Results 81 to 90 of about 157,527 (353)

Configurational and Vibrational Entropy in Hydrogen-bonded Fluids [PDF]

arXiv, 2023
The thermodynamics of liquids and supercritical fluids is notorious for eluding a general theory, as can be done for crystalline solids on the basis of phonons and crystal symmetry. The extension of solid state notions such as configurational entropy and phonons to the liquid state remains an intriguing but challenging topic.
arxiv  

Hydrodynamic anomalies in supercritical fluid [PDF]

J. Chem. Phys. 141, 124509 (2014), 2014
Using the molecular dynamics simulations we investigate properties of velocity autocorrelation function of Lennard-Jones fluid at long and intermediate time scales in wide ranges of temperature and density. We show that the amplitudes of the leading and subleading VAF time asymptotes, $a_1$ and $a_2$, show essentially non monotonous temperature and ...
arxiv   +1 more source

Chiral Cobaltabis(dicarbollide) Catalysts Prepared Using a Silica Helical Nanoplatform for the Enantioselective Photooxidation of Aromatic Secondary Alcohols

Chemistry – A European Journal, EarlyView.
Chiral COSAN Nanocatalysts: Enantiopure silica COSAN‐Hybrid nanohelices have been prepared by electrostatic co‐assembly of achiral COSAN anions and silica hybrid nanohelices. Their optical activity was confirmed by CD and ROA measurements. These COSAN‐Hybrids are efficient and recoverable catalysts in the photooxidative kinetic resolution of aromatic ...
Hao Wang, Emilie Pouget, Estelle Morvan, Sonia Buffière, Nicolas Daugey, Yann Danten, Thierry Buffeteau, Reiko Oda, Sylvain Nlate   +8 more
wiley   +1 more source

Purely predictive method for density, compressibility, and expansivity for hydrocarbon mixtures and diesel and jet fuels up to high temperatures and pressures [PDF]

, 2019
This study presents a pseudo-component method using the Perturbed-Chain Statistical Associating Fluid Theory to predict density, isothermal compressibility, and the volumetric thermal expansion coefficient (expansivity) of hydrocarbon mixtures and diesel
Bamgbade, B., Gavaises, M., Gupta, A., McHugh, M. A., Moore, J., Rokni, H.   +5 more
core   +1 more source

Essential Oils from Humulus Lupulus scCO₂ Extract by Hydrodistillation and Microwave-Assisted Hydrodistillation

Molecules, 2018
Two different extraction methods were used for a comparative study of essential oils obtained from the Humulus lupulus scCO2 (sc-supercritical) extract: microwave-assisted hydrodistillation (MAHD) and conventional hydrodistillation (HD). As a result, the
Katarzyna Tyśkiewicz, Roman Gieysztor, Marcin Konkol, Jan Szałas, Edward Rój   +4 more
doaj   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Nutritional value of cruciferous oilseed crops in relation to profile of accumulated biomolecules with especial regard to glucosinolates transformation products [PDF]

, 2007
Cruciferous oilseed crops accumulate relatively high concentrations of nutritional high quality oil and proteins in their seeds. In addition to these major seed components, their co-occurrence with high concentrations of dietary fibre (DF) and various ...
Bellostas, Natalia, Bjergegaard, Charlotte, Jensen, Søren K., Sørensen, Hilmer, Sørensen, Jens C., Sørensen, Susanne   +5 more
core  

Kinetic study of pilot-scale supercritical CO2 extraction of rosemary (Rosmarinus officinalis) leaves [PDF]

, 2011
NOTICE: This is the author’s version of a work that was accepted for publication in Journal of Supercritical Fluids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality ...
Fornari, Tiziana, García-Risco, Mónica, Hernández, Elvis J., Reglero, Guillermo, Señoráns Rodríguez, Francisco Javier, Vicente, Gonzalo   +5 more
core   +2 more sources

Chirale stationäre Phasen mit (+)-(R)-N-(1-Phenylethyl)-N?-[3-(diethoxymethylsilyl)propyl]harnstoff für die direkte Enantiomerentrennung mit Kapillargaschromatographie und überkritischer Fluidchromatographie

CHIMIA, 1991
Five different polymer stationary phases with (+)-(R)-N-(1-phenylethyl)-N?-[3-(diethoxymethylsilyl)propyl]urea as the chiral selector have been synthesized and tested for direct enantiomer separation in capillary gas and supercritical fluid ...
André Marti, Peter Krähenbühl, René Brügger, Hans Arm   +3 more
doaj   +2 more sources

Supercritical fluid chromatography coupled to mass spectrometry for lipidomics.

Journal of Mass Spectrometry, 2019
Supercritical fluid chromatography (SFC) has experienced a particular revival in recent years thanks to the development of robust and efficient commercial systems.
Céline Chollet, Stéphanie Boutet‐Mercey, L. Laurent, Carlos Rincón, M. Méjean, J. Jouhet, F. Fenaille, B. Colsch, D. Touboul   +8 more
semanticscholar   +1 more source