2018
DOI: 10.1039/c8se00089a
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Carbon nanotube/PVA aerogels impregnated with PEI: solid adsorbents for CO2 capture

Abstract: A series of ultra-light aerogels made of oxidized carbon nanotubes and cross-linked polyvinyl alcohol has been prepared by freeze drying of hydrogels, characterised, and tested as amine impregnated solid supports for CO2 capture.

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Cited by 15 publications
(6 citation statements)
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“…7 Comparison of selectivity of CO 2 /N 2 of 3D-structured adsorbents at 298 K and 1 bar, at 25% CO 2 and 75% N 2 flue gas conditions as a function of CO 2 uptake at 298 K and 1 bar, in mmol g −1 , with this work. 11,27-29,52, [99][100][101][102][103][104][105][106][107][108][109] This journal is © The Royal Society of Chemistry 2024 adsorbents reported in the literature to date for 298 K and 1 bar operating conditions. Cellulose-silica composites, calcined at over 1000 °C, have been reported to have better adsorption capacity, yet the selectivity was lower.…”
Section: Adsorption Isotherms and Regenerationmentioning
confidence: 99%
“…7 Comparison of selectivity of CO 2 /N 2 of 3D-structured adsorbents at 298 K and 1 bar, at 25% CO 2 and 75% N 2 flue gas conditions as a function of CO 2 uptake at 298 K and 1 bar, in mmol g −1 , with this work. 11,27-29,52, [99][100][101][102][103][104][105][106][107][108][109] This journal is © The Royal Society of Chemistry 2024 adsorbents reported in the literature to date for 298 K and 1 bar operating conditions. Cellulose-silica composites, calcined at over 1000 °C, have been reported to have better adsorption capacity, yet the selectivity was lower.…”
Section: Adsorption Isotherms and Regenerationmentioning
confidence: 99%
“…Organic aerogels can be made from Resorcinol/Formaldehyde (RF) [ 53 , 54 , 55 , 56 ], 2,4-dihydroxybenzoic acid (DHBA)/F [ 57 ], Phenol/Formaldehyde (P/F), Melamine/F (MF) [ 58 ], Polyurethane-Dichloromethane [ 59 ], Cresol/Formaldehyde (CF) [ 60 ], RF/CTAB [ 55 ], Pararosaniline base (PAB) and 1,3,5-triformylbenzene (TFB), Phloroglucinol-formaldehyde (FPOL) [ 61 ], Phloroglucinol-terephthalaldehyde (TPOL) [ 61 ], Poly(vinyl alcohol) PVA aerogels [ 62 ], Carbon nanotubes (CNT) [ 63 ], and Graphene [ 64 , 65 , 66 , 67 , 68 , 69 , 70 ]. Different catalysts are usually used to prepare RF aerogel [ 71 ].…”
Section: Organic Aerogelsmentioning
confidence: 99%
“…Oxidation, and other side reactions, may occur that affect the performance of these aerogels due to amine volatilisation and urea formation. The maximum amine loading in the impregnation of carbon aerogels can be higher than 85% wt, without blocking the pores for CO 2 diffusion into the bulk of the adsorbent [ 63 ].…”
Section: Organic Aerogelsmentioning
confidence: 99%
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“…3 The risk of climatic response grows with increasing concentrations of CO 2 . 4 From the Tokyo Protocol (1997) and the Paris Agreement (2016), the use of carbon capture and storage (CCS) technology has been proposed to reduce the levels of atmospheric CO 2 to mitigate climate change, 5 especially by focusing on curbing the largest source of CO 2 emissions, that is, the anthropogenic combustion of gas produced by burning fossil fuels. 6 In recent decades, a series of advances have been made in CCS technology.…”
Section: ■ Introductionmentioning
confidence: 99%