Screening Test of Solid Amine Sorbents for CO<sub>2</sub> Capture

Lee, Seungmoon; Filburn, Thomas; Gray, McMahan L.; Park, Jin Won; Song, Ho Jun

doi:10.1021/ie8006984

Cited by 107 publications

(71 citation statements)

References 24 publications

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“…Filburn's group impregnated a variety of amines including MEA, DETA, TEA, PEI, TEPA, ethyleneamine (E-100), TEPAN and E-100AN (AN denotes the reactionmodifies amine with acrylonitrile) into a polymeric material polymethylmethacrylate (PMMA) (Filburn et al, 2005;Lee et al, 2008). Among their prepared adsorbents, the TEPA-impregnated PMMA exhibited an adsorption capacity of 21.45 mmol/g at 23°C for the N 2 gas containing 15% CO 2 and 2.6% H 2 O.…”

Section: Fig 3 (Continued)mentioning

confidence: 99%

A Review of CO2 Capture by Absorption and Adsorption

Huang

Tan

2012

Aerosol Air Qual. Res.

1,424

875

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Global warming resulting from the emission of greenhouse gases, especially CO 2 , has become a widespread concern in the recent years. Though various CO 2 capture technologies have been proposed, chemical absorption and adsorption are currently believed to be the most suitable ones for post-combustion power plants. The operation of the chemical absorption process is reviewed in this work, together with the use of absorbents, such as the ionic liquid, alkanolamines and their blended aqueous solutions. The major concerns for this technology, including CO 2 capture efficiency, absorption rate, energy required in regeneration, and volume of absorber, are addressed. For adsorption, in addition to physical adsorbents, various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes are reviewed in this work. The major concerns for selection of adsorbent, including cost, adsorption rate, CO 2 adsorption capacity, and thermal stability, are compared and discussed. More effective and less energy-consuming regeneration techniques for CO 2 -loaded adsorbents are also proposed. Future works for both absorption and adsorption are suggested.

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Section: Fig 3 (Continued)mentioning

confidence: 99%

A Review of CO2 Capture by Absorption and Adsorption

Huang

Tan

2012

Aerosol Air Qual. Res.

1,424

875

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“…176 The formation of these acrylonitrile adducts decreases the absorption rate but increases the rate of CO 2 desorption.…”

Section: Functional Groups For Co 2 Capturementioning

confidence: 99%

“…175 Solid 1:1 adducts of tetraethylenepentamine (TEPA) and ethyleneamine E-100 (the mixture of ethyleneimine oligomers with n = 4 -6) with acrylonitrile also show higher cyclic capacities than individual amines. 176 The formation of these acrylonitrile adducts decreases the absorption rate but increases the rate of CO 2 desorption. 176 Diglycolamine catalyzes the CO 2 absorption by aqueous morpholine that is consistent with the zwitterion mechanism.…”

Section: Functional Groups For Co 2 Capturementioning

confidence: 99%

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Novel High Capacity Oligomers for Low Cost CO2 Capture

