Results 161 to 170 of about 70,616 (210)

Supercritical CO2-assisted electrospinning

The Journal of Supercritical Fluids, 2004
Polymer fibers of high molecular weight polydimethylsiloxane (PDMS) and poly (d,l-lactic acid) (PLA) were produced using only electrostatic forces and without the use of a liquid solvent. The fibers were formed between two electrodes in a high-pressure view cell.
Natalia Levit, Gary Tepper
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Supercritical CO2 fractionation of jasmine concrete

The Journal of Supercritical Fluids, 1995
Abstract Jasmine fragrance is usually produced by hexane extraction. The extraction product called a “concrete,” undergoes further processing to separate fragrance compounds from undesired coextractives such as paraffins and fatty acid methyl esters. This study reports supercritical CO 2 fractionation of jasmine concrete to avoid thermal degradation
REVERCHON, Ernesto, DELLA PORTA, Giovanna, Gorgoglione D.   +2 more
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Materials Performance in CO2 and Supercritical CO2

2020
Past and current gas-cooled nuclear reactors rely on CO2-rich gases as a coolant to transfer heat from the reactor core, while future reactors may utilize a supercritical CO2 Brayton cycle for power production. The alloys used to construct these systems can experience serious corrosion issues induced by CO2 in the high temperature portions of the ...
Oleksak, Richard, Rouillard, Fabien
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Rose concrete fractionation by supercritical CO2

The Journal of Supercritical Fluids, 1996
Abstract Supercritical CO2 extraction was used to post-process a solid rose extract produced by liquid solvent extraction. Single step supercritical extraction at 80 bar, 40 °C, and a two-stage separation procedure at 80 bar and −16 °C and at 15 bar and 0 °C, were the optimum process conditions to produce a volatile rose oil with an overall 2-phenyl ...
REVERCHON, Ernesto, DELLA PORTA, Giovanna   +1 more
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Corrosion Testing in Supercritical CO2

CORROSION 2020, 2020
Abstract Carbon capture and storage or carbon capture and utilisation (CCS or CCU) are being considered in order to facilitate the extended use of both fossil-fuel power stations and high carbon dioxide (CO2) emitting industrial facilities such as steel, cement and petrochemical plants.
David Smyth-Boyle, Shiladitya Paul
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Extractive fermentation of aroma with supercritical CO2

Biotechnology and Bioengineering, 1999
This work deals with the feasibility of achieving an extractive fermentation of 2-phenylethyl alcohol, the rose aroma, coupling fermentation with Kluyveromyces marxianus and supercritical carbon dioxide (SCCO2) extraction. The extractive process is, in this case, of special interest due to the strong yeast inhibition by 2-phenylethyl alcohol.
, Fabre, , Condoret, , Marty
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Use of supercritical CO2 for bone delipidation

Biomaterials, 1994
Supercritical carbon dioxide was used for bone delipidation. It appeared that this technology is very efficient since supercritical CO2 is able to diffuse into microporous solids much better than liquids and that it has a good solvent capacity for lipids.
J, Fages, A, Marty, C, Delga, J S, Condoret, D, Combes, P, Frayssinet   +5 more
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Ionic Liquids and Supercritical Co2

2003
Although ionic liquids (ILs) are organic solvents, They exhibit vanishing small vapour pressures [1,2]. Negligible volatility means that the most prevalent route for escape to the atmosphere and also exposure to workers — evaporation — is absent. Low vapour pressure may also renders these solvents safer, as flash points will be much higher than for ...
Lynnette A. Blanchard, Zhiyong Gu, Joan F. Brennecke, Eric J. Beckman   +3 more
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Fluorinated surfactants in supercritical CO2

Current Opinion in Colloid & Interface Science, 2003
Abstract Liquid or supercritical carbon dioxide has important environmental and economic advantages over petrochemical solvents currently used for industrial processes. However, low solubility in CO2, particularly of polar compounds, is a hurdle to its implementation as an acceptable alternative.
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Supercritical CO2 as a refrigerant

The present deliverable documents the achievement of Task 10.4 towards a universal adoption of natural refrigerants for future generations of detectors, covering in particular situations where water or boiling CO2 flows cannot be used. The programme announced in the submitted proposal has been extended thanks to synergies with internal funds to the ...
Contiero, L, Pedano Medina, C.R
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