Amidoximes: promising candidates for CO2 capture

Zulfiqar, Sonia; Karadaş, Ferdi; Park, Joonho; Deniz, Erhan; Stucky, Galen D.; Jung, Yousung; Atilhan, Mert; Yavuz, Cafer T.

doi:10.1039/c1ee02264d

Cited by 83 publications

(70 citation statements)

References 34 publications

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“…CO 2 scrubbing by ethanolic aqueous amines 27 is yet to be challenged as a practical solution, despite the claims that numerous porous solids have better physicochemical properties and lower energy penalties 2,28 . In order to avoid energy-intensive CO 2 capture, we have to resort to physisorptive processes (enthalpy of adsorption, Qo40 kJ mol À 1 ) rather than chemisorptive ones (Q440 kJ mol À 1 ) (ref.…”

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Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

et al. 2013

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Post-combustion CO 2 capture and air separation are integral parts of the energy industry, although the available technologies remain inefficient, resulting in costly energy penalties. Here we report azo-bridged, nitrogen-rich, aromatic, water stable, nanoporous covalent organic polymers, which can be synthesized by catalyst-free direct coupling of aromatic nitro and amine moieties under basic conditions. Unlike other porous materials, azo-covalent organic polymers exhibit an unprecedented increase in CO 2 /N 2 selectivity with increasing temperature, reaching the highest value (288 at 323 K) reported to date. Here we observe that azo groups reject N 2 , thus making the framework N 2 -phobic. Monte Carlo simulations suggest that the origin of the N 2 phobicity of the azo-group is the entropic loss of N 2 gas molecules upon binding, although the adsorption is enthalpically favourable. Any gas separations that require the efficient exclusion of N 2 gas would do well to employ azo units in the sorbent chemistry.

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Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

et al. 2013

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“…[6][7][8] Liquid-amine, which is the most common adsorbent in current industrial processes for CO 2 capture, suffers from relatively low efficiency, equipment corrosion, solvent loss, and toxicity. [9][10][11][12] Alternatively, various solid materials have been proposed as attractive adsorbents for CO 2 capture, including metal-organic frameworks (MOFs), [13][14][15][16][17] aluminum nitride (AlN), 18 carbon, [19][20][21] hexagonal boron nitride (h-BN), 22 and silicon carbide (SiC) 23,24 nanostructures. However, the difficulty of regeneration due to the large adsorption energy, which generally demands high temperatures to release captured CO 2 , significantly hinders the practical application of such materials.…”

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Materials design for electrocatalytic carbon capture

Tan¹,

Tahini²,

Smith³

2016

APL Materials

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We discuss our philosophy for implementation of the Materials Genome Initiative through an integrated materials design strategy, exemplified here in the context of electrocatalytic capture and separation of CO2 gas. We identify for a group of 1:1 X–N graphene analogue materials that electro-responsive switchable CO2 binding behavior correlates with a change in the preferred binding site from N to the adjacent X atom as negative charge is introduced into the system. A reconsideration of conductive N-doped graphene yields the discovery that the N-dopant is able to induce electrocatalytic binding of multiple CO2 molecules at the adjacent carbon sites.

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“…This strategy provides a direction in the design of porous membrane materials for economic CO 2 capture processes. Amidoximes are known to be CO 2 -philic [114], and functionalization of PIM-1 by amidoxime will create sites that have strong affinity toward CO 2 through its high quadruple moment. In 2012, Patel and Yavuz [115] synthesized the amidoxime-PIM-1 successfully through a conventional and non-invasive synthetic route (Fig.…”

Section: Polymers Of Intrinsic Microporositymentioning

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Microporous Organic Polymers for Carbon Dioxide Capture

Luo

Tan

2014

Green Chemistry and Sustainable Technology

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Microporous organic polymers (MOPs) are a unique class of porous materials consisting solely of the light elements (C, H, O, N, etc.). A series of vivid characteristics of MOPs, such as high-specific surface area, good physicochemical stability, diverse pore dimensions, topologies, and chemical functionalities, make them suitable adsorbents for CO 2 capture. In this chapter, MOPs are categorized into four classes according to the types of organic reactions and the chemical structures of the resulting materials: hypercrosslinked polymers (HCPs), covalent organic frameworks (COFs), polymers of intrinsic microporosity (PIMs), and conjugated microporous polymers (CMPs). For each type of the polymer network, the state-of-the-art development in the design, synthesis, characterization, and the CO 2 sorption performance is reviewed. Strategies for controlling CO 2 uptake capacity and adsorption enthalpy via manipulation of surface area, pore size, and functionality are discussed in detail. These studies would open up many new possibilities for the development of the novel solid sorbents targeting the CO 2 capture process. It is expected that this chapter will not only summarize the main research activities in this field, but also find possible links between basic studies and practical applications. Abbreviations ACMPAcetylene gas mediated conjugated microporous polymers BA Benzyl alcohol BC Benzyl chloride BCMA 9,10-Bis(chloromethyl)anthracene

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Amidoximes: promising candidates for CO2 capture

Cited by 83 publications

References 34 publications

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

Materials design for electrocatalytic carbon capture

Microporous Organic Polymers for Carbon Dioxide Capture

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