Preparation and adsorption properties of polyethylenimine containing fibrous adsorbent for carbon dioxide capture

Li, Peiyuan; Zhang, Sujuan; Chen, Shuixia; Zhang, Qikun; Junjian, Pan,; Ge, Bingqing

doi:10.1002/app.27937

Cited by 48 publications

(30 citation statements)

References 23 publications

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“…With a 50 % relative humidity (RH, at 25 °C) in the gas flow during the adsorption and desorption step, the adsorption capacity increased to 97 mg

_{CO_{2}}

g −1 and remained constant over five adsorption/desorption cycles. A similar gain in CO 2 adsorption capacity under humid conditions has been observed previously by us and others . The co‐adsorption of CO 2 and moisture by silica‐supported amines is a complex process that is still being investigated.…”

Section: Resultsmentioning

confidence: 99%

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

et al. 2019

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CO2 adsorbents based on the reaction of pentaethylenehexamine (PEHA) or tetraethylenepentamine (TEPA) with propylene oxide (PO) were easily prepared in “one pot” by impregnation on a silica support in water. The starting materials were readily available and inexpensive, facilitating the production of the adsorbents on a large scale. The prepared polyamine/epoxide adsorbents were efficient in capturing CO2 and could be regenerated under mild conditions (50–85 °C). They displayed a much‐improved stability compared with their unmodified amine counterparts, especially under oxidative conditions. Leaching of the active organic amine became minimal or nonexistent after treatment with the epoxide. The adsorption as well as desorption kinetics were also greatly improved. The polyamine/epoxide adsorbents were able to capture CO2 from various sources including ambient air and indoor air with CO2 concentrations of only 400–1000 ppm. The presence of water, far from being detrimental, increased the adsorption capacity. Their use for indoor air quality purposes was explored.

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“…With a 50 % relative humidity (RH, at 25 °C) in the gas flow during the adsorption and desorption step, the adsorption capacity increased to 97 mg

_{CO_{2}}

Section: Resultsmentioning

confidence: 99%

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

et al. 2019

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“…Solid sorbents studied so far include supported amine sorbents,2a, 3a, 4 carbon-based amine sorbents,5 amines coated on glass fibers,3b, 6 zeolites,7 SiO 2 ,7 SBA-15,3a, 8 and MCM-41 9. The approaches to immobilize amines include 1) amine grafting, [3a, 4c][3b, 6] using aminosilanes, and 2) physical adsorption of amines on the support surface 8a, 9a, 10.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Investigation into Oxidative Degradation of Silica‐Supported Amine Sorbents for CO₂ Capture

2012

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Oxidative degradation characteristics of silica-supported amine sorbents with varying amounts of tetraethylenepentamine (TEPA) and polyethylene glycol (PEG; P200 or P600 represents PEG with molecular weights of 200 or 600) have been studied by IR and NMR spectroscopy. Thermal treatment of the sorbents and liquid TEPA at 100 °C for 12 h changed their color from white to yellow. The CO2 capture capacity of the TEPA/SiO2 sorbents (i.e., SiO2-supported TEPA with a TEPA/SiO2 ratio of 25:75) decreased by more than 60 %. IR and NMR spectroscopy studies showed that the yellow color of the degraded sorbents resulted from the formation of imide species. The imide species, consisting of NH associated with two C—O functional groups, were produced from the oxidation of methylene groups in TEPA. Imide species on the degraded sorbent are not capable of binding CO2 due to its weak basicity. The addition of P200 and P600 to the supported amine sorbents improved both their CO2 capture capacities and oxidative degradation resistance. IR spectroscopy results also showed that TEPA was immobilized on the SiO2 surface through hydrogen bonding between amine groups and the silanol groups of SiO2. The OH groups of PEG interact with NH2/NH of TEPA through hydrogen bonding. Hydrogen bonds disperse TEPA on SiO2 and block O2 from accessing TEPA for oxidation. Oxidative degradation resistance and CO2 capture capacity of the supported amine sorbents can be optimized through adjusting the ratio of hydroxyl to amine groups in the TEPA/PEG mixture.

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“…V V C 2011 American Institute of Chemical Engineers et al [22][23][24][25] and further developed by others. 34,35 It is highly desired to develop a solid amine sorbent with high performance and low cost for the large-scale CO 2 capture from the power station flue gas. However, most porous materials, such as MCM-41, SBA-15 and KIT-6, reported currently in literature for preparation of these solid amine sorbents are expensive and commercially unavailable.…”

Section: Introductionmentioning

confidence: 99%

Development of silica‐gel‐supported polyethylenimine sorbents for CO₂ capture from flue gas

Zhang

Wang

et al. 2011

AIChE Journal

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In order to reduce the sorbent preparation cost and improve its volume‐based sorption capacity, the use of an inexpensive and commercially available silica gel was explored as a support to prepare a solid polyethylenimine sorbent (PEI/SG) for CO2 capture from flue gas. The effects of the pore volume and particle size of the silica gels, molecular weight of polyethylenimine and amount of polyethylenimine loaded, sorption temperature and moisture in the flue gas on the CO2 sorption capacity of PEI/SG were examined. The sorption performance of the developed PEI/SG was evaluated by using a thermogravimetric analyzer and a fixed‐bed flow sorption system in comparison with the SBA‐15‐supported polyethylenimine sorbent (PEI/SBA‐15). The best PEI/SG sorbent showed a mass‐based CO2 sorption capacity of 138 mg‐CO2/g‐sorbent, which is almost the same as that of PEI/SBA‐15. In addition, the PEI/SG gave a high volume‐based sorption capacity of 83 mg‐CO2/cm3‐sorbent, which is higher than that of PEI/SBA‐15 by a factor of 2.6. © 2011 American Institute of Chemical Engineers AIChE J, 58: 2495–2502, 2012

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Preparation and adsorption properties of polyethylenimine containing fibrous adsorbent for carbon dioxide capture

Cited by 48 publications

References 23 publications

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

Spectroscopic Investigation into Oxidative Degradation of Silica‐Supported Amine Sorbents for CO₂ Capture

Development of silica‐gel‐supported polyethylenimine sorbents for CO₂ capture from flue gas

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Preparation and adsorption properties of polyethylenimine containing fibrous adsorbent for carbon dioxide capture

Cited by 48 publications

References 23 publications

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO2 Capture from Various Sources Including Air

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO2 Capture from Various Sources Including Air

Spectroscopic Investigation into Oxidative Degradation of Silica‐Supported Amine Sorbents for CO2 Capture

Development of silica‐gel‐supported polyethylenimine sorbents for CO2 capture from flue gas

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Product

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About

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO₂ Capture from Various Sources Including Air

Spectroscopic Investigation into Oxidative Degradation of Silica‐Supported Amine Sorbents for CO₂ Capture

Development of silica‐gel‐supported polyethylenimine sorbents for CO₂ capture from flue gas