The excess thermodynamic properties of liquid (CH4+CD4)
10.1063/1.466290
Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The vapor pressure differences between a mixture of (CH4+CD4) and CH4 and between CD4 and CH4 were measured simultaneously with the CH4 vapor pressure. This was done at 29 temperatures between 97 and 122 K, and for six different mixtures, of compositions 0.150, 0.250, 0.375, 0.500, 0.625, and 0.750 mole fraction in CD4. These mixtures exhibit very small positive deviations from Raoult’s law. Calculated excess Gibbs energies for equimolar mixtures were 0.60 J mol−1 at 100 K and 0.42 J mol−1 at 120 K. These values of GE are 2 to 3 orders of magnitude smaller than those typically found in binary mixtures of simple nonisotopic species. The molar excess enthalpy, calculated from the temperature dependence of GE, is HE(x=0.5)=(1.5±0.2) J mol−1. The experimental results were used to test three theoretical models: the vdW-1 fluid theory, 1cLJ perturbation theory, and the theory of isotope effects in mixtures. While the first two proved to be inadequate, the isotope effect theory agrees well with experiment.

Bibliography

Calado, J. C. G., Jancsó, G., Lopes, J. N. C., Markó, L., da Ponte, M. N., Rebelo, L. P. N., & Staveley, L. A. K. (1994). The excess thermodynamic properties of liquid (CH4+CD4). The Journal of Chemical Physics, 100(6), 4582–4590.

Authors 7
  1. J. C. G. Calado (first)
  2. G. Jancsó (additional)
  3. J. N. C. Lopes (additional)
  4. L. Markó (additional)
  5. M. Nunes da Ponte (additional)
  6. L. P. N. Rebelo (additional)
  7. L. A. K. Staveley (additional)
References 50 Referenced 17
  1. 10.1021/j100345a093 / J. Phys. Chem. (1989)
  2. {'key': '2024020523281945900_r2', 'first-page': '63', 'volume': '47', 'year': '1951', 'journal-title': 'J. Res. N.B.S.'} / J. Res. N.B.S. (1951)
  3. 10.1021/ja01123a068 / J.A.C.S. (1952)
  4. 10.1016/0031-8914(61)90103-3 / Physica (1961)
  5. 10.1016/0031-8914(62)90014-9 / Physica (1962)
  6. {'key': '2024020523281945900_r6', 'first-page': '1345', 'volume': '92', 'year': '1952', 'journal-title': 'Phys. Rev.'} / Phys. Rev. (1952)
  7. {'key': '2024020523281945900_r7', 'first-page': '60', 'volume': '46', 'year': '1991', 'journal-title': 'Z. Naturforsch. Teil A'} / Z. Naturforsch. Teil A (1991)
  8. 10.1063/1.1676987 / J. Chem. Phys. (1972)
  9. 10.1016/0378-4371(78)90204-2 / Physica A (1978)
  10. 10.1063/1.436164 / J. Chem. Phys. (1978)
  11. 10.1063/1.436163 / J. Chem. Phys. (1978)
  12. 10.1071/CH9790197 / Aust. J. Chem. (1979)
  13. 10.1071/CH9802357 / Aust. J. Chem. (1980)
  14. 10.1021/j100412a111 / J. Phys. Chem. (1986)
  15. 10.1063/1.452050 / J. Chem. Phys. (1987)
  16. 10.1063/1.1701033 / J. Chem. Phys. (1961)
  17. 10.1016/S0031-8914(53)80025-X / Physica (1953)
  18. 10.1016/S0031-8914(54)80076-0 / Physica (1954)
  19. 10.1016/0031-8914(60)90015-X / Physica (1960)
  20. {'key': '2024020523281945900_r20', 'first-page': '237', 'volume': '34', 'year': '1972', 'journal-title': 'Técnica'} / Técnica (1972)
  21. 10.1063/1.1740735 / J. Chem. Phys. (1955)
  22. 10.1063/1.1744216 / J. Chem. Phys. (1958)
  23. 10.1016/0021-9614(86)90108-4 / J. Chem. Thermodyn. (1986)
  24. 10.1016/0031-8914(65)90082-0 / Physica (1965)
  25. 10.1063/1.1668757 / J. Chem. Phys. (1968)
  26. {'key': '2024020523281945900_r26'}
  27. {'key': '2024020523281945900_r27'}
  28. 10.1063/1.1681568 / J. Chem. Phys. (1974)
  29. {'key': '2024020523281945900_r29'}
  30. 10.1016/0301-0104(80)80047-4 / Chem. Phys. (1980)
  31. 10.1039/tf9686401447 / Trans. Faraday Soc. (1968)
  32. 10.1007/BF00810050 / Monatsh. Chem. (1987)
  33. 10.1016/0021-9614(88)90015-8 / J. Chem. Thermodyn. (1988)
  34. 10.1063/1.1749653 / J. Chem. Phys. (1935)
  35. {'key': '2024020523281945900_r35'}
  36. {'key': '2024020523281945900_r36', 'first-page': '125', 'volume': '16', 'year': '1985', 'journal-title': 'Port. Phys.'} / Port. Phys. (1985)
  37. 10.1080/00268978400101351 / Mol. Phys. (1984)
  38. {'key': '2024020523281945900_r38', 'first-page': '117', 'volume': '14', 'year': '1972', 'journal-title': 'Rev. Port. Quim.'} / Rev. Port. Quim. (1972)
  39. 10.1039/tf9605600761 / Trans. Faraday Soc. (1960)
  40. {'issue': '1', 'key': '2024020523281945900_r40', 'volume': '6', 'year': '1977', 'journal-title': 'J. Chem. Phys. Ref. Data'} / J. Chem. Phys. Ref. Data (1977)
  41. 10.1063/1.1682063 / J. Chem. Phys. (1974)
  42. 10.1063/1.1701635 / J. Chem. Phys. (1967)
  43. 10.1063/1.433748 / J. Chem. Phys. (1977)
  44. {'key': '2024020523281945900_r44', 'first-page': '1099', 'volume': '30', 'year': '1959', 'journal-title': 'J. Chem. Phys.'} / J. Chem. Phys. (1959)
  45. 10.1063/1.1724857 / J. Chem. Phys. (1964)
  46. 10.1063/1.1675744 / J. Chem. Phys. (1971)
  47. 10.1063/1.449842 / J. Chem. Phys. (1985)
  48. 10.1063/1.439870 / J. Chem. Phys. (1980)
  49. 10.1063/1.437854 / J. Chem. Phys. (1979)
  50. 10.1016/0167-7322(92)80074-R / J. Mol. Liq. (1992)
Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 8:12 a.m.)
Deposited 1 year, 7 months ago (Feb. 5, 2024, 7:09 p.m.)
Indexed 1 year, 6 months ago (Feb. 10, 2024, 3:08 p.m.)
Issued 31 years, 5 months ago (March 15, 1994)
Published 31 years, 5 months ago (March 15, 1994)
Published Print 31 years, 5 months ago (March 15, 1994)
Funders 0

None

@article{Calado_1994, title={The excess thermodynamic properties of liquid (CH4+CD4)}, volume={100}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.466290}, DOI={10.1063/1.466290}, number={6}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Calado, J. C. G. and Jancsó, G. and Lopes, J. N. C. and Markó, L. and da Ponte, M. Nunes and Rebelo, L. P. N. and Staveley, L. A. K.}, year={1994}, month=mar, pages={4582–4590} }