Results 31 to 40 of about 4,945 (173)
Modeling of metallocene catalyzed propylene polymerization in fluidized bed reactors [PDF]
MATEC Web of Conferences, 2019 A study was performed to improve the model for metallocene catalyzed polyolefin polymerization in fluidized bed reactor by adapting multi-scale modeling approach.
Law Chew-Sang, Hussain Mohd Azlan
doaj +1 more source
Nanomaterials, 2021 We have investigated the effects of temperature, diameter and metal catalyst type on the growth of inner nanotubes inside metallocene-filled single-walled carbon nanotubes (SWCNTs).
Marianna V. Kharlamova +1 more
doaj +1 more source
Adsorption of Metallocenes on Silica
Chemistry – A European Journal, 2016 AbstractThe adsorption of the metallocenes ferrocene, doubly deuterated ferrocene, cymantrene and nickelocene, as well as molybdenum hexacarbonyl, proceeds in the absence of a solvent. Large single pieces of silica gel were placed in contact with the solid metallocenes and the adsorption process was visualized on a macroscopic scale and the maximal ...
Kyle J, Cluff, Janet, Blümel
openaire +3 more sources
IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION [PDF]
Journal of Petroleum Science and Technology, 2014 Bis(2-R-ind)ZrCl2 (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization.
saeid ahmadjo +6 more
doaj +1 more source
Photoelectron spectra of metallocenes
Journal of Electron Spectroscopy and Related Phenomena, 1980 Abstract The He(II) spectra of the unsubstituted metallocenes {M(η-C5H5)2}, M V, Cr, Mn, Fe, Co, Ni and Ru, and of {Mn(η-C5H4Me)2} are reported; both He(I) and He(II) spectra of some decamethylmetallocenes {M(η-C5Me5)2}, where M Mg, V, Cr, Mn, Fe, Co and Ni, are also given.
Cauletti, C +6 more
openaire +2 more sources
A Borane Sandwich Analogue of Ferrocene
Angewandte Chemie, EarlyView.The first ferrocene analogue with two boron‐based ligands is identified through a global exploration of the FeB10H20 potential energy surface. The η5,η5‐Fe(B5H10)2 complex emerges as the global minimum, showing that metal coordination inverts borane stability and enables aromatic boron rings inaccessible in isolation.
Viviana Roman‐Ventura +8 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa +4 more
wiley +2 more sources
Photooxidation of Some Metallocenes in a Polymer Matrix
Molecules, 2005 The changes in the electronic absorption spectra (UV-Vis) of some metallocene-doped poly(methyl methacrylate) (PMMA) thin films containing chloroform molecules as impurities were studied after photoexcitation in the nitrogen atmosphere.
B. Mallik
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Angewandte Chemie, EarlyView.Masked divalent yttrium and gadolinium dinitrogen complexes mediate the fragmentation of white phosphorus, converting P4 into discrete dimetallic complexes of [P4]2– and [P2]2– ligands, and an unprecedented monatomic P2– radical ligand. Structural, spectroscopic, magnetic, and DFT studies reveal insight into the bonding between these unusual Pn units ...
Arpan Mondal, Richard A. Layfield
wiley +2 more sources
Group 14 Metallocene Catalysts for Carbonyl Hydroboration and Cyanosilylation
, 2023 A series of six Group 14 metallocene compounds (M = Ge, Sn, Pb) were studied as catalysts for carbonyl hydroboration and cyanosilylation reactions at room temperature.
Mallory, Fujiwara +2 more
core +1 more source