CO<sub>2</sub> Capture Using Phase-Changing Sorbents

Perry, Robert J.; Wood, Benjamin R.; Genovese, Sarah; O’Brien, Michael J.; Westendorf, Tiffany; Meketa, Matthew L.; Farnum, Rachel; McDermott, Joseph P.; Sultanova, Irina; Perry, T.; Vipperla, Ravikumar; Wichmann, Lisa A.; Enick, Robert M.; Hong, Lei; Tapriyal, Deepak

doi:10.1021/ef300079w

Cited by 45 publications

(76 citation statements)

References 36 publications

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“…Numerous sorbents have been developed for postcombustion CO 2 capture, which include alkanolamines (Rochelle, 2009;Rodriguez et al, 2011;Bishnoi and Rochelle, 2002;Rainbolt et al, 2011;Faramarzi et al, 2009), diamines (Zhou et al, 2010;Speyer et al, 2010), chilled ammonia (Peltier, 2008;Darde et al, 2010), CO 2 -binding organic liquids Zhang et al, 2013;Mathias et al, 2013), non-amine based solvents (Li et al, 2005;Chang et al, 2013), ionic liquids (Bates et al, 2002;Bara et al, 2009;Shannon et al, 2013), and phase-changing sorbents (Perry et al, 2010(Perry et al, , 2012. Monoethanolamine (MEA) has been the most extensively studied solvent for CO 2 capture applications (Rochelle, 2009;Liu et al, 1999;Freguia and Rochelle, 2003;Fan et al, 2009;Conway et al, 2011;Han et al, 2011;Zhu et al, 2012;Supap et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Lee

You

et al. 2014

International Journal of Greenhouse Gas Control

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Section: Introductionmentioning

confidence: 99%

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Lee

You

et al. 2014

International Journal of Greenhouse Gas Control

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“…(a)13 C and (b) 1 H NMR spectra of CO 2 -loaded SSA solution. Note that the peak at 4.63 ppm in panel b corresponds to the semi-deuterated water (HDO).…”

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confidence: 99%

Nuclear Magnetic Resonance Studies of CO₂ Absorption and Desorption in Aqueous Sodium Salt of Alanine

Wang

Akhmedov²,

Duan

et al. 2015

Energy Fuels

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For the first time, speciation evolution in aqueous sodium salt of alanine (SSA) solution during both CO 2 absorption and desorption has been investigated via nuclear magnetic resonance (NMR) spectroscopy. Results suggest that amine, carbamate, and bicarbonate are the main species formed in the solvent system. During CO 2 absorption, deprotonated alanine (Ala) reacts with CO 2 first to form carbamate, which subsequently hydrolyzes into bicarbonate. At higher CO 2 loadings (∼0.6 mol/mol of Ala), it appears that bicarbonate is dominant. Interestingly, the carbamate concentration in the SSA solution increases first and then decreases slightly during CO 2 desorption, and the amount of carbamate after CO 2 desorption is more than that at the end of the CO 2 absorption, thus reducing the desorption efficiency. Furthermore, the species distributions have also been compared to those of the commercial monoethanolamine (MEA) absorbent, revealing that the main difference between SSA and MEA systems is the hydrolysis rate of carbamate. Determination of the species formed is a first step to understand the chemistry of the solvent system, which may facilitate developing more efficient and energy-saving solvents for CO 2 capture and sequestration.

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“…It is a liquid characterised by a relatively high boiling point (265°C) and low viscosity (4 cP at 25°C). The carbonation product is GAP-0 carbamate which relatively rapidly precipitates [7]. By increasing temperature the GAP-0 carbamate is decomposed into CO 2 and the GAP-0 solvent suitable for reuse.…”

Section: Practical Examplesmentioning

confidence: 99%

“…A non-volatility property simplifies the CO 2 stripping process (there is no need for evaporated solvent separation) thereby decreasing OPEX and CAPEX. The GAP-0 based process is able to reduce energy requirements by up to 50% compared to MEA (with concentration of 30%) [7,8]. Since GAP-0 is less reactive towards CO 2 than MEA, the energy requirements reduction is greater under concentrated CO 2 gas stream conditions, i.e.…”

Section: Practical Examplesmentioning

confidence: 99%

Useful Mechanisms, Energy Efficiency Benefits, and Challenges of Emerging Innovative Advanced Solvent Based Capture Processes

Budzianowski¹

2016

Green Energy and Technology

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Innovative advanced solvent based capture processes (ASBCPs) employing sophisticated separation mechanisms have emerged as essential solutions that may dramatically reduce high energy requirement of CO 2 separation in capture plants. This study systematically characterises useful mechanisms of several such ASBCPs, being mostly at relatively low technology readiness levels. Based on improved understanding of these emerging ASBCPs it is shown how they can contribute to achieving energy efficiency benefits and thus increase CO 2 capture efficiency. It is followed by an analysis of practical examples of all ASBCPs recently presented in academic and patent literature. Finally, major challenges of discussed emerging ASBCPs are identified showing potential directions for further research and development. Overall, innovative ASBCPs employ very different mechanisms translating to different energy efficiency benefits in various CO 2 capture applications. The provided technological account along with the identified challenges may be useful for capture process developers which will be able to bring the most promising ASBCPs to higher technology readiness levels and finally they can be employed in the practice. Nomenclature 5OCB4,4′-pentyloxy cyanobiphenyl 7OCB 4,4′-heptyloxy cyanobiphenyl AA Aqueous ammonia AAS Amino acid salt ASBCP Advanced solvent based capture process BDA 1,4-butanediamine BTCA Benzotriazole-5-carboxylic acid

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CO₂ Capture Using Phase-Changing Sorbents

Cited by 45 publications

References 36 publications

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Nuclear Magnetic Resonance Studies of CO₂ Absorption and Desorption in Aqueous Sodium Salt of Alanine

Useful Mechanisms, Energy Efficiency Benefits, and Challenges of Emerging Innovative Advanced Solvent Based Capture Processes

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CO2 Capture Using Phase-Changing Sorbents

Cited by 45 publications

References 36 publications

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Aqueous hydrazine as a promising candidate for capturing carbon dioxide

Nuclear Magnetic Resonance Studies of CO2 Absorption and Desorption in Aqueous Sodium Salt of Alanine

Useful Mechanisms, Energy Efficiency Benefits, and Challenges of Emerging Innovative Advanced Solvent Based Capture Processes

Contact Info

Product

Resources

About

CO₂ Capture Using Phase-Changing Sorbents

Nuclear Magnetic Resonance Studies of CO₂ Absorption and Desorption in Aqueous Sodium Salt of Alanine