Highly selective CO2/CH4 gas uptake by a halogen-decorated borazine-linked polymer

Reich, Thomas E.; Behera, Swayamprabha; Jackson, Karl T.; Jena, P.; El‐Kaderi, Hani M.

doi:10.1039/c2jm31123b

Cited by 91 publications

(76 citation statements)

References 42 publications

(35 reference statements)

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“…As shown in Table S1 in the Supporting Information, the Q 0 value of CO 2 in PSN‐3 obtained by Virial equations (Figure S8, Supporting Information) was 36.7 kJ mol −1 . This is superior to cyanate resins CEs (32.6−39.7),[11b,c] HCPs (20−24 kJ mol −1 ), polybenzimidazoles (26.5−28.8 kJ mol −1 ), BLPs (20.2−28.3 kJ mol −1 ), and PPFs (21.8−29.2 kJ mol −1 ). [7a]…”

Section: Resultsmentioning

confidence: 99%

Microporous Poly(Schiff Base) Constructed from Tetraphenyladamantane Units for Adsorption of Gases and Organic Vapors

Zhang

Wang

2014

Macromol. Rapid Commun.

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A new microporous poly(Schiff base) (PSN-3) is constructed from 1,3,5,7-tetrakis(4-formylphenyl)adamantane and 1,3,5,7-tetrakis(4-aminophenyl)adamantane through an A4 -A4 ' reaction. The surface and internal morphologies of porous PSN-3 are examined by FE-SEM and HR-TEM. PSN-3 exhibits a BET surface area of 865 m(2) g(-1) with a major pore size around 0.6 nm. Moreover, PSN-3 can uptake 1.32 wt% H2 (77 K/1 bar), 13.6 wt% CO2 (273 K/1 bar), 80.5 wt% benzene, and 63.7 wt% cyclohexane (298 K/0.9 bar). The adsorption selectivities for CO2/N2, CO2/CH4, benzene/N2, and benzene/H2O are 88, 16, 267, and 19, respectively. The high adsorption capacities and selectivities for gases and vapors make PSN-3 a promising candidate for H2 storage, CO2 capture, and recovery of organic pollutants.

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Section: Resultsmentioning

confidence: 99%

Microporous Poly(Schiff Base) Constructed from Tetraphenyladamantane Units for Adsorption of Gases and Organic Vapors

Zhang

Wang

2014

Macromol. Rapid Commun.

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“…The PSN-1 (0.89 wt %) under the same conditions. [30][31][32][33][34][35][36] The im-provedH 2 sorptionc an be linked to the presence of metal-hydrogen interactions, in which the Fe 2 + sites are essentially availablef or H 2 binding. The FMAP networks can essentially Chem.E ur.J.2015, 21,13357 -13363 www.chemeurj.org separatet he charge from the Fe center,t husp roviding strong stabilization of the H 2 molecule and dramatically improving the H 2 uptake.…”

Section: Resultsmentioning

confidence: 99%

“…Compared with metal-free polymers BLP-10(Cl) (7.46 kJ mol À1 ), PAF-4 (6.3 kJ mol À1 ), and PPN-3 (5.51 kJ mol À1 ), the ferrocene-functionalized polymer shows ah igh heat of adsorptionf or H 2 at low loadings, suggesting ap romisinga pproach for designing porousm aterials with Q st capacity. [33,34,37] CH 4 ,aprimary component of natural gas, because of higher hydrogen-to-carbonr atio makes it cleaner than petrol (which has lower carbon emission). Most importantly,C H 4 is also abundant and inexpensive compared to conventional fossil fuels, such as gasoline and diesel.…”

Section: Resultsmentioning

confidence: 99%

Metal Microporous Aromatic Polymers with Improved Performance for Small Gas Storage

Zhang

et al. 2015

Chemistry A European J

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A novel metal-doping strategy was developed for the construction of iron-decorated microporous aromatic polymers with high small-gas-uptake capacities. Cost-effective ferrocene-functionalized microporous aromatic polymers (FMAPs) were constructed by a one-step Friedel-Crafts reaction of ferrocene and s-triazine monomers. The introduction of ferrocene endows the microporous polymers with a regular and homogenous dispersion of iron, which avoids the slow reunion that is usually encountered in previously reported metal-doping procedures, permitting a strong interaction between the porous solid and guest gases. Compared to ferrocene-free analogues, FMAP-1, which has a moderate BET surface area, shows good gas-adsorption capabilities for H2 (1.75 wt % at 77 K/1.0 bar), CH4 (5.5 wt % at 298 K/25.0 bar), and CO2 (16.9 wt % at 273 K/1.0 bar), as well as a remarkably high ideal adsorbed solution theory CO2 /N2 selectivity (107 v/v at 273 K/(0-1.0) bar), and high isosteric heats of adsorption of H2 (16.9 kJ mol(-1) ) and CO2 (41.6 kJ mol(-1) ).

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“…Previous studies have shown that the IAST can predict mixture gas adsorption in many nanoporous materials, including porous-organic frameworks424344. The single-component isotherms were fitted using a dual-site Langmuir-Freundlich equation (1): Here, p is the pressure of the bulk gas at equilibrium with the adsorbed phase (kPa), q is the adsorbed amount per mass of adsorbent (mmol/g), q m1 and q m2 are the saturation capacities of sites 1 and 2 (mmol/g), b 1 and b 2 are the affinity coefficients of sites 1 and 2 (1/kPa), and n 1 and n 2 represent the deviations from an ideal homogeneous surface.…”

Section: Methodsmentioning

confidence: 99%

Novel Porphyrinic Porous Organic Frameworks for High Performance Separation of Small Hydrocarbons

Ren

Meng

et al. 2013

Sci Rep

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A series of Porphyrinic-CTF materials are synthesized under ionothermal condition with high surface areas (>3200 m2/g) and tunable pore sizes. The ZnP-CTFs exhibit high adsorption capacities and selectivity towards C3H8, and C2H6 over CH4 as IAST prediction. Furthermore, we explore the utility of ZnP-CTF for gas chromatographic separation of the small hydrocarbons mixture based on their different van der waals interactions and polarizability. More importantly, the fast breakthrough test further proves that the ZnP-CTF-400 and ZnP-CTF-500 can separate the small hydrocarbons under kinetic dynamic conditions.

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Highly selective CO2/CH4 gas uptake by a halogen-decorated borazine-linked polymer

Cited by 91 publications

References 42 publications

Microporous Poly(Schiff Base) Constructed from Tetraphenyladamantane Units for Adsorption of Gases and Organic Vapors

Microporous Poly(Schiff Base) Constructed from Tetraphenyladamantane Units for Adsorption of Gases and Organic Vapors

Metal Microporous Aromatic Polymers with Improved Performance for Small Gas Storage

Novel Porphyrinic Porous Organic Frameworks for High Performance Separation of Small Hydrocarbons

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