A Reference High-Pressure CO2 Adsorption Isotherm for Ammonium ZSM-5 Zeolite: Results of an Interlaboratory Study

Authors

H. G.T. Nguyen, National Institute of Standards and Technology
L. Espinal, National Institute of Standards and TechnologyFollow
R. D. van Zee, National Institute of Standards and Technology
M. Thommes, National Institute of Standards and Technology
B. Toman, National Institute of Standards and Technology
M. S.L. Hudson, National Institute of Standards and Technology
E. Mangano, The University of Edinburgh
S. Brandani, The University of Edinburgh
D. P. Broom, Hiden Isochema Ltd
M. J. Benham, Hiden Isochema Ltd
K. Cychosz, Quantachrome Instruments
P. Bertier, Rheinisch-Westfälische Technische Hochschule Aachen
F. Yang, Rheinisch-Westfälische Technische Hochschule Aachen
B. M. Krooss, Rheinisch-Westfälische Technische Hochschule Aachen
R. L. Siegelman, University of California, Berkeley
M. Hakuman, MicrotracBEL Corp.
K. Nakai, MicrotracBEL Corp.
A. D. Ebner, University of South Carolina
L. Erden, University of South Carolina
J. A. Ritter, University of South Carolina
A. Moran, Cleveland State University
Orhan Talu, Cleveland State UniversityFollow
Y. Huang, Georgia Institute of Technology
K. S. Walton, Georgia Institute of Technology
P. Billemont, Université de Mons
G. De Weireld, Université de Mons

Document Type

Article

Publication Date

8-1-2018

Publication Title

Adsorption

Abstract

© 2018, The Author(s). 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 carbon dioxide adsorption isotherms on NIST Reference Material RM 8852 (ammonium ZSM-5 zeolite), at 293.15 K (20 °C) from 1 kPa up to 4.5 MPa. Eleven laboratories participated in this exercise and, for the first time, high-pressure adsorption reference data are reported using a reference material. An empirical reference equation nex=d(1+exp[(-ln(P)+a)/b])c, [nex-surface excess uptake (mmol/g), P-equilibrium pressure (MPa), a = −6.22, b = 1.97, c = 4.73, and d = 3.87] along with the 95% uncertainty interval (Uk = 2 = 0.075 mmol/g) were determined for the reference isotherm using a Bayesian, Markov Chain Monte Carlo method. Together, this zeolitic reference material and the associated adsorption data provide a means for laboratories to test and validate high-pressure adsorption equipment and measurements. Recommendations are provided for measuring reliable high-pressure adsorption isotherms using this material, including activation procedures, data processing methods to determine surface excess uptake, and the appropriate equation of state to be used.

Repository Citation

Nguyen, H. G.T.; Espinal, L.; van Zee, R. D.; Thommes, M.; Toman, B.; Hudson, M. S.L.; Mangano, E.; Brandani, S.; Broom, D. P.; Benham, M. J.; Cychosz, K.; Bertier, P.; Yang, F.; Krooss, B. M.; Siegelman, R. L.; Hakuman, M.; Nakai, K.; Ebner, A. D.; Erden, L.; Ritter, J. A.; Moran, A.; Talu, Orhan; Huang, Y.; Walton, K. S.; Billemont, P.; and De Weireld, G., "A Reference High-Pressure CO2 Adsorption Isotherm for Ammonium ZSM-5 Zeolite: Results of an Interlaboratory Study" (2018). Chemical & Biomedical Engineering Faculty Publications. 186.
https://engagedscholarship.csuohio.edu/encbe_facpub/186

Volume

24

Issue

6

DOI

10.1007/s10450-018-9958-x

Version

Publisher's PDF

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.