Results 51 to 60 of about 84,237 (324)

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

Carbon nitride supported Fe2 cluster catalysts with superior performance for alkene epoxidation

open access: yesNature Communications, 2018
Sub-nano metal clusters often exhibit unique and unexpected properties, which make them particularly attractive as catalysts. Herein, we report a “precursor-preselected” wet-chemistry strategy to synthesize highly dispersed Fe2 clusters that are ...
Shubo Tian   +15 more
semanticscholar   +1 more source

Epoxidation of Kraft Lignin as a Tool for Improving the Mechanical Properties of Epoxy Adhesive

open access: yesMolecules, 2020
Owing to its chemical structure, wide availability and renewable nature, lignin is a promising candidate for the partial replacement of fossil-based raw material in the synthesis of epoxy resins.
J. R. Gouveia   +4 more
semanticscholar   +1 more source

(Poly)Borylated Species as Modern Reactive Groups toward Unusual Synthetic Applications

open access: yesAngewandte Chemie, EarlyView.
In this review, we spotlight recent breakthroughs in α‐polyboron‐substituted carbon‐centered intermediates (carbanion, carbocation, radical, and carbene) and polyborylated alkenes. By bridging fundamental reactivity with the application potential of these extraordinary species, we hope this review will serve as a roadmap for harnessing these unique ...
Nadim Eghbarieh   +5 more
wiley   +2 more sources

Epoxidation of Terminalia catappa L. Seed oil: Optimization reaction

open access: yesSouth African Journal of Chemical Engineering, 2023
Unsaturated fatty acids contained in vegetable oils can be used as a raw material to produce epoxy through epoxidation reactions. This study aims to obtain the optimum conditions for the epoxidation reaction of Terminalia catappa L. (local name “ketapang”
Erin Ryantin Gunawan   +4 more
doaj   +1 more source

Propylene Epoxidation using Molecular Oxygen over Copper- and Silver-Based Catalysts: A Review

open access: yes, 2020
Propylene oxide (PO) is a versatile chemical, mainly used in the synthesis of polyurethane plastics.
J. Teržan   +3 more
semanticscholar   +1 more source

Epoxidation of Methyl Esters as Valuable Biomolecules: Monitoring of Reaction

open access: yesMolecules, 2023
The paper is focused on the epoxidation of methyl esters prepared from oil crops with various profiles of higher fatty acids, especially unsaturated, which are mainly contained in the non-edible linseed and Camelina sativa oil (second generation).
Martin Hájek   +4 more
doaj   +1 more source

Polyoxometalate (POM)-layered double hydroxides (LDH) composite materials: design and catalytic applications [PDF]

open access: yes, 2017
Layered double hydroxides (LDHs) are an important large class of two-dimensional (2D) anionic lamellar materials that possess flexible modular structure, facile exchangeability of inter-lamellar guest anions and uniform distribution of metal cations in ...
Li, Tengfei   +2 more
core   +1 more source

Cooperative Effects between Hydrophilic Pores and Solvents: Catalytic Consequences of Hydrogen Bonding on Alkene Epoxidation in Zeolites.

open access: yesJournal of the American Chemical Society, 2019
Hydrophobic voids within titanium silicates have long been considered necessary to achieve high rates and selectivities for alkene epoxidations with H2O2. The catalytic consequences of silanol groups and their stabilization of hydrogen-bonded networks of
Daniel T. Bregante   +8 more
semanticscholar   +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

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