Recent Progress in the Development of Hyper-Cross-Linked Polymers for Adsorption of Gaseous Volatile Organic Compounds

Ahmadi, Younes; Kim, Ki‐Hyun

doi:10.1080/15583724.2022.2082470

Cited by 19 publications

(17 citation statements)

References 155 publications

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“…), mineral oils, and mixed solvents. 253 However, these solvents have problems such as environmental pollution, poor safety, and limited gas absorption capacity, which greatly restrict the industrial application of absorption technology in the field of benzenebased VOCs treatment. 254 Thus, finding an absorbent with high absorption efficiency, environmental friendliness, and stable performance for VOCs absorption and treatment technology is an urgent problem.…”

Section: Challengesmentioning

confidence: 99%

Condensable Gases Capture with Ionic Liquids

Chen

Lei

et al. 2023

Chem. Rev.

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Condensable gases are the sum of condensable and volatile steam or organic compounds, including water vapor, which are discharged into the atmosphere in gaseous form at atmospheric pressure and room temperature. Condensable toxic and harmful gases emitted from petrochemical, chemical, packaging and printing, industrial coatings, and mineral mining activities seriously pollute the atmospheric environment and endanger human health. Meanwhile, these gases are necessary chemical raw materials; therefore, developing green and efficient capture technology is significant for efficiently utilizing condensed gas resources. To overcome the problems of pollution and corrosion existing in traditional organic solvent and alkali absorption methods, ionic liquids (ILs), known as “liquid molecular sieves”, have received unprecedented attention thanks to their excellent separation and regeneration performance and have gradually become green solvents used by scholars to replace traditional absorbents. This work reviews the research progress of ILs in separating condensate gas. As the basis of chemical engineering, this review first provides a detailed discussion of the origin of predictive molecular thermodynamics and its broad application in theory and industry. Afterward, this review focuses on the latest research results of ILs in the capture of several important typical condensable gases, including water vapor, aromatic VOCs (i.e., BTEX), chlorinated VOC, fluorinated refrigerant gas, low-carbon alcohols, ketones, ethers, ester vapors, etc. Using pure IL, mixed ILs, and IL + organic solvent mixtures as absorbents also briefly expanded the related reports of porous materials loaded with an IL as adsorbents. Finally, future development and research directions in this exciting field are remarked.

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Section: Challengesmentioning

confidence: 99%

Condensable Gases Capture with Ionic Liquids

Chen

Lei

et al. 2023

Chem. Rev.

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“…Adsorption separation technology based on porous materials is considered to be one of the promising ways to treat industrial off-gases due to its energy-saving, high-efficiency, and easy-to-operate characteristics. − Many functional porous materials with task-specific and outstanding physicochemical stability have been developed such as metal organic frameworks and porous organic frameworks (POFs). − POFs constructed by organic building units via robust covalent bonds are becoming increasingly significant in porous adsorbents because of their diverse structural types, high stability, non-metallic porous networks. − Plenty of POFs with various geometries and topologies have been developed and studied in detail, including covalent organic frameworks, − porous aromatic frameworks, − porous polymer networks, , polymers of intrinsic microporosity, conjugated microporous polymers, , hyper cross-linked polymers, , etc.…”

Section: Introductionmentioning

confidence: 99%

“…18−24 POFs constructed by organic building units via robust covalent bonds are becoming increasingly significant in porous adsorbents because of their diverse structural types, high stability, non-metallic porous networks. 25−27 Plenty of POFs with various geometries and topologies have been developed and studied in detail, including covalent organic frameworks, 28−32 porous aromatic frameworks, 33−35 porous polymer networks, 36,37 polymers of intrinsic microporosity, 38 conjugated microporous polymers, 39,40 hyper cross-linked polymers, 41,42 etc.…”

Section: Introductionmentioning

confidence: 99%

Polypyrene Porous Organic Framework for Efficiently Capturing Electron Specialty Gases

