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
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
High Vacuum Deposition of Biferrocene Thin Films on Room Temperature Substrates [PDF]
, 2017 : Metallocenes are a promising candidate for future spintronic devices due to their versatile and tunable magnetic properties. However, single metallocenes, e.g., ferrocene, sublimate below room temperature, and therefore the implementation for future ...
Albrecht, Tim +8 more
core +3 more sources
Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation [PDF]
, 1997 Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities.
Meier, G.B. +5 more
core +2 more sources
Potassium-mediated zincation of ferrocene and ruthenocene : potassium, the architect behind supramolecular structural variations [PDF]
, 2010 Direct zincation of ferrocene and ruthenocene by the synergic base [PMDETA.K(μ-TMP)(μ-Me)Zn(Me)] produces the monozincated complexes [{PMDETA.K(μ-Me)2Zn(Fc)}∞] and [{PMDETA.K(μ-Me)2Zn(Rc)}2] respectively, having similar monomeric (dinuclear) units but ...
Alan R. Kennedy +32 more
core +1 more source
ChemistryOpen, 2019 Active species for synthetic and catalytic applications are formed from well defined complexes or mixtures of compounds. For group 4 metallocenes, three pathways for the formation of the reactive complex fragment [Cp′2M] are known: (i) reductive mixtures
Prof. Dr. Uwe Rosenthal
doaj +1 more source
UHMWPE/SBA-15 nanocomposites synthesized by in situ polymerization [PDF]
, 2016 Different nanocomposites have been attained by in situ polymerization based on ultra-high molecular weight polyethylene (UHMWPE) and mesoporous SBA-15, this silica being used for immobilization of the FI catalyst bis [N-(3-tert-butylsalicylidene)-2,3,4,
Adewole +60 more
core +3 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
doaj +1 more source
Selective ethylene trimerization by titanium complexes bearing phenoxy-imine ligands: NMR and EPR Spectroscopic studies of the reaction intermediates [PDF]
, 2014 The catalyst systems (FI)TiCl₃/MAO (FI = phenoxyimine ligand with an additional aryl–O–CH₃ donor) display exceptionally high activity in selective ethylene trimerization.
Bryliakov, Konstantin P. +8 more
core +1 more source
Preparation and Reactivity of Anionic Iron Sandwich Complex Bearing π-Phenol Ligand Acting as Proton-Coupled Electron Transfer Reagent. [PDF]
Chem Asian JAnionic Fe(I) sandwich complex bearing a π‐phenol ligand with a trifluoroborate substituent with an effective O−H bond dissociation free energy at 40.7 kcal/mol in tetrahydrofuran is prepared, which acts as a proton‐coupled electron transfer reagent for the reduction of organic substrates as well as a Mo(IV) nitride complex, leading to the formation of
Tanabe Y +3 more
europepmc +2 more sources