Artículo
Wetzler, D.E.; Aramendía, P.F.; Japas, M.L.; Fernández-Prini, R. "Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing" (1998) International Journal of Thermophysics. 19(1):27-42
Estamos trabajando para incorporar este artículo al repositorio
Consulte la política de Acceso Abierto del editor
Abstract:
Thermal diffusivities of supercritical CO2 and C2H6 were determined over a wide density range with a photothermal technique. The thermal lens, formed by the degradation of the absorbed light energy as heat by the sample, allows the employment of a nonequilibrium method in the critical region. Controlling the refractive-index gradient, i.e., a density gradient, perturbations can be maintained at levels where convection is negligible. An easy-to-operate setup allowed us to measure thermal diffusivities in the density ranges 5 to 20 mol·dm-3 for CO2 at 308 and 313 K and 2 to 12mol·dm-3 for C2H6 at 308 K with a standard precision of 15%.
Registro:
| Documento: | Artículo |
| Título: | Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing |
| Autor: | Wetzler, D.E.; Aramendía, P.F.; Japas, M.L.; Fernández-Prini, R. |
| Filiación: | Depto. Quim. Inorg. Analitica y Q., Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina Unidad de Actividad Química, Comn. Nac. de Ener. Atómica, Libertador 8250, 1429 Buenos Aires, Argentina |
| Palabras clave: | Carbon dioxide; Ethane; Photothermal; Supercritical fluid; Thermal diffusivity; Thermal lens; Carbon dioxide; Density (optical); Ethane; Light extinction; Measurement errors; Perturbation techniques; Refractive index; Thermal variables measurement; Supercritical carbon dioxide; Supercritical ethane; Thermal lensing; Thermal diffusion in liquids |
| Año: | 1998 |
| Volumen: | 19 |
| Número: | 1 |
| Página de inicio: | 27 |
| Página de fin: | 42 |
| DOI: | http://dx.doi.org/10.1023/A:1021442901002 |
| Título revista: | International Journal of Thermophysics |
| Título revista abreviado: | Int J Thermophys |
| ISSN: | 0195928X |
| CODEN: | IJTHD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0195928X_v19_n1_p27_Wetzler |
Referencias:
- Jessop, P.G., Ikariya, T., Noyori, R., (1994) Nature, 368, p. 231
- DeSimone, J.M., Guan, Z., Elsbernd, C.S., (1992) Science, 257, p. 945
- Fernández Prini, R., Japas, M.L., (1994) Chem. Soc. Rev., 23, p. 155
- Eckert, C.A., Knutson, B.L., Debenedetti, P.G., (1996) Nature, 383, p. 313
- Kestin, J., Wakeham, W.A., (1978) Physica, 92 A, p. 102
- Michels, A., Sengers, J.V., Van Der Gulik, P.S., (1962) Physica, 28, p. 1201
- Ford, N.C., Benedeck, G.B., (1965) Phys. Rev. Lett., 15, p. 649
- Leipertz, A., (1988) Int. J. Thermophys., 9, p. 897
- Kraft, K., Matos Lopes, M., Leipertz, A., (1995) Int. J. Thermophys., 16, p. 423
- Fang, H.L., Swofford, R.L., (1983) Ultrasensitive Laser Spectroscopy, pp. 175-232. , D. S. Kliger, ed. Academic Press, New York
- Heibel, G., Braslavsky, S.E., (1992) Chem. Rev., 92, p. 1381
- Leach, R.A., Harris, J.M., (1984) Anal. Chem., 56, p. 1481
- Leach, R.A., Harris, J.M., (1984) Anal. Chem., 56, p. 2801
- Kanda, D., Kimura, Y., Terazima, M., Hirota, H., (1996) Ber. Bunsenges Phys. Chem., 100, p. 656
- Dovichi, N.J., Harris, J.M., (1979) Anal. Chem., 51, p. 728
- Bailey, R.T., Cruickshank, F.R., Pugh, D., Guthrie, S., McLeod, A., Fowlds, W.S., Lee, W.R., Venkatesh, S., (1983) Chem. Phys., 77, p. 243
- Bailey, R.T., Cruickshank, F.R., Pugh, D., Johnston, W., (1980) J. Chem. Soc. Faraday Trans. II, 76, p. 633
- Bailey, R.T., Cruickshank, F.R., Pugh, D., Johnston, W., (1981) J. Chem. Soc. Faraday Trans. II, 77, p. 1387
- Brannon, J.H., Magde, D., (1978) J. Phys. Chem., 82, p. 705
- Hu, C., Whinnery, J.R., (1973) Appl. Opt., 12, p. 72
- Sheldon, S.J., Knight, L.V., Thorne, J.M., (1982) Appl. Opt., 21, p. 1663
- Carter, C.A., Harris, J.M., (1984) Appl. Opt., 23, p. 476
- Negri, R.M., Zalts, A., San Román, E.A., Aramendía, P.F., Braslavsky, S.E., (1991) Photochem. Protobiol., 53, p. 317
- Ely, J.F., Magee, J.W., Haynes, W.M., (1987) Research Report, 110. , Gas Proc. Assoc
- Friend, D.G., Inghan, H., Ely, J.F., (1991) J. Phys. Chem. Ref. Data, 20, p. 275
- Mosert, R., Van Den Berg, H.R., Van Der Gulik, P.S., Sengers, J.V., (1990) J. Chem. Phys., 9, p. 5454
- Michels, A., Sengers, J.V., Van Der Gulik, P.S., (1962) Physica, 28, p. 1216
Citas:
---------- APA ----------
Wetzler, D.E., Aramendía, P.F., Japas, M.L. & Fernández-Prini, R. (1998) . Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing. International Journal of Thermophysics, 19(1), 27-42.http://dx.doi.org/10.1023/A:1021442901002
---------- CHICAGO ----------
Wetzler, D.E., Aramendía, P.F., Japas, M.L., Fernández-Prini, R. "Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing" . International Journal of Thermophysics 19, no. 1 (1998) : 27-42.http://dx.doi.org/10.1023/A:1021442901002
---------- MLA ----------
Wetzler, D.E., Aramendía, P.F., Japas, M.L., Fernández-Prini, R. "Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing" . International Journal of Thermophysics, vol. 19, no. 1, 1998, pp. 27-42.http://dx.doi.org/10.1023/A:1021442901002
---------- VANCOUVER ----------
Wetzler, D.E., Aramendía, P.F., Japas, M.L., Fernández-Prini, R. Thermal Diffusivity in Supercritical Fluids Measured by Thermal Lensing. Int J Thermophys. 1998;19(1):27-42.http://dx.doi.org/10.1023/A:1021442901002
