Results 1 to 10 of about 127,920 (167)

Amphiphilic Block Copolymer Micelles in Selective Solvents: The Effect of Solvent Selectivity on Micelle Formation. [PDF]

open access: yesPolymers (Basel), 2019
We investigated the micellar behavior of a series of asymmetric polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) block copolymers in different P4VP-selective alcoholic solvents. The micellar behavior was further correlated with the spectroscopic ellipsometry results obtained on swelling of PS and P4VP polymer films in the corresponding solvent ...
Kumar L   +5 more
europepmc   +4 more sources

Tuning the selectivity of nitrobenzene hydrogenation over Pd/CeO2 catalysts for azoxybenzene synthesis under solvent-free conditions

open access: yesCatalysis Communications, 2023
Precise control of selectivity in nitrobenzene hydrogenation is a long-standing challenge, especially under solvent-free conditions. The PdOx is the key species for enhancing H2 dissociation and nitrobenzene conversion.
Jiaben Wang   +11 more
doaj   +3 more sources

Matrix-Driven Modulation of Phenolic Profiles from Euterpe oleracea and Oenocarpus bacaba Using Natural Deep Eutectic Solvents [PDF]

open access: yesMolecules
This study investigated the influence of solvent composition on the extraction efficiency and selectivity of phenolic compounds from the Amazonian fruits açaí (Euterpe oleracea) and bacaba (Oenocarpus bacaba).
Saulo Victor e Silva   +8 more
doaj   +2 more sources

Comparison of selectivity of ethylene glycol synthesis and glyceraldehyde biomolecule through Formose reaction in water and methanol solvent [PDF]

open access: yesشیمی کاربردی روز, 2022
In the present paper, the Formose reaction to produce polyols in methanol solvent in the presence of an aerosil (fumed silica) catalyst is first investigated.
Arash Vojood   +4 more
doaj   +1 more source

Study of system properties in reversed-phase liquid chromatography for binary and ternary solvent mobile phase compositions using the solvation parameter model

open access: yesJournal of Chromatography Open, 2022
System maps for the individual system constant of the solvation parameter model and five binary solvent containing 20–70% (v/v) acetonitrile, acetone, methanol, 2-propanol, and tetrahydrofuran on a single octadecylsiloxane-bonded silica column (Luna C18)
Colin F. Poole, Sanka N. Atapattu
doaj   +1 more source

Liquid-Liquid Extraction in a Microextractor: A Laboratory Examination and Thermodynamic Modeling of N-Hexane + Benzene + Sulfolane System [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
This study aimed at investigating liquid-liquid extraction of the three-component n-hexane + benzene + sulfolane system in a micro extractor. Experiments were carried out in a microtube with a diameter of 800μm using a T-shaped micromixer at a residence ...
Majid Mohadesi   +2 more
doaj   +1 more source

How solvent determines the molecular reactive conformation and the selectivity: Solvation spheres and energy

open access: yesFrontiers in Chemistry, 2022
In solution, the solvent determines the molecular conformation and the chemical reaction viability and selectivity. When solvent-solute and solvent-solvent interactions present similar strengths, explicit salvation is the best way to describe a system ...
Joseelyne Hernández-Lima   +5 more
doaj   +1 more source

A selective Oxidation of Sulfides with Hydrogen peroxide in the Presence of New o-Aminophenol Molybdenum Complex : Sulfoxide vs. sufones [PDF]

open access: yesشیمی کاربردی روز, 2022
An efficient and eco-compatible route for the selective oxidation of a variety of sulfides to the corresponding sulfones with 30% aqueous H2O2 as an oxidant and a molybdenum complex as a catalyst, is described. This new o-aminophenol based oxo-molybdenum
Elham Safaei, Zahra Alaji
doaj   +1 more source

Solvent Effect on Product Distribution in the Aerobic Autoxidation of 2-Ethylhexanal: Critical Role of Polarity

open access: yesFrontiers in Chemistry, 2022
In the aerobic oxidation of aldehydes to acids, how the solvent affect the reaction remains unclear. Herein, the solvent effect in the oxidation of 2-ethylhexanal (2-ETH) to 2-ethylhexanoic acid (2-ETA) was systematically investigated.
Zheng Wang   +7 more
doaj   +1 more source

Solvent-Induced Selectivity of Isoprene From Bio-Derived Prenol

open access: yesFrontiers in Chemistry, 2022
In this work we demonstrate the selective catalytic conversion of prenol, which is an allylic alcohol that can be prepared from renewable resources to isoprene.
Jotheeswari Kothandaraman   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy