Thermal Stability Enhanced Tetraethylenepentamine/Silica Adsorbents for High Performance CO<sub>2</sub> Capture

Park, Sunghyun; Choi, Keunsu; Yu, Hyun Jung; Won, Young June; Kim, Chaehoon; Choi, Minkee; Cho, So-Hye; Lee, Jung Hyun; Lee, Seung Yong; Lee, Jong Suk

doi:10.1021/acs.iecr.7b04912

Cited by 52 publications

(36 citation statements)

References 38 publications

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“…Different amine–epoxy crosslinking schemes were utilized to covalently stabilize the immobilized sorbent amines. These leach‐resistant catalysts can be used for CO 2 capture and for heterogeneous catalysis employed in carbon–carbon addition reactions . Both TMPED/SiO 2 and APTES/SiO 2 aminosilane‐based catalysts were observed to be more leach‐resistant/stable than their polyamine‐based