal ...
Bercaw, John E., Parkin, Gerard
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Tuning the electrical conductivity of nanotube-encapsulated metallocene wires
, 2006 We analyze a new family of carbon nanotube-based molecular wires, formed by encapsulating metallocene molecules inside the nanotubes. Our simulations, that are based on a combination of non-equilibrium Green function techniques and density functional ...
A. R. Rocha +5 more
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Koordinationschemie Perhalogenierter Cyclopentadine und Alkine, XV [PDF]
, 1993 Coordination Chemistry of Perhalogenated Cyclopentadienes and Alkynes, XV[1]. - Systematic Generation of Fivefold Ring-Silylated Cyclopentadienyl Manganese Complexes from [C5Br5]Mn(CO)3.
Blake +12 more
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Electronic structure and magnetic properties of metallocene multiple-decker sandwich nanowires
, 2011 We present a study of the electronic and magnetic properties of the multiple-decker sandwich nanowires ($CP-M$) composed of cyclopentadienyl (CP) rings and 3d transition metal atoms (M=Ti to Ni) using first-principles techniques.
C. Morari +6 more
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Metallocene/carbon hybrids prepared by a solution process for supercapacitor applications [PDF]
, 2013 Efficient and scalable solution-based processes are not generally available to integrate well-studied pseudocapacitive materials (i.e., metal oxides and conducting polymers) with other components such as porous carbon, mainly because these classes of ...
Achilleos, Dimitra +4 more
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The charge percolation mechanism and simulation of Ziegler–Natta polymerizations Part III. Oxidation states of transition metals [PDF]
Journal of the Serbian Chemical Society, 2006 The oxidation state of the transition metal (Mt) active centre is the most disputable question in the polymerization of olefins by Ziegler–Natta (ZN) and metallocene complexes.
BRANKA PILIC +5 more
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Molecules, 2021 Homogeneous olefin polymerization catalysts are activated in situ with a co-catalyst ([PhN(Me)2-H]+[B(C6F5)4]− or [Ph3C]+[B(C6F5)4]−) in bulk polymerization media. These co-catalysts are insoluble in hydrocarbon solvents, requiring excess co-catalyst (>3
Hyun-Ju Lee +7 more
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Silicoaluminates as “support activator” systems in olefin polymerization processes [PDF]
, 2010 In this work we report the polymerization behaviour of natural clays (montmorillonites, MMT) as activating supports. These materials have been modified by treatment with different aluminium compounds in order to obtain enriched aluminium clays and to ...
Alba Carranza, María Dolores +4 more
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Materials Research, 2001 Polypropylene with special properties can be obtained by metallocenic catalysts. These catalytic systems represent the beginning of a new age in polyolefins technology. In this work, the influence of the addition of a syndiotactic polypropylene (s-PP) on
Maria de Fátima V. Marques +2 more
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