Results 171 to 180 of about 9,566 (219)

Flow regimes in centrifugal partition chromatography

AIChE Journal, 1998
AbstractModeling pressure drop, stationary‐phase holdup and separation efficiency in centrifugal partition chromatography (CPC) are hampered by restricted knowledge concerning the flow behavior of the liquid‐liquid two‐phase system. A transparent column (type CPC‐LLN) was constructed to determine the flow behavior as a function of the flow rate ...
M. J. van Buel, F. E. D. van Halsema, L. A. M. van der Wielen, K. Ch. A. M. Luyben   +3 more
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Centrifugal Partition Chromatography. I. General Features

Journal of Liquid Chromatography, 1988
Abstract Centrifugal Partition Chromatography (CPC) is a variant of countercurrent chromatography (CCC). As in CCC, two immiscible liquids are used. The first liquid is the stationary phase, the second is the mobile phase. The liquid stationary phase is held in channels engraved in several polychlorotrifluoroethylene (PCTFE) plates.
Alain Berthod, Daniel W. Armstrong
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Pressure drop in centrifugal partition chromatography

Journal of Chromatography A, 1997
Abstract Centrifugal partition chromatography (CPC) is more and more becoming a valuable alternative for conventional preparative chromatographic processes. Pressure drop is one of the main limitations hampering optimum performance of a CPC. A model is presented for the pressure drop over a CPC column. The pressure drop consists of two contributions:
Michel J van Buel, Luuk A.M van der Wielen, Karel Ch.A.M Luyben   +2 more
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Centrifugal Partition Chromatography. vi. Temperature Effects

Journal of Liquid Chromatography, 1988
Abstract Temperature changes induce numerous physico-chemical changes in liquids. Vapor pressure, density, refractive index, viscosity and surface tension are such temperature dependent parameters. The mutual solubilities of the stationary and mobile phase liquids are also temperature dependent.
Alain Berthod, Daniel W. Armstrong
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Hydrodynamics of Centrifugal Partition Chromatography

1993
The hydrodynamics of Centrifugal Partition Chromatography (CPC), an interesting analytical and preparative scale separation technique, are being investigated for modelling and scale-up. The influences of input variables on hold-up and pressure drop have been measured with an analytical scale CP-chromatograph; a preliminary overview of the first results
R. Meester, M. J. van Buel, L. A. M. van der Wielen, R. Verpoorte, K. Ch. A. M. Luyben   +4 more
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Methodology for optimally sized centrifugal partition chromatography columns

Journal of Chromatography A, 2015
Centrifugal Partition Chromatography (CPC) is a separation process based on the partitioning of solutes between two partially miscible liquid phases. There is no solid support for the stationary phase. The centrifugal acceleration is responsible for both stationary phase retention and mobile phase dispersion.
Chollet, Sébastien, Marchal, Luc, Meucci, Jérémy, Renault, Jean-Hugues, Legrand, Jack, Foucault, Alain   +5 more
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Theoretical study of sequential centrifugal partition chromatography

AIChE Journal, 2012
Sequential centrifugal partition chromatography (sCPC) is a novel cyclic liquid–liquid chromatographic process. Each cycle comprises two steps, which differ by the liquid phase used as a mobile phase (upper or lower phase) and its flow direction. The feed is continuously separated into two product streams, which are collected alternately.
Johannes Völkl, Wolfgang Arlt, Mirjana Minceva   +2 more
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ChemInform Abstract: Countercurrent Chromatography or Centrifugal Partition Chromatography

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Effluent concentration profiles in centrifugal partition chromatography

AIChE Journal, 1997
AbstractCentrifugal partition chromatography (CPC) is a relatively new preparative chromatographic technique. To understand, predict, and optimize CPC separations a model is needed, describing the effluent concentration profile as a function of the phenomena that determine the separation efficiency (mass transfer, mixing, and partitioning).
M. J. van Buel, L. A. M. van der Wielen, K. Ch. A. M. Luyben   +2 more
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Modelling gradient elution in centrifugal partition chromatography

Journal of Chromatography A, 1997
Varying the phase composition of a multi-component two-phase system during a centrifugal partition chromatography (CPC) separation leads to additional degrees of freedom to influence the separation efficiency and total separation time. Optimisation of a CPC (gradient) separation is a difficult task due to the large number of two-phase systems and the ...
Michel J van Buel, Luuk A.M van der Wielen, Karel Ch.A.M Luyben   +2 more
openaire   +1 more source