Abstract
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 language | English |
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Pages (from-to) | 1253-1266 |
Number of pages | 14 |
Journal | Adsorption |
Volume | 26 |
Early online date | 11 Sept 2020 |
DOIs | |
Publication status | Published - 30 Nov 2020 |
Keywords
- 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
- General Chemistry
- General Chemical Engineering
- Surfaces and Interfaces