Screening zeolites for gas separation applications involving methane, nitrogen, and carbon dioxide

Jensen, Nathan K., Rufford, Thomas E., Watson, Guillaume, Zhang, Dongke K., Chan, K. Ida and May, Eric F. (2012) Screening zeolites for gas separation applications involving methane, nitrogen, and carbon dioxide. Journal of Chemical and Engineering Data, 57 1: 106-113. doi:10.1021/je200817w


Author Jensen, Nathan K.
Rufford, Thomas E.
Watson, Guillaume
Zhang, Dongke K.
Chan, K. Ida
May, Eric F.
Title Screening zeolites for gas separation applications involving methane, nitrogen, and carbon dioxide
Journal name Journal of Chemical and Engineering Data   Check publisher's open access policy
ISSN 0021-9568
1520-5134
Publication date 2012-01
Sub-type Article (original research)
DOI 10.1021/je200817w
Volume 57
Issue 1
Start page 106
End page 113
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2012
Language eng
Formatted abstract
An experimental evaluation of the kinetics and equilibrium capacities of pure fluids as a fast and effective means to screen an adsorbent's gas separation potential is described. Equilibrium adsorption capacities for pure N 2, CH 4, and CO 2 have been determined using a Micromeritics ASAP2020 sorption analyzer, for three commercially available zeolites: natural chabazite, H + mordenite, and Linde 4A molecular sieve over the temperature range from (248 to 302) K and pressure range from (0.001 to 120) kPa. Toth models were regressed to the equilibrium data for each gas and used to generate inferred equilibrium selectivity maps over a wider range of temperature and pressure for the purpose of targeting any future mixture measurements. For each gas, the rate of adsorption at 100 kPa was measured as a function of temperature and used with a linear driving force model to calculate mass transfer coefficients. In most cases the ratio of the mass transfer coefficients for each pair of gases was close to unity and did not give rise to a significant kinetic selectivity. However the Linde 4A molecular sieve at 273 K and 100 kPa had a kinetic selectivity for CO 2 over CH 4 of 6.2. This approach to screening adsorbents with pure fluids can assist in optimizing the design of subsequent mixture measurements by identifying the most promising temperature and pressure ranges to target.
Keyword Molecular sieve
Adsorption Equilibrium
High Pressures
Kinetics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 30 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 17 Jan 2013, 13:02:24 EST by Dr Thomas Rufford on behalf of School of Chemical Engineering