Solvent-free molten co-assembly of ordered mesoporous carbon for efficiently supported adsorption and separation of SO<sub>2</sub>

Kan, Xun; Song, Feiyu; Li, Fangyao; Xiao, Shuying; Liu, Fujian; Jiang, Lilong

doi:10.1039/d2ta00408a

Cited by 25 publications

(6 citation statements)

References 44 publications

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“…In recent years, porous organic polymers (POPs) have aroused colossal interest in the scientific fraternity of adsorption and separation because of the polymers’ special physicochemical properties and advanced performance. − To date, a large number of POPs with diverse structures and properties have been developed, such as porous aromatic frameworks (PAFs), , porous polymer networks (PPNs), polymers of intrinsic microporosity (PIMs), conjugated microporous polymers (CMPs), hyper cross-linked polymers (HCPs), microporous polymer networks (MPNs), covalent organic frameworks (COFs), , and so on. Compared with conventional porous materials, such as zeolite, activated carbon, silicon carbide, alumina, etc., − emerging POPs exhibit significant advantages, such as large surface area and high porosity, tunable pores, low density, abundant pore properties and permanent porosity . Moreover, unlike MOFs, POPs are constructed from irreversible strong bonds (i.e., intrinsic chemical stability), which endows them with stronger resistance to harsh environments than that of MOFs based on not-so-strong coordinative bonds. − Therefore, POPs are excellent candidates for high-performance adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Zhang

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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The development of robust and efficient porous adsorbents is essential for capturing xenon (Xe) and perfluorinated electron specialty gases (F-gases) in semiconductor exhaust gases, as toxic and corrosive gases coexist in high-temperature plasma degradation off-gases. Herein, two three-dimensional (3D) fluorinated porous aromatic frameworks (PAFs) with abundant fluorine (labeled PAF-4F and PAF-8F) were synthesized. The two PAFs exhibit high IAST selectivity in capturing Xe and F-gases from semiconductor off-gases, as well as excellent physicochemical stability and reusability, which have been collaboratively verified by single-component gas adsorption and regeneration tests, etc. Density functional theory (DFT) simulation revealed that the entry of strongly electronegative fluorine atoms into PAFs causes localized charge separation on the polymer pore surface, resulting in the preferential adsorption of high-polarizability Xe and F-gases via induced electric field gradients. Systematic studies have sufficiently manifested the great potential of fluorine-functionalized porous materials to effectively capture Xe and F-gases, which provides practical insights into the fabrication of highly stable porous adsorbents for harsh operating conditions.

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Section: Introductionmentioning

confidence: 99%

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Zhang

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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“…These fundamental limitations in MC production have led to multiple works in solvent-free syntheses to provide a new "green" perspective, especially regarding the reduction of energy consumption and carbon footprint. [259][260][261] Additionally, several works explored the concept of using microwave synthesizer to prepare mesoporous carbons, which both crosslinking reaction and carbonization process can be significantly accelerated, reducing the reaction time from at least several hours to minutes. 233,262 However, microwave heating in most cases is driven by the high microwave cross-section of the substrate (instead of materials themselves), and therefore extending this approach to bulk MC manufacturing may be difficult.…”

Section: Discussionmentioning

confidence: 99%

Mesoporous carbons from self‐assembled polymers

Robertson

Zagho

Nazarenko

et al. 2022

Journal of Polymer Science

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Polymer self-assembly provides a robust and cost-efficient nanomanufacturing platform for enabling a broad range of applications, such as microelectronics, drug delivery, and separation membranes. This review focuses on discussing the progress and opportunities of self-assembled polymer in the synthesis of mesoporous carbons (MCs), which have aroused significant research interests over the past decades. Specifically, we will discuss the two most established approaches for converting nanostructured polymers to MCs, including templating-based and direct pyrolysis-based methods. We will also review the fundamental ordering mechanisms and kinetics of these polymeric systems and discuss the recent development of engineering methods for providing ondemand control over the pore size and morphology of MCs. Additionally, this review article also includes a section focusing on the strategies to further functionalize these materials from self-assembled polymers to enhance their performance, such as chemical activation, heteroatom doping, introduction of nanoparticles into the carbon matrix, and enhancing graphitization degree of carbon walls. Finally, a brief perspective is provided about the emerging research opportunity in this exciting field.

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“…Activated carbon (AC) has been widely studied for desulfurization because of its high microporosity. ,,− AC is commonly prepared by the pyrolysis of carbon sources including rice straw, switchgrass, coal, and wood, etc. The high surface area of AC materials favors H 2 S adsorption capacity by providing sufficient adsorption sites. ,− Wang et al examined the H 2 S adsorption performance of AC obtained from peanut shells with KOH activation (Figure a) .…”

Section: Selective Oxidation Of H2smentioning

confidence: 99%

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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Hydrogen sulfide (H 2 S) is a notorious and lethal gas widely generated in human economic activities and natural occurrences. The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H 2 S into high-valued products. As such, diversified technologies have been extensively explored, including H 2 S splitting, selective oxidation of H 2 S, and simultaneous conversion of H 2 S and CO 2 . In this review, the state-of-the-art processes for H 2 S conversion and utilization are reviewed. The potentials of various value-added products from H 2 S utilization, such as H 2 , syngas, COS, CH 3 SH, and other sulfur-containing fine chemicals are elucidated in detail. Notably, the traditional and emerging materials for H 2 S removal, mainly including metal oxide catalysts and carbon-based materials are also overviewed in this review. In addition, the catalytic mechanisms for these desulfurization reactions are also briefly discussed. Lastly, perspectives are given on the viability and technological gaps for each technology and corresponding catalysts.

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Solvent-free molten co-assembly of ordered mesoporous carbon for efficiently supported adsorption and separation of SO₂

Abstract: Developing supported polytertiary amine solid adsorbents shows a great significant meaning for highly reversible capture of SO2 from industrial tail gas. We report here a novel solvent-free molten co-assembly of...

Cited by 25 publications

References 44 publications

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Mesoporous carbons from self‐assembled polymers

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

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Solvent-free molten co-assembly of ordered mesoporous carbon for efficiently supported adsorption and separation of SO2

Abstract: Developing supported polytertiary amine solid adsorbents shows a great significant meaning for highly reversible capture of SO2 from industrial tail gas. We report here a novel solvent-free molten co-assembly of...

Cited by 25 publications

References 44 publications

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Fluorine-Induced Electric Field Gradient in 3D Porous Aromatic Frameworks for Highly Efficient Capture of Xe and F-Gases

Mesoporous carbons from self‐assembled polymers

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

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Solvent-free molten co-assembly of ordered mesoporous carbon for efficiently supported adsorption and separation of SO₂

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts