Xenon and Krypton separation by membranes at sub-ambient temperatures and its comparison with cryogenic distillation

Miandoab, Ehsan Soroodan; Mousavi, Seyed Hesam; Kentish, Sandra E.; Scholes, Colin A.

doi:10.1016/j.seppur.2021.118349

Cited by 14 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This cryogenic distillation method or some similar method (e.g. membrane methods [42]) for underground removal of 37 Ar should now be considered an essential element in the design of future experiments.…”

Section: Discussionmentioning

confidence: 99%

Cosmogenic production of $^{37}$Ar in the context of the LUX-ZEPLIN experiment

Aalbers,

Akerib,

Musalhi

et al. 2022

Preprint

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Cosmogenic production of $^{37}$Ar in the context of the LUX-ZEPLIN experiment

Aalbers,

Akerib,

Musalhi

et al. 2022

Preprint

View full text Add to dashboard Cite

“…One can leverage the difference of the molecules diffusion coefficients to selectively filter gas mixtures through a nanoporous membrane. 103 Here, the main subject becomes the transient state and not the equilibrium. This section is thus dedicated to the kinetics of the adsorption process to better model the time required to reach the equilibrium or to study out-of-equilibrium processes such as molecular sieving by nanoporous membranes.…”

Section: Transport Propertiesmentioning

confidence: 99%

High-throughput computational screening of nanoporous materials in targeted applications

2022

View full text Add to dashboard Cite

show abstract

“…9 Effective N 2 rejection continues to be one of the most challenging separations in the gas industries. Cryogenic distillation working at about 100 K, has been the only commercial technology for N 2 removal to date, 1,8,10 though it is extremely energy-intensive and only practical in large scales. Alternatively, adsorption-based technology is a practical separation technique with lower energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Screening of Alkali Metal-Exchanged Zeolites for Nitrogen/Methane Separation

et al. 2023

Self Cite

View full text Add to dashboard Cite

Methane (CH4) is the primary component of natural gas and must be purified to a certain level before it can be used as pipeline gas or liquified natural gas (LNG). In particular, nitrogen (N2), a common contaminant in natural gas needs to be rejected to increase the heating value of the gas and meet the LNG product specifications. The development of energy-efficient N2 removal technologies is hampered by N2’s inertness and its resemblance to CH4 in terms of kinetic size and polarizability. N2-selective materials are so rare. Here, for the first time, we screened 1425 alkali metal cation exchange zeolites to identify the candidates with the best potential for the separation of N2 from CH4. We discovered a few extraordinary zeolite frameworks capable of achieving equilibrium selectivity toward N2. Particularly, Li+-RRO-3 zeolite with a specific two-dimensional structure demonstrated a selective N2 adsorption capacity of 2.94 mmol/g at 283 K and 1 bar, outperforming the capacity of all known zeolites. Through an ab initio density functional theory study, we found that the five-membered ring of the RRO framework is the most stable cationic site for Li+, and this Li+ can interact with multiple N2 molecules but only one CH4, revealing the mechanism for the high capacity and selectivity of N2. This work suggests promising adsorbents to enable N2 rejection from CH4 in the gas industry without going for energy-intensive cryogenic distillations.

show abstract

Xenon and Krypton separation by membranes at sub-ambient temperatures and its comparison with cryogenic distillation

Cited by 14 publications

References 43 publications

Cosmogenic production of $^{37}$Ar in the context of the LUX-ZEPLIN experiment

Cosmogenic production of $^{37}$Ar in the context of the LUX-ZEPLIN experiment

High-throughput computational screening of nanoporous materials in targeted applications

Screening of Alkali Metal-Exchanged Zeolites for Nitrogen/Methane Separation

Contact Info

Product

Resources

About