Perry¹,

Grocela-Rocha²,

O’Brien³

et al. 2010

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The novel concept of using a molecule possessing both physi-sorbing and chemi-sorbing properties for post-combustion CO2 capture was explored and mixtures of aminosilicones and hydroxyterminated polyethers had the best performance characteristics of materials examined. The optimal solvent composition was a 60/40 blend of GAP-1/TEG and a continuous bench-top absorption/desorption unit was constructed and operated. Plant and process models were developed for this new system based on an existing coal-fired power plant and data from the laboratory experiments were used to calculate an overall COE for a coal-fired power plant fitted with this capture technology. A reduction in energy penalty, from 30% to 18%, versus an optimized 30% MEA capture system was calculated with a concomitant COE decrease from 73% to 41% for the new aminosilicone solvent system. 3 Executive SummaryThe novel concept of using a molecule possessing both physi-sorbing and chemi-sorbing properties for post-combustion CO2 capture was explored. A variety of candidate materials with physi-sorbing backbones and chemically reactive peripheral groups were considered with the final selection primarily focusing on aminosilicones. A small effort was also devoted to derivatized plant oils.None of the plant oil derivatives were effective in absorbing CO2 in laboratory experiments. Model reactions suggest that both intra-molecular H-bonding between adjacent hydroxyl and amino groups and potential micelle formation suppressed reactions with CO2. This route was abandoned in favor of the aminosilicones.A variety of aminosilicones with differing architectures and type and placement of amine groups were examined both experimentally and computationally for physical properties as well as CO2 capture efficacy. Modeling indicated that the heat reaction of sterically hindered amines with CO2 was lower than for unhindered amines and that less basic amines also decreased the heat of reaction. This provided options to tune the heat of reaction for optimal plant performance. Physical property predictions were also made for viscosity, vapor pressure, density and CO2 solubility. Limited experimental data confirmed the accuracy of the density and solubility models as well as trend predictability in heats of reaction. However, viscosity predictions were not accurately modeled and vapor pressure data was unavailable.Synthetically, GEN 1 aminosilicone solvents with linear, branched, cyclic and star architectures were made that possessed mono and di-amine groups while other solvent candidates had varying degrees of steric hindrance. Oligomers as well as discrete small molecules were prepared and evaluated. These included solvents with covalently bound polyether units. CO2-capture experiments were performed using both high throughput screening (HTS) techniques as well as small-scale laboratory testing. Mass transfer issues prevented the HTS methodology from being as useful as anticipated. However, efficient mixing on the lab-scale provided reliable data. These experiment...

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“…This is due to the low heat capacity of solid sorbents [24,25]. The major disadvantage of the current solid sorbents is their low CO 2 adsorption capacity (i.e., lmol CO 2 /gsorbent) and cost.…”

Section: Introductionmentioning

confidence: 99%

Oxide‐supported tetraethylenepentamine for CO₂ capture

Fisher¹,

Tanthana²,

Chuang³

2009

Env Prog and Sustain Energy

103

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CO 2 capture capacity of tetraethylenepentamine (TEPA) supported on beta zeolite, SiO 2 , and Al 2 O 3 has been studied by transient flow switching approach and temperature programmed desorption (TPD) technique coupled with diffuse infrared reflectance Fourier transform spectroscopy and mass spectrometry (MS). TEPA/beta zeolite shows the highest CO 2 capture capacity. Adsorbed CO 2 on TEPA/beta zeolite can be characterized as weakly and strongly adsorbed CO 2 . The former desorbs when CO 2 partial pressure decreases; the latter desorbs during TPD. Strongly adsorbed CO 2 is in the form of carbonates interacting with the NÀ ÀH functional groups of TEPA. This interaction caused the NÀ ÀH and CÀ ÀH intensity to decrease. TEPA/Al 2 O 3 showed the lowest CO 2 capture capacity. The infrared results revealed that TEPA/Al 2 O 3 possessed high content of H 2 O, which inhibited CO 2 adsorption.

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Screening Test of Solid Amine Sorbents for CO₂ Capture

Cited by 107 publications

References 24 publications

A Review of CO2 Capture by Absorption and Adsorption

A Review of CO2 Capture by Absorption and Adsorption

Novel High Capacity Oligomers for Low Cost CO2 Capture

Oxide‐supported tetraethylenepentamine for CO₂ capture

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Screening Test of Solid Amine Sorbents for CO2 Capture

Cited by 107 publications

References 24 publications

A Review of CO2 Capture by Absorption and Adsorption

A Review of CO2 Capture by Absorption and Adsorption

Novel High Capacity Oligomers for Low Cost CO2 Capture

Oxide‐supported tetraethylenepentamine for CO2 capture

Contact Info

Product

Resources

About

Screening Test of Solid Amine Sorbents for CO₂ Capture

Oxide‐supported tetraethylenepentamine for CO₂ capture