Highly efficient CO2 capture with a metal–organic framework‐derived porous carbon impregnated with polyethyleneimine |
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Authors: | Samira Salehi Mansoor Anbia |
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Institution: | Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Farjam Street, Narmak, Tehran, Iran |
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Abstract: | Global warming is considered as one of the great challenges of the twenty‐first century. Application of CO2 capture and storage technologies to flue gas is considered to be a useful method of lessening global warning. Highly porous carbon has played an important role in tackling energy and environmental problems. We attempted to synthesize a highly porous carbon adsorbent by carbonizing a highly crystalline metal–organic framework (MOF) without any carbon precursors and focused on the adsorption of CO2 and CH4 gases and CO2/CH4 selectivity at 298, 323 and 348 K using a volumetric apparatus. The MOF‐derived porous carbon (MDC) was prepared by direct carbonization of MOF‐199 as a template at 900 °C under nitrogen atmosphere. Amino‐impregnated MDC samples exhibited enhanced adsorption capacities by a combination of physical and chemical adsorption. Polyethyleneimine (PEI) was selected as the amine source, which was found to greatly enhance CO2 capture when supported on the porous carbon. Novel PEI‐impregnated MDC nanocomposites were synthesized by wetness impregnation and then characterized using various methods. |
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Keywords: | carbon dioxide methane MOF‐derived porous carbon nanocomposite polyethyleneimine |
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