Results 71 to 80 of about 6,221 (196)

Electrochemistry in supercritical fluids

, 2015
A wide range of supercritical fluids (SCFs) have been studied as solvents for electrochemistry with carbon dioxide and hydrofluorocarbons (HFCs) being the most extensively studied.
Bartlett, Philip N., Branch, Jack A.
core   +1 more source

Polyethylene Melt Rupture and Slip in Simple Shear: A Visual and Mechanistic Study

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
Slip velocity transient curve (left) with images of the specimen at different times during a simple shear experiment. On the right, schematics illustrate the sample and its side view before and after simple shear. ABSTRACT Melt rupture of a bimodal molecular weight distribution polyethylene is studied under simple shear via flow visualization ...
Mohammadali Sattari, Y. W. Inn, Paula M. Wood‐Adams   +2 more
wiley   +1 more source

Morphology control of clay-mineral particles as supports for metallocene catalysts in propylene polymerization [PDF]

Polyolefins Journal, 2016
Spray dry granulation of clay minerals was studied to obtain clay mineral base support material for metallocene supported olefin polymerization catalysts.
Takao Tayano, Takehiro Sagae, Takashi Atsumi, Hideshi Uchino, Masahide Murata, Tsutomu Sato   +5 more
doaj   +1 more source

«Host-guest» complexing of double-walled carbon nanotube with metallocenes

Хімія, фізика та технологія поверхні, 2016
Complex compounds of various types and nature have been widely applied in many fields of science and technology. Complex aggregates based on nanostructures such as nanotubes and other coordination compounds, for example, metallocenes, have unique ...
O. V. Mykhailenko
doaj   +1 more source

Preparation and Reactivity of Anionic Iron Sandwich Complex Bearing π‐Phenol Ligand Acting as Proton‐Coupled Electron Transfer Reagent

Chemistry – An Asian Journal, Volume 21, Issue 1, January 2026.
Anionic 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
Yoshiaki Tanabe, Soma Yamamoto, Shogo Kuriyama, Yoshiaki Nishibayashi   +3 more
wiley   +1 more source

Triaminoalkenes Derived from Cyclic (Alkyl)(amino)carbenes with a 1,1′‐Ferrocenylene Backbone and N‐Heterocyclic Carbenes: fcCAAC–NHC Heterodimers

ChemistryOpen
The study addresses triaminoalkenes derived from [3]ferrocenophane‐type cyclic (alkyl)(amino)carbenes (fcCAACs) fc(CPh2CNR) (fc = 1,1′‐ferrocenylene) and N‐heterocyclic carbenes (NHCs). Stable target compounds are obtained in good yields as crystalline
Suman Yadav, Clemens Bruhn, Clemens Lücke, Richard Rudolf, Tabea Pfister, Biprajit Sarkar, Ulrich Siemeling   +6 more
doaj   +1 more source

Alargamento da distribuição de massa molar de polímeros sintetizados com catalisadores metalocênicos dual-site Broadening of molecular weight distribution of polymers synthesized by metallocene-based dual-site catalysts

Química Nova, 2008
The main topics related to the use of dual-site catalysts in the production of polymers with broad molecular weight distribution are reviewed. The polymerization using dual-site catalysts is more economical and allows to produce a higher quality product ...
João H. Z. dos Santos, Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi   +3 more
doaj   +1 more source

Discovery and development of metallocene-based polyolefins with special properties [PDF]

Polyolefins Journal, 2015
Beside Ziegler-Natta and Phillips catalysts the development of methylaluminoxane (MAO) as cocatalyst in combination with metallocenes or other transition metal complexes for the polymerization of olefins has widely increased the possibilities in ...
Walter Kaminsky, Mercia Fernandes
doaj   +1 more source

Dialkyl dicyanofumarates and dicyanomaleates as versatile building blocks for synthetic organic chemistry and mechanistic studies

Beilstein Journal of Organic Chemistry, 2017
The scope of applications of dialkyl dicyanofumarates and maleates as highly functionalized electron-deficient dipolarophiles, dienophiles and Michael acceptors is summarized.
Grzegorz Mlostoń, Heinz Heimgartner
doaj   +1 more source

Catalisadores metalocênicos suportados para a produção de poliolefinas: revisão das estratégias de imobilização

Química Nova, 2011
The inadequacy of strategies used for the heterogeneization of metallocene catalysts is pointed out as one of the main causes of the lack of industrial employability of such polymerization catalysts.
Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi, João H. Z. dos Santos   +3 more
doaj   +1 more source