A reference high-pressure CH4 adsorption isotherm for zeolite Y: results of an interlaboratory study

H. G.T. Nguyen, C. M. Sims, B. Toman, J. Horn, R. D. van Zee, M. Thommes, R. Ahmad, J. F.M. Denayer, G. V. Baron, E. Napolitano, M. Bielewski, E. Mangano, S. Brandani, D. P. Broom, M. J. Benham, A. Dailly, F. Dreisbach, S. Edubilli, S. Gumma, J. MöllmerM. Lange, M. Tian, T. J. Mays, T. Shigeoka, S. Yamakita, M. Hakuman, Y. Nakada, K. Nakai, J. Hwang, R. Pini, H. Jiang, A. D. Ebner, M. A. Nicholson, J. A. Ritter, J. Farrando-Pérez, C. Cuadrado-Collados, J. Silvestre-Albero, C. Tampaxis, T. Steriotis, D. Řimnáčová, M. Švábová, M. Vorokhta, H. Wang, E. Bovens, N. Heymans, G. De Weireld

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26 Citations (SciVal)


This paper reports the results of an international interlaboratory study led by the National Institute of Standards and Technology (NIST) on the measurement of high-pressure surface excess methane adsorption isotherms on NIST Reference Material RM 8850 (Zeolite Y), at 25 °C up to 7.5 MPa. Twenty laboratories participated in the study and contributed over one-hundred adsorption isotherms of methane on Zeolite Y. From these data, an empirical reference equation was determined, along with a 95% uncertainty interval (Uk=2). By requiring participants to replicate a high-pressure reference isotherm for carbon dioxide adsorption on NIST Reference Material RM 8852 (ZSM-5), this interlaboratory study also demonstrated the usefulness of reference isotherms in evaluating the performance of high-pressure adsorption experiments.

Original languageEnglish
Pages (from-to)1253-1266
Number of pages14
Early online date11 Sept 2020
Publication statusPublished - 30 Nov 2020


  • CH
  • CO
  • High-pressure adsorption isotherm
  • Interlaboratory study
  • Reference isotherm
  • Reference material
  • RM 8850
  • RM 8852
  • Surface excess adsorption
  • Zeolite Y
  • ZSM-5

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Surfaces and Interfaces


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