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Calorimetric Heats of Adsorption and Adsorption Isotherms. 2. O2, N2, Ar, CO2, CH4, C2H6, and SF6 on NaX, H-ZSM-5, and Na-ZSM-5 Zeolites
Abstract
Isosteric heats of adsorption and adsorption isotherms have been measured simultaneously in a calorimeter for a series of gases of increasing size and magnitude of quadrupole moment (Ar, O 2, N 2, CH 4, C 2 H 6, SF 6, CO 2 ) on adsorbents of varying pore structure and ion type (NaX, H-ZSM-5, Na-ZSM-5). Adsorption isotherms have been checked for reversibility by desorption experiments. The average experimental error in loading is ±0.6%; the average uncertainty in the isosteric heat of adsorption is ±0.5 kJ/mol. Heats of adsorption of nonpolar molecules (CH 4, C 2 H 6, SF 6 ) increase in the order NaX, silicalite, H-ZSM-5, Na-ZSM-5 at low coverage. Heats of adsorption of nonpolar molecules are almost identical on silicalite, H-ZSM-5, and Na-ZSM-5 at high coverage. Heats of adsorption of the quadrupolar molecule CO 2 increase in the order silicalite, H-ZSM-5, Na-ZSM-5, NaX. The electric field adjacent to Na + sites is 6.2 V/nm, on the basis of the difference between the heat of adsorption of CO 2 in Na-ZSM-5 and the heat of adsorption of CO 2 in silicalite.
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Cited by
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A review on solid adsorbents for carbon dioxide capture
Lee, S.-Y., & Park, S.-J. (2015) · Journal of Industrial and Engineering Chemistry · doi:10.1016/j.jiec.2014.09.001 · Cited by 707
Rufford, T. E., Smart, S., Watson, G. C. Y., Graham, B. F., Boxall, J., Diniz da Costa, J. C., & May, E. F. (2012) · Journal of Petroleum Science and Engineering · doi:10.1016/j.petrol.2012.06.016 · Cited by 676
Natural gas treating by selective adsorption: Material science and chemical engineering interplay
Tagliabue, M., Farrusseng, D., Valencia, S., Aguado, S., Ravon, U., Rizzo, C., Corma, A., & Mirodatos, C. (2009) · Chemical Engineering Journal · doi:10.1016/j.cej.2009.09.010 · Cited by 471
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Akhtar, F., Andersson, L., Ogunwumi, S., Hedin, N., & Bergström, L. (2014) · Journal of the European Ceramic Society · doi:10.1016/j.jeurceramsoc.2014.01.008 · Cited by 363
Metadata
- Authors
- Dunne, J. A., Rao, M., Sircar, S., Gorte, R. J., & Myers, A. L.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 12
- Issue
- 24
- Pages
- 5896-5904
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2079022793
- Cited by
- 468
- References
- 0
- FWCI
- 5.23
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Calorimetric Heats of Adsorption and Adsorption Isotherms. 2. O2, N2, Ar, CO2, CH4, C2H6, and SF6 on NaX, H-ZSM-5, and Na-ZSM-5 Zeolites. https://app.cochat.ai/papers/10.1021/la960496r
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- Dunne, J. A., Rao, M., Sircar, S., Gorte, R. J., & Myers, A. L. (1996). Calorimetric Heats of Adsorption and Adsorption Isotherms. 2. O2, N2, Ar, CO2, CH4, C2H6, and SF6 on NaX, H-ZSM-5, and Na-ZSM-5 Zeolites. Langmuir. https://doi.org/10.1021/la960496r
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