Preparation and characterization of novel CO2 “molecular basket” adsorbents based on polymer-modified mesoporous molecular sieve MCM-41

Xu, Xin; Song, Chunshan; Andrésen, John M.; Miller, Bruce G.; Scaroni, Alan W.

doi:10.1016/s1387-1811(03)00388-3

Cited by 708 publications

(674 citation statements)

References 37 publications

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“…These classes of porous materials generally have high capacity and low energy cost for regeneration, but lose their efficiency when exposed to water vapor, as is the case in combustion gases (11,12). To combine the high affinity of MEA and energy-efficient regeneration of a dry system, new materials with amines implanted in the pores of solid materials are being investigated and show some promise for improved performance (13)(14)(15). However, the challenge of selective capture of carbon dioxide remains, especially in the presence of water (16,17).…”

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confidence: 99%

Designed amyloid fibers as materials for selective carbon dioxide capture

Furukawa

Deng

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

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New materials capable of binding carbon dioxide are essential for addressing climate change. Here, we demonstrate that amyloids, self-assembling protein fibers, are effective for selective carbon dioxide capture. Solid-state NMR proves that amyloid fibers containing alkylamine groups reversibly bind carbon dioxide via carbamate formation. Thermodynamic and kinetic capture-and-release tests show the carbamate formation rate is fast enough to capture carbon dioxide by dynamic separation, undiminished by the presence of water, in both a natural amyloid and designed amyloids having increased carbon dioxide capacity. Heating to 100 °C regenerates the material. These results demonstrate the potential of amyloid fibers for environmental carbon dioxide capture.

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confidence: 99%

Designed amyloid fibers as materials for selective carbon dioxide capture

Furukawa

Deng

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

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“…Zeolites with highly crystalline structure, high surface area, and 3-dimensional pore structures by altering their composition as Si/Al ratio have been widely applied as CO 2 adsorbents (Yu et al, 2012;Lee et al, 2013). Mesoporous molecular sieves (Gil et al, 2011;Wang et al, 2012;Xu et al, 2003) are widely used as adsorbents for gas separation because of the high surface area, large pore volume and tunable pore size. Metal-organic frameworks (MOFs) (Cho et al, 2012;Ganesh et al, 2014;Xian et al, 2015) have caused extensive concerns in the recent years due to the notably high surface area, controllable pore structure and pore surface property, and relevant researches on this field of CO 2 adsorption are on the rise.…”

Section: Introductionmentioning

confidence: 99%

CO2 Capture Behaviors of Amine-Modified Resorcinol-Based Carbon Aerogels Adsorbents

Xie

Wang

2017

Aerosol Air Qual. Res.

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Activated carbon aerogel (CA)-based amine-loaded adsorbent has been successfully developed for CO 2 capture. The adsorbents were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), N 2 adsorption/desorption and thermogravimetric analysis (TGA). The CO 2 adsorption performance was tested by the fixed bed system at 5% CO 2 concentration. The effects of the mass ratio of KOH to CA, type of amine, amine loadings, addition of polyethylene glycol (PEG) or surfactants and adsorption temperature on the CO 2 capture performance of amine-loaded activated CA as well as the regeneration capability were examined. The results show that the adsorbents effectively remove 5% CO 2 from gas mixtures. The optimum adsorption temperature and amine loadings of polyethyleneimine (PEI)-loaded activated CA are 75°C and 55 wt.% respectively at the activation mass ratio KOH to CA of 1. Under these optimum conditions, the PEI-loaded activated CA reaches the highest adsorption capacity of 2.06 mmol g -1 adsorbent. Addition of PEG facilitates the CO 2 adsorption. Suyadal's and Yasyerli's deactivation models both fit the experimental breakthrough curves of tetraethylenepentamine (TEPA)-loaded activated CA better than that of PEI-loaded activated CA. The adsorption kinetics nonlinear fitting results show that the adsorption process follows Bangham model.

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“…For instant, amine based chemical absorption has been used commercially in large scale separation for CO 2 capturing plants throughout the world [14][15][16]. Aqueous amine solutions such as monoethanolamine (MEA) [13], diethanolamine (DEA) and methyldiethanolamine (MDEA) are the most widely used solvents for amine based chemical absorption.…”

Section: Introductionmentioning

confidence: 99%

“…Solid CO 2 adsorption processes require less space and lower energy, cost effective and easy to handle in a wide range of temperature and pressure [16,[18][19][20][21][22]. Moreover, this alternative approach offers few advantages such as less toxic, non corrosive nature [23] and high CO 2 capacity captured.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Tahari

Yarmo

2014

AIP Conference Proceedings

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Abstract. Silica dioxide catalyst (SiO 2 ) can be modified by impregnating amine-containing compounds to improve the CO 2 adsorption capacity. Four type of amines, i.e., monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and octadecylamine (ODA) were supported on silica dioxide particles. The amine-modified samples were characterized using FTIR, BET and FESEM. All the prepared solid sorbents exhibited type IV isotherm with hysteresis loop. Specific surface areas of the sorbents were significantly reduced due to blocking of micropores and mesopores by the amine compounds. Reactivity of solid sorbents towards CO 2 was evaluated using isothermal CO 2 adsorption by BET. CO 2 adsorption capacity increased with the weight percent of amine compounds loaded onto the SiO 2 . 15 and 25 wt % MEA/SiO 2 and 25 wt % ODA/SiO 2 sorbents showed greater CO 2 adsorption capacities compared to the virgin sample (SiO 2 ). This study shows that the order of adsorption capacity for the four types of amines was MEA (4.05 wt % CO 2 /adsorbent) > ODA (2.45 wt % CO 2 /adsorbent) > DEA (1.71 wt % CO 2 /adsorbent) > TEA (0.91 wt % CO 2 /adsorbent). CO 2 uptakes by ODA/SiO 2 sorbents were higher than DEA/SiO 2 and TEA/SiO 2 is mainly due to their smaller pore volume and pore width of the adsorbent, therefore, greater interactions of CO 2 -ODA in pores. MEA/SiO 2 has the highest ability in capturing CO 2 because of the increasing steric hindrance of long chain ODA and alkyl substituent on DEA and TEA.

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Preparation and characterization of novel CO2 “molecular basket” adsorbents based on polymer-modified mesoporous molecular sieve MCM-41

Cited by 708 publications

References 37 publications

Designed amyloid fibers as materials for selective carbon dioxide capture

Designed amyloid fibers as materials for selective carbon dioxide capture

CO2 Capture Behaviors of Amine-Modified Resorcinol-Based Carbon Aerogels Adsorbents

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

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