Phase-behavior of alkyl ketene dimmer (AKD) in supercritical carbon dioxide. The implications of using different solubility measurement methods
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2517508
- author
- Rodriguez Meizoso, Irene LU ; Werner, O. ; Quan, C. ; Knez, Z. and Turner, Charlotta LU
- organization
- publishing date
- 2012
- type
- 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
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Organic chemistry (S/LTH) (011001240)
- id
- 66dfbfe5-e21e-43fa-90af-1ce27168277d (old id 2517508)
- date added to LUP
- 2016-04-01 10:23:12
- date last changed
- 2024-02-21 15:28:31
@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}}, keywords = {{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}}, doi = {{10.1016/j.supflu.2011.09.010}}, volume = {{61}}, year = {{2012}}, }