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. 2019 Jun 28;12(13):2088. doi: 10.3390/ma12132088

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Adsorption isotherms of CO₂ at high pressure (3 × 10⁻³ up to 3.0 MPa) of CN.LYS2 at (a) 0 °C, (b) 25 °C, and (c) 50 °C; (d) sandstone impregnated with a mass fraction of 10% at 50 °C, (e) sandstone impregnated with a mass fraction of 20% at 50 °C. (f) Relationship between the impregnation percentages (mass fractions of 10 and 20%) and the adsorption capacity of CO₂ at 3 MPa and 0, 25, and 50 °C.

Adsorption isotherms of CO₂ at high pressure (3 × 10⁻³ up to 3.0 MPa) of CN.LYS2 at (a) 0 °C, (b) 25 °C, and (c) 50 °C; (d) sandstone impregnated with a mass fraction of 10% at 50 °C, (e) sandstone impregnated with a mass fraction of 20% at 50 °C. (f) Relationship between the impregnation percentages (mass fractions of 10 and 20%) and the adsorption capacity of CO₂ at 3 MPa and 0, 25, and 50 °C.