Melamine-functionalized aromatic carbonyl-based polymer with high surface area for efficient CO2 capture

Ravi, Seenu; Choi, Yujin; Bae, Youn‐Sang

doi:10.1016/j.seppur.2023.123828

Cited by 8 publications

(3 citation statements)

References 60 publications

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“…The Q st values for the adsorption of CO 2 by M1 and M2 were found to be 33.1 kJ/mol and 33.6 kJ/mol, respectively. This indicates that the adsorption process is of physisorption in nature (Khosrowshahi et al, 2022;Ravi et al, 2023). Another feature that an adsorbent should possess is high selectivity.…”

Section: Porosity Of the 3d Porous Polymersmentioning

confidence: 99%

3D porous polymers for selective removal of CO2 and H2 storage: experimental and computational studies

Al-Bukhari,

Abdulazeez,

Abdelnaby

et al. 2023

Front. Chem.

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In this article, newly designed 3D porous polymers with tuned porosity were synthesized by the polycondensation of tetrakis (4-aminophenyl) methane with pyrrole to form M1 polymer and with phenazine to form M2 polymer. The polymerization reaction used p-formaldehyde as a linker and nitric acid as a catalyst. The newly designed 3D porous polymers showed permanent porosity with a BET surface area of 575 m2/g for M1 and 389 m2/g for M2. The structure and thermal stability were investigated by solid 13C-NMR spectroscopy, Fourier-transform infrared (FT-IR) spectroscopy, and thermogravimetric analysis (TGA). The performance of the synthesized polymers toward CO2 and H2 was evaluated, demonstrating adsorption capacities of 1.85 mmol/g and 2.10 mmol/g for CO2 by M1 and M2, respectively. The importance of the synthesized polymers lies in their selectivity for CO2 capture, with CO2/N2 selectivity of 43 and 51 for M1 and M2, respectively. M1 and M2 polymers showed their capability for hydrogen storage with a capacity of 66 cm3/g (0.6 wt%) and 87 cm3/g (0.8 wt%), respectively, at 1 bar and 77 K. Molecular dynamics (MD) simulations using the grand canonical Monte Carlo (GCMC) method revealed the presence of considerable microporosity on M2, making it highly selective to CO2. The exceptional removal capabilities, combined with the high thermal stability and microporosity, enable M2 to be a potential material for flue gas purification and hydrogen storage.

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Section: Porosity Of the 3d Porous Polymersmentioning

confidence: 99%

3D porous polymers for selective removal of CO2 and H2 storage: experimental and computational studies

Al-Bukhari,

Abdulazeez,

Abdelnaby

et al. 2023

Front. Chem.

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“…Physical adsorption has been recognized as a promising alternative technique to traditional methods (amine solution adsorbance and cryogenic distillation) for CO 2 capture, considering the energy cost and environmental protection. − As the key role in the physical adsorption technique, many kinds of nanopore adsorbents have been designed for different gas separation tasks, such as metal–organic frameworks (MOFs), − porous organic polymers (POPs), , zeolites, − and activated carbons (ACs). , However, in the practical pressure swing adsorption (PSA) process, only zeolites and activated carbon have been successfully adapted after they are reshaped, while most of the MOFs and POPs have been prevented from real application by their high preparation process cost, powder morphology, and weak strength. , …”

Section: Introductionmentioning

confidence: 99%

Hyper-Cross-Linked Resin Modified by a Micropore Polymer for Gas Adsorption and Separation

Wang,

Chen,

Yao

et al. 2024

Langmuir

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“…With this background, it is urgent to develop a novel resin modified with nonamine groups for CO 2 adsorption. Generally, the F-containing (–F, –CF 3 ) and O-containing (–COOH, CO, –OH, and NO 2 ) groups are the most popular nonamine functional groups used for the modification of nanoporous materials for CO 2 adsorption. − Only a few studies have been carried out to study the effect of O-containing groups on spherical hyper-crosslinked resins for gas adsorption, such as the PDV-pc series . In addition, research on the effect of different kinds of O-containing groups on the BET surface area, nanopore diameter, and adsorption mechanism of hyper-crosslinked resins for different gas adsorbates is still deficient.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Oxygen-Containing Groups on the Nanopore Diameter of Hyper-Crosslinked Resins for Gas Adsorption/Separation

Wang,

Chen,

Yao

et al. 2023

ACS Appl. Nano Mater.

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Few studies have been conducted on the effect of nonamine groups on the nanopore environment and gas adsorption/separation ability of normal spherical hyper-crosslinked resins. Here, hyper-crosslinked resins (HCP@COOH and HCP@ CO), modified with a COOH-containing structure (A) and a C� O-containing structure (B), were synthesized by the Friedel−Crafts acylation reaction. According to static adsorption and dynamic separation tests, different oxygen-containing groups have different impacts on the nanopore diameter and small gas adsorption/ separation behavior. Structure (A), benefiting from its suitable nanoscale size, was verified to be effective in narrowing the size of nanopores to 1−2 nm and increasing the adsorption capacity of CO 2 , CH 4 , and CO, while Structure (B) seems to have a positive influence only on CH 4 . The uptake of CO 2 and the separation ratio of CO 2 /CO in HCP@COOH reach 32 cm 3 /g and 12.2, respectively, at 298 K and 1 bar. The IAST selectivity of CH 4 /CO in HCP@O-1 is up to 3.4, increasing from 1.9 for HCP-1. HCP@ COOH can separate syngas efficiently at ambient temperature and can be regenerated by simple vacuum operation. The interaction mechanism was also analyzed by experiments and electrostatic potential simulation.

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Melamine-functionalized aromatic carbonyl-based polymer with high surface area for efficient CO2 capture

Cited by 8 publications

References 60 publications

3D porous polymers for selective removal of CO2 and H2 storage: experimental and computational studies

3D porous polymers for selective removal of CO2 and H2 storage: experimental and computational studies

Hyper-Cross-Linked Resin Modified by a Micropore Polymer for Gas Adsorption and Separation

Effect of Different Oxygen-Containing Groups on the Nanopore Diameter of Hyper-Crosslinked Resins for Gas Adsorption/Separation

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