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Phase-behavior of alkyl ketene dimmer (AKD) in supercritical carbon dioxide. The implications of using different solubility measurement methods

Rodriguez Meizoso, Irene LU ; Werner, O.; Quan, C.; Knez, Z. and Turner, Charlotta LU (2012) In Journal of Supercritical Fluids 61. p.25-33
Abstract
In this work, three different methods were used to determine the phase behavior of alkyl ketene dimer (AKD) in supercritical carbon dioxide (SC-CO2). Rough values for the total solubility of AKD in SC-CO2 were obtained. The solubility ranges from 1 to 14 mg AKD/g CO2 at temperatures from 40 to 80 degrees C and pressures from 10 to 30 MPa. A significant increase in solubility was observed in the region above 50 degrees C and 20 MPa. A region of improved solubility was found, without the presence of a cross-over pressure point. The fact that different solubility methods gave different results was discussed and the importance of data interpretation was highlighted. H-1 NMR and MALDI-TOF MS analyses were utilized to chemically characterize the... (More)
In this work, three different methods were used to determine the phase behavior of alkyl ketene dimer (AKD) in supercritical carbon dioxide (SC-CO2). Rough values for the total solubility of AKD in SC-CO2 were obtained. The solubility ranges from 1 to 14 mg AKD/g CO2 at temperatures from 40 to 80 degrees C and pressures from 10 to 30 MPa. A significant increase in solubility was observed in the region above 50 degrees C and 20 MPa. A region of improved solubility was found, without the presence of a cross-over pressure point. The fact that different solubility methods gave different results was discussed and the importance of data interpretation was highlighted. H-1 NMR and MALDI-TOF MS analyses were utilized to chemically characterize the AKD wax. Its special behavior and the influence of data interpretation on the design of a RESS process were discussed. (C) 2011 Elsevier B.V. All rights reserved. (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
Alkyl ketene dimer, Wax, Supercritical carbon dioxide, Solubility
in
Journal of Supercritical Fluids
volume
61
pages
25 - 33
publisher
Elsevier
external identifiers
  • wos:000301015200004
  • scopus:83955165866
ISSN
0896-8446
DOI
10.1016/j.supflu.2011.09.010
language
English
LU publication?
yes
id
66dfbfe5-e21e-43fa-90af-1ce27168277d (old id 2517508)
date added to LUP
2012-05-07 09:27:11
date last changed
2017-01-22 03:08:47
@article{66dfbfe5-e21e-43fa-90af-1ce27168277d,
  abstract     = {In this work, three different methods were used to determine the phase behavior of alkyl ketene dimer (AKD) in supercritical carbon dioxide (SC-CO2). Rough values for the total solubility of AKD in SC-CO2 were obtained. The solubility ranges from 1 to 14 mg AKD/g CO2 at temperatures from 40 to 80 degrees C and pressures from 10 to 30 MPa. A significant increase in solubility was observed in the region above 50 degrees C and 20 MPa. A region of improved solubility was found, without the presence of a cross-over pressure point. The fact that different solubility methods gave different results was discussed and the importance of data interpretation was highlighted. H-1 NMR and MALDI-TOF MS analyses were utilized to chemically characterize the AKD wax. Its special behavior and the influence of data interpretation on the design of a RESS process were discussed. (C) 2011 Elsevier B.V. All rights reserved.},
  author       = {Rodriguez Meizoso, Irene and Werner, O. and Quan, C. and Knez, Z. and Turner, Charlotta},
  issn         = {0896-8446},
  keyword      = {Alkyl ketene dimer,Wax,Supercritical carbon dioxide,Solubility},
  language     = {eng},
  pages        = {25--33},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Phase-behavior of alkyl ketene dimmer (AKD) in supercritical carbon dioxide. The implications of using different solubility measurement methods},
  url          = {http://dx.doi.org/10.1016/j.supflu.2011.09.010},
  volume       = {61},
  year         = {2012},
}