1. Electrical conductive 3D-printed monolith adsorbent for CO2 capture.
- Author
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Regufe, Maria João, Ferreira, Alexandre F.P., Loureiro, José Miguel, Rodrigues, Alírio, and Ribeiro, Ana Mafalda
- Subjects
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ADSORPTION (Chemistry) , *SURFACE chemistry , *ELECTRIC conductivity , *ADSORPTION kinetics , *COMPUTER simulation of adsorption - Abstract
Abstract The development of an adsorbent material by 3D printing technology with high CO 2 adsorption capacity and electrical conductivity is presented for application in Electric Swing Adsorption process. The adsorbent is composed by zeolite 13X, activated carbon and binder. The prepared ink was characterized in order to determine its rheological properties. Two honeycomb monoliths, one with 30 × 30 × 43 mm3 and another one with 30 × 28 × 10 mm3 were printed. Textural characterization was performed by several techniques, including CO 2 adsorption at 273 K. A high CO 2 adsorption capacity of 3.49 mol/kg was obtained for the 3D-printed monolith at 0.15 bar and 273 K. Mechanical strength of the material was evaluated in a piece with 10 × 10 × 4 mm3. A value of 5.0 MPa was obtained. Heating of the material was tested by Joule effect through an electric current passage in the monolith, which presented a resistivity of 0.28 Ωm. An increase of temperature of about 80 K was achieved in 180 s, with a power consumption of 3.25 W. An adsorption quantity of CO 2 of 1.45 mol/kg (at 0.09 bar and 303 K) was obtained by adsorption equilibrium isotherms measurements. These experiments demonstrated that the printed material is suitable for Electric Swing Adsorption processes applied for CO 2 capture. Graphical abstract Image 1 Highlights • 3D-Printed honeycomb monolith with 43 mm of height was successfully developed. • CO 2 adsorption isotherms demonstrated a high adsorption capacity. • A power of 3.25 W for 180 seconds is needed to increase the temperature 80 K. • 3D-printed adsorbent can be used in ESA process due to the electrical properties. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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