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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The polypyrene polymer with an extended π-conjugated skeleton is attractive for perfluorinated electron specialty gas (F-gas) capture as the high electronegativity of fluorine atoms makes F-gases strongly electronegative gases. Herein, a polypyrene porous organic framework (termed as Ppy-POF) with an extended π-conjugated structure and excellent acid resistance was constructed. Systematic studies have shown that the abundant π-conjugated structures and gradient electric field distribution in Ppy-POF can endow it exceptional adsorption selectivity for high polarizable F-gases and xenon (Xe), which has been collaboratively confirmed by single-component gas adsorption experiments, time-dependent adsorption rate tests, dynamic breakthrough experiments, etc. Electrostatic potential distribution and charge density difference based on Grand Canonical Monte Carlo simulations and density functional theory calculations demonstrate that the selective adsorption of F-gases and Xe in Ppy-POF is attributed to the strong charge-transfer effect and polarization effect between Ppy-POF and gases. These results manifest that the POF with an extended π-conjugated structure and gradient electric field distribution has great potential in efficiently capturing electron specialty gases.

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“…The incorporation of B–N covalent bonds in polymers can generate interesting materials that combine the unique characteristics of BN-PAHs with the known properties of polymers, such as thermal and mechanical stability and especially processability. In this sense, only three types of polymers containing B–N covalent bonds have been reported (Figure a), but none of them is to be used as catalysts: BN-based polystyrene prepared from vinyl monomers containing BN units; − BN-based conjugated polythiophenes with an application as organic field-effect transistors or in organic solar cells and BN-based polyphenylene-type polymers …”

mentioning

confidence: 99%

“…In this sense, only three types of polymers containing B−N covalent bonds have been reported (Figure 1a), but none of them is to be used as catalysts: BNbased polystyrene prepared from vinyl monomers containing BN units; 6 application as organic field-effect transistors 10 or in organic solar cells 11 and BN-based polyphenylene-type polymers. 12 To the best of our knowledge, no BN-PAH-based porous polymers have yet been reported. The development of porosity in polymers is a very interesting property because, in addition to providing mechanical and thermal stability to the structure, it can allow the lodging of molecules inside the pores, yielding interesting heterogeneous catalysts.…”

mentioning

confidence: 99%

Hyper-Cross-Linked Porous Polymer Featuring B–N Covalent Bonds (HCP-BNs): A Stable and Efficient Metal-Free Heterogeneous Photocatalyst

Señorans,

Valencia,

Merino

et al. 2023

ACS Macro Lett.

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The first example of a porous polymer containing B−N covalent bonds, prepared from a tetraphene B−N monomer and biphenyl as a comonomer, is reported. It was prepared using the solvent knitting strategy, which allows the connection between the aromatic rings of the two monomers through methylene groups provided by an external cross-linking agent. The new polymer exhibited micromeso porosity with an S BET of 612 m 2 /g, high thermal stability, and potential properties as a heterogeneous photocatalyst, since it is very active in the aza-Henry coupling reaction (>98% of conversion and selectivity). After the first run, the catalyst improves its photocatalytic activity, shortening the reaction time to only 2 h and maintaining this activity in successive runs. The presence of a radical in this structure that remains stable with successive runs makes it a new type of material with potential applications as a highly stable and efficient photocatalyst.

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Recent Progress in the Development of Hyper-Cross-Linked Polymers for Adsorption of Gaseous Volatile Organic Compounds

Cited by 19 publications

References 155 publications

Condensable Gases Capture with Ionic Liquids

Condensable Gases Capture with Ionic Liquids

Polypyrene Porous Organic Framework for Efficiently Capturing Electron Specialty Gases

Hyper-Cross-Linked Porous Polymer Featuring B–N Covalent Bonds (HCP-BNs): A Stable and Efficient Metal-Free Heterogeneous Photocatalyst

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