Results 31 to 40 of about 387,390 (249)

Determination of morphine sulfate anti-pain drug solubility in supercritical CO2 with machine learning method

open access: yesScientific Reports
Accurate solute solubility measuring and modeling in supercritical carbon dioxide (ScCO2) would address the best working conditions and thermodynamic boundaries for material processing with this type of fluid.
Gholamhossein Sodeifian   +5 more
doaj   +1 more source

Supercritical fluids extraction of Ginkgo ginkgolides and flavonoids

open access: yes, 2014
This study investigated the feasibility of extracting three major terpene lactones and flavonoids from Ginkgo leaves by using supercritical carbon dioxide, nitrous oxide and R134a.
Cheng, Y.C.   +5 more
core   +1 more source

Polymeric Sorbents as Energy‐Efficient Alternative to Cryogenic Distillation for Light Hydrocarbon Purification

open access: yesAdvanced Materials, EarlyView.
The transition from cryogenic distillation to polymeric sorbents for light hydrocarbon purification is crucial for energy and environmental sustainability. The polymeric sorbents are engineered to separate gas mixtures based on their specific properties.
Kelechi Festus   +9 more
wiley   +1 more source

Thermodynamic modeling and solubility assessment of oxycodone hydrochloride in supercritical CO2: Semi-empirical, EoSs models and machine learning algorithms

open access: yesCase Studies in Thermal Engineering
In this study, the solubility of oxycodone hydrochloride (OXH) in supercritical carbon dioxide (SC–CO2) was investigated at various conditions, temperature (308–338 K) and pressure (120–270 bar), for the first time.
Gholamhossein Sodeifian   +3 more
doaj   +1 more source

Beyond Nanoporosity: A CO2‐Conditioned Glassy Matrix Contributes to the Brittle‐to‐Ductile Transition of Nanocellular Polyetherimide

open access: yesAdvanced Materials, EarlyView.
The mechanical performance of nanocellular polyetherimide cannot be explained by nanoporosity alone. It is shown that CO2 saturation and desorption leave a distinct mechanical signature in the glassy matrix before foaming. This matrix contribution provides a new route to understand and optimize the brittle to ductile transition in nanocellular polymers.
Félix Lizalde‐Arroyo   +7 more
wiley   +1 more source

Decoding Synergistic Pathways in Bimetallic MOFs for Advanced Oxidation Processes

open access: yesAdvanced Materials, EarlyView.
This review presents a unified framework linking metal pairing and framework design with electronic structure, redox cycling, oxidant activation, reactive‐species generation, and catalytic performance across photocatalytic and oxidant‐based BMOF‐AOPs. The resulting design principles guide the development of hydrolytically stable and efficient BMOFs for
Karim El‐Naggar   +2 more
wiley   +1 more source

Recent Applications of Supercritical Fluid Technology to Pharmaceutical Powder Systems

open access: yesKONA Powder and Particle Journal, 2014
The unique characteristics of supercritical fluids can be utilised to overcome the drawbacks associated with the conventional techniques for the generation of pharmaceutical powders.
Rana T. Bustami   +3 more
doaj   +1 more source

Caffeine Solubility In Supercritical Carbon Dioxide/co-solvent Mixtures

open access: yes, 2015
In order to assess the effect of co-solvents on the solubility of caffeine in supercritical carbon dioxide, experimental solubility of caffeine in supercritical ethanol-carbon dioxide and isopropanol-carbon dioxide mixed solvents was obtained using a ...
Kopcak U., Mohamed R.S.
core   +1 more source

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

open access: yesAdvanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski   +5 more
wiley   +1 more source

Underground hydrosphere and geofluids of the Earth’s crust and upper mantle

open access: yesГеофизический журнал, 2017
The physicochemical state of the water at various temperature and pressure conditions of the Earth’s interior has been characterized. Two groups of geofluidic systems for water have been established: subcritical (T < 374 ¸ 450 °Ñ) and supercritical (T >
A.V. Kudelsky
doaj   +1 more source

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