Inverse analyses of diffusion processes in type 13X zeolite particles

Goubaru, Asami; Abe, Sinichi; Ermalina,; Kamiuto, Kouichi

doi:10.1016/j.apenergy.2004.07.010

Cited by 1 publication

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“…For comparison with other MOFs, the CO 2 diffusion coefficient has been estimated (by uptake measurements) to be 7.9 × 10 −13 and 1.72 × 10 −8 m 2 ·s −1 for the MOF-5, , and QENS yields a value of 10 −8 m 2 ·s −1 for the MIL-47(V) . The range of diffusion coefficients of CO 2 in zeolite Na−X is between 6.49 × 10 15 and 3.4 × 10 −10 m 2 ·s −1 , depending on the measurement methods. – The discrepancies between these values have already been discussed by Kärger and Ruthven . We chose, quite arbitrarily, an intermediate value of 1 × 10 −10 m 2 ·s −1 for both CO 2 and CH 4 .…”

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confidence: 99%

CO₂ and CH₄ Separation by Adsorption Using Cu-BTC Metal−Organic Framework

Hamon

Jolimaître

Pirngruber

2010

Ind. Eng. Chem. Res.

235

140

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Molecular simulations have shown that the metal-organic framework Cu-BTC (Cu 3 (BTC) 2) is an interesting candidate for the separation of CO 2 by adsorption. In this work, the first experimental binary and ternary adsorption data of CO 2 , CH 4 , and CO on the Cu-BTC are reported. These data are analyzed and compared with coadsorption models that are built from pure component isotherm data. Cu-BTC has a CO 2 /CH 4 selectivity of ∼8 and a high delta loading ()difference between adsorption capacity under conditions of adsorption and desorption) and therefore appears to be a good compromise between zeolites, with high selectivity for CO 2 , but low delta loadings, and activated carbons, with high delta loadings, but low selectivity, for pressure swing adsorption applications.

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