Molecules, 2011 This research aimed to investigate the copolymerization of ethylene and various 1-olefins. The comonomer lengths were varied from 1-hexene (1-C6) up to 1-octadecene (1-C18) in order to study the effect of comonomer chain length on the activity and ...
Mingkwan Wannaborworn +2 more
doaj +1 more source
Thermally Stable, Latent Olefin Metathesis Catalysts [PDF]
, 2011 Highly thermally stable N-aryl, N-alkyl N-heterocyclic carbene (NHC) ruthenium catalysts were designed and synthesized for latent olefin metathesis. These catalysts showed excellent latent behavior toward metathesis reactions, whereby the complexes were ...
Fedorov, Alexey +3 more
core +3 more sources
A Generalized Framework for Data‐Efficient and Extrapolative Materials Discovery for Gas Separation
Advanced Intelligent Discovery, EarlyView.This study introduces an iterative supervised machine learning framework for metal‐organic framework (MOF) discovery. The approach identifies over 97% of the best performing candidates while using less than 10% of available data. It generalizes across diverse MOF databases and gas separation scenarios.
Varad Daoo, Jayant K. Singh
wiley +1 more source
Synthesis of a Molecular Charm Bracelet via Click Cyclization and Olefin Metathesis Clipping [PDF]
, 2010 We describe the synthesis of a polycatenated cyclic polymer, a structure that resembles a molecular charm bracelet. Ruthenium-catalyzed ring-opening metathesis polymerization of an aminocontaining cyclic olefin monomer in the presence of a chain ...
Chan, Wing Yan +4 more
core +2 more sources
Cationic Alkylaluminum-Complexed Zirconocene Hydrides: NMR-Spectroscopic Identification, Crystallographic Structure Determination, and Interconversion with Other Zirconocene Cations [PDF]
, 2011 The ansa-zirconocene complex rac-Me_2Si(1-indenyl)_2ZrCl_2 ((SBI)ZrCl_2) reacts with diisobutylaluminum hydride and trityl tetrakis(perfluorophenyl)borate in hydrocarbon solutions to give the cation [(SBI)Zr(μ-H)_3(Al^iBu_2)_2]^+, the identity of which ...
Baldwin, Steven M. +4 more
core +1 more source
Protonolysis of a Ruthenium–Carbene Bond and Applications in Olefin Metathesis [PDF]
, 2011 The synthesis of a ruthenium complex containing an N-heterocylic carbene (NHC) and a mesoionic carbene (MIC) is described wherein addition of a Brønsted acid results in protonolysis of the Ru–MIC bond to generate an extremely active metathesis catalyst ...
Bertrand, Guy +3 more
core +3 more sources
Hecheng xiangjiao gongyeWith the widespread application of conjugated dienes, there were higher requirements for the performance of poly(conjugated dienes) rubber. By adjusting polymerization pathway, specific polymer chain structures could be obtained to meet diverse ...
YOU Jing-yu, GONG Di-rong
doaj +1 more source
Vinylic Addition Polynorbornene in Catalysis [PDF]
, 2019 Vinylic addition polynorbornenes (VA-PNB) result from the insertion polymerization of norbornene or specific norbornene derivatives catalyzed by transition metal com- plexes. The VA-PNB skeleton is completely aliphatic and keeps the bicyclic structure of
Albéniz Jiménez, Ana Carmen +1 more
core +2 more sources
Periodic current oscillations of zinc in nitric acid solutions [PDF]
Journal of the Serbian Chemical Society, 2008 The charge percolation mechanism (CPM) of olefin polymerization in the presence of transition metal compounds has been applied to explain the polymerization of ethylene by silica supported chromium oxide.
ERVIN SALLÓ, FLORIN CRISAN
doaj
Modeling a Fluidized-Bed Reactor for the Catalytic Polymerization ff Ethylene: Particle Size Distribution Effects [PDF]
, 2005 Particle size distributions in the output stream of commercial, fluidized-bed reactors for ethylene polymerization are analyzed using a mathematical model.
Chiovetta, Mario Gabriel, Grosso, Walter
core