Separation of fischer-Tropsch Wax from Catalyst by Supercritical Extraction.

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Description

Although alkanes are the major constituent of a Fischer-Tropsch wax, significant quantities (e.g., up to 30 wt %) of long-chain alcohol and alkene compounds can also be found in a F-T wax. With the lack of experimental data, the effect that the hydroxy and double-bond functional groups have on the phase behavior of systems containing long- chain hydrocarbons is unknown. Therefore, the phase behavior of the system n-hexane/1-hexadecanol was measured for comparison with the previously measured system n-hexane/hexadecane. Vapor and liquid equilibrium compositions and mixture critical points were measured at 198.9, 251.3, 299.2, and 349.9 {degrees}C at pressures ranging from ... continued below

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17 p.

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Joyce, P.C.; Thies, M.C.; Sherrard, D.; Biales, J.; Kilpatrick, P. & Roberts, G. July 31, 1997.

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Description

Although alkanes are the major constituent of a Fischer-Tropsch wax, significant quantities (e.g., up to 30 wt %) of long-chain alcohol and alkene compounds can also be found in a F-T wax. With the lack of experimental data, the effect that the hydroxy and double-bond functional groups have on the phase behavior of systems containing long- chain hydrocarbons is unknown. Therefore, the phase behavior of the system n-hexane/1-hexadecanol was measured for comparison with the previously measured system n-hexane/hexadecane. Vapor and liquid equilibrium compositions and mixture critical points were measured at 198.9, 251.3, 299.2, and 349.9 {degrees}C at pressures ranging from 6.2 to 46.4 bar. Temperature and pressure measurements for all isotherms are believed to be accurate to better than plus or minus 3 and 4 percent, respectively. Results indicate that the addition of the alcohol group to a C 16 hydrocarbon chain significantly affects the phase behavior with hexane, with the two-phase region extending to significantly higher (i.e., up to about 10 bar higher) pressures. The presence of an alcohol group was also found to be an impediment to obtaining a good fit of the experimental data with the Peng-Robinson equation.

Physical Description

17 p.

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OSTI as DE98050349

Medium: P; Size: 17 p.

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  • Other Information: PBD: 31 Jul 1997

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  • Other: DE98050349
  • Report No.: DOE/PC/94219--T10
  • Grant Number: FG22-94PC94219
  • DOI: 10.2172/643303 | External Link
  • Office of Scientific & Technical Information Report Number: 643303
  • Archival Resource Key: ark:/67531/metadc696039

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  • July 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 7, 2017, 3:55 p.m.

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Joyce, P.C.; Thies, M.C.; Sherrard, D.; Biales, J.; Kilpatrick, P. & Roberts, G. Separation of fischer-Tropsch Wax from Catalyst by Supercritical Extraction., report, July 31, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc696039/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.