Results 31 to 40 of about 41,666 (217)

Cloisite 15Aº nanoclay as an effective PTC for the epoxidation of hydroxyl terminated polybutadiene (HTPB)

open access: yesPolímeros, 2014
A simple method is reported for the epoxidation of hydroxyl-terminated polybutadiene (HTPB) by using in-situ generated dimethyl dioxirane (DMD) as an oxidant and Cloisite 15Aº nanoclay as a phase-transfer catalyst (PTC).
Mir Mohammad Alavi Nikje   +1 more
doaj   +1 more source

Engineering Collariella virescens Peroxygenase for Epoxides Production from Vegetable Oil

open access: yesAntioxidants, 2022
Vegetable oils are valuable renewable resources for the production of bio-based chemicals and intermediates, including reactive epoxides of industrial interest.
Dolores Linde   +5 more
doaj   +1 more source

Epoxidation of Strained Alkenes Catalysed by (1,2-dimethyl-4(1H)pyridinone-3-olate)2MnIIICl [PDF]

open access: yes, 2015
The mild epoxidation of strained alkenes using (DMPO)2MnCl catalyst (DMPO = 1,2-dimethyl-4(1H)-pyridinone-3-olate) in the presence of various oxidants was studied.
Robinson-Miller, Adam   +2 more
core   +1 more source

Kinetics of the Epoxidation of Geraniol and Model Systems by Dimethyldioxirane

open access: yesMolecules, 2004
The mono-epoxidation of geraniol by dimethyldioxirane was carried out invarious solvents. In all cases, the product ratios for the 2,3 and 6,7 mono-epoxides werein agreement with literature values.
B. S. Crow   +3 more
doaj   +1 more source

Amphiphilic peroxo polyoxometalate as reaction control phase transfer catalyst for efficient epoxidation of olefins

open access: yesMicro & Nano Letters, 2021
A peroxo polyoxometalate‐based catalyst was synthesized, characterized, and employed as a catalyst in the epoxidation of olefins with hydrogen peroxide (H2O2).
Jinghui Wu   +5 more
doaj   +1 more source

Asymmetric Epoxidation of Olefins with Sodium Percarbonate Catalyzed by Bis-amino-bis-pyridine Manganese Complexes

open access: yesMolecules, 2022
Asymmetric epoxidation of a series of olefinic substrates with sodium percarbonate oxidant in the presence of homogeneous catalysts based on Mn complexes with bis-amino-bis-pyridine ligands is reported.
Varvara A. Drozd   +2 more
doaj   +1 more source

Feasibility studies on Kinetics, thermodynamics, thermal analysis and physicochemical Characterization of Anacardium occidentale kernel oil methyl ester epoxidation-esterification, for use as bio-transformer fluid

open access: yesChemical Thermodynamics and Thermal Analysis, 2022
Epoxidation-esterification of fatty acid methyl ester obtained from Anacardium occidentale kernel oil (AOKO), its characterization, kinetics and thermodynamics were the main focus of this study.
Chinedu M. Agu   +3 more
doaj  

Ab-initio transport fingerprints for resonant scattering in graphene [PDF]

open access: yesPhys. Rev. B 86, 235417 (2012), 2012
We have recently shown that by using a scaling approach for randomly distributed topological defects in graphene, reliable estimates for transmission properties of macroscopic samples can be calculated based even on single-defect calculations [A. Uppstu et al., Phys. Rev. B 85, 041401 (2012)].
arxiv   +1 more source

Ca–Ag compounds in ethylene epoxidation reaction

open access: yesScience and Technology of Advanced Materials, 2019
The ethylene epoxidation is a challenging catalytic process, and development of active and selective catalyst requires profound understanding of its chemical behaviour under reaction conditions.
Iryna Antonyshyn   +8 more
doaj   +1 more source

Selective epoxidation of soybean oil with performic acid catalyzed by acidic ionic exchange resins

open access: yesGreen Processing and Synthesis, 2013
This work studied the epoxidation of soybean oil with aqueous hydrogen peroxide and formic acid, in the presence of acidic ionic exchange resins as catalysts.
Turco Rosa   +5 more
doaj   +1 more source

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