What question did this study set out to answer?

Determine adsorption equilibrium and transport parameters for methane and carbon dioxide on zeolites 4A and 13X at low temperatures to support the design of cryogenic adsorption separation processes.

September 26, 2014Energy & Fuels

Cryogenic Adsorption of Methane and Carbon Dioxide on Zeolites 4A and 13X

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CGCarlos A. GrandeKing Abdullah University of Science and Technology RBRichard BlomSINTEF

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Implication

Experimental study demonstrates selective low-temperature carbon dioxide capture over methane in zeolite adsorbents, highlighting potential energy reductions in liquefied natural gas processing.

Key Points

Determine adsorption equilibrium and transport parameters for methane and carbon dioxide on zeolites 4A and 13X at low temperatures to support the design of cryogenic adsorption separation processes.
Measured pure-component adsorption isotherms of CH4 and CO2 on commercial zeolites 4A and 13X across cryogenic temperatures (198, 208, 223, 248, and 279 K).
Recorded adsorption breakthrough curves for a binary gas mixture (1.5% CO2 and 98.5% CH4) in zeolite 4A at 204 K under pressures of 1 and 10 bar across varied flow rates.
Carbon dioxide demonstrated markedly higher adsorption uptake than methane across both zeolites, yielding extremely steep isotherms under low-temperature conditions.
Zeolite 4A exhibited distinct separation mechanisms for the two gases at low temperatures, with methane uptake governed by diffusion kinetics and carbon dioxide uptake governed by equilibrium isotherm shape.

Cite This Study

Grande et al. (2014) studied this question.

synapsesocial.com/papers/6a90e21ee55c7a42f270f989 https://doi.org/10.1021/ef501814x

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Implication

Experimental study demonstrates selective low-temperature carbon dioxide capture over methane in zeolite adsorbents, highlighting potential energy reductions in liquefied natural gas processing.

Cryogenic Adsorption of Methane and Carbon Dioxide on Zeolites 4A and 13X

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Key Points

Cite This Study

Cryogenic Adsorption of Methane and Carbon Dioxide on Zeolites 4A and 13X

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Implication

Key Points

Cite This Study

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