A reference high-pressure CO2 adsorption isotherm for ammonium ZSM-5 zeolite: results of an interlaboratory study

Nguyen HGT, Espinal L, Van Zee RD, Thommes M, Toman B, Hudson MSL, Mangano E, Brandani S, Broom DP, Benham MJ, Cychosz K, Bertier PG, Yang F, Krooss BM, Siegelman RL, Hakuman M, Nakai K, Ebner AD, Erden L, Ritter JA, Moran A, Talu O, Huang Y, Walton KS, Billemont P, De Weireld G (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Adsorption-Journal of the International Adsorption Society Springer Verlag (Germany)

Book Volume: 24

Pages Range: 531-539

Journal Issue: 6

DOI: 10.1007/s10450-018-9958-x

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 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.

Involved external institutions

National Institute of Standards and Technology (NIST) US United States (USA) (US) University of Edinburgh GB United Kingdom (GB) University of South Carolina US United States (USA) (US) Cleveland State University US United States (USA) (US) Georgia Institute of Technology US United States (USA) (US) University of Mons / Université de Mons BE Belgium (BE) University of California, Berkeley US United States (USA) (US) MicrotracBEL Corp. JP Japan (JP) Hiden Isochema GB United Kingdom (GB) Quantachrome Instruments US United States (USA) (US) Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen DE Germany (DE)

How to cite

APA:

Nguyen, H.G.T., Espinal, L., Van Zee, R.D., Thommes, M., Toman, B., Hudson, M.S.L.,... De Weireld, G. (2018). A reference high-pressure CO2 adsorption isotherm for ammonium ZSM-5 zeolite: results of an interlaboratory study. Adsorption-Journal of the International Adsorption Society, 24(6), 531-539. https://dx.doi.org/10.1007/s10450-018-9958-x

MLA:

Nguyen, H. G. T., et al. "A reference high-pressure CO2 adsorption isotherm for ammonium ZSM-5 zeolite: results of an interlaboratory study." Adsorption-Journal of the International Adsorption Society 24.6 (2018): 531-539.

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