Results 91 to 100 of about 360,310 (205)

Styrene Polymerization with Group III Metallocenes: A Generative and Interpretable Catalyst Design Strategy Combining Density Functional Theory and Machine Learning

open access: yesChemistryEurope
The rational design of group III metallocene catalysts for styrene polymerization remains a complex challenge due to intertwined steric and electronic effects that govern monomer coordination and insertion. A generative and interpretable machine learning
Stella Christodoulou   +3 more
doaj   +1 more source

A study of copolymerization of 1-hexene with 2,5-norbornadiene using metallocene catalysts

open access: yes, 2004
Copolymerization of 1-hexene with a symmetrical diene, namely 2,5-norbornadiene was studied using four different metallocene catalysts. Copolymerization was found to occur exclusively through one of the two equally reactive endocyclic double bonds with ...
Sivaram, Swaminathan   +1 more
core   +1 more source

Sixtieth Anniversary of Ziegler-Natta Catalysts and Stereospecific Polymerization [PDF]

open access: yesKemija u Industriji, 2015
This review article highlights the history of the discoveries of organometallic catalysts and stereospecific polymerization of α-olefins, dienes and a number of vinyl monomers by Karl Ziegler and Giulio Natta sixty years ago, their developments and ...
Janović Z. , Veksli Z.
doaj  

Preparation of Dinuclear Metallocene Complexes for High-Performance Supported Catalyst

open access: yes, 2021
학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2021. 21. Introduction 1 2. Results and Discussion 2 2.1 Preparation of dinuclear ansa-metallocene complexes 2 2.2 Preparation of supported catalysts and ethylene polymerization 6 2.3 Characterization of polymers 11 3 ...
배성문
core  

Metallocene-catalyzed ethene polymerization : long-chain branched polyethene [PDF]

open access: yes, 2002
Long-chain branches and narrow molecular weight distribution is a novel structure combination in polyethene, which has only been possible to achieve with single-center catalysis.
Kokko, Esa
core   +1 more source

Solution isomerization of commercial C2-symmetric metallocene catalysts [PDF]

open access: yes, 2006
Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2006.This study concerns the investigation of the isomerization of different metallocene catalysts in solution, and the effects thereof on the microstructure of polypropylenes ...
Soltan, Omar
core  

28. Molecular Weight Distribution Control with Supported Metallocene Catalysts

open access: yes, 1994
Several kinds of supported Cp(2)MeCl(2) (Me = Ti, Zr, Ht) catalysts were prepared with three different SiO2-supports; i.e., SiO2/MAO, SiO2/Al(C2H5)(3) and SiO2/(C2H5)MgCl.
Ihm, Son-Ki   +5 more
core   +1 more source

Immobilized Bis-Indenyl Ligands for Stable and Cost-Effective Metallocene Catalysts of Hydrogenation and Polymerization Reactions [PDF]

open access: yes, 2012
Reactions of catalytic hydrogenations and polymerizations are widely used in industry for manufacture of fine chemicals, pharmaceuticals, and plastics.
Simerly, Thomas Max
core   +1 more source

Ferrocenyl Lawesson's reagent-based porous organic polymers for efficient adsorption-assisted photocatalysis degradation of organic dyes

open access: yesHeliyon
The adsorption process followed by photodegradation, adsorption-assisted photocatalysis, is an efficient way to achieve an enhanced overall removal of pollutants from wastewater.
Shadi Asgari   +5 more
doaj   +1 more source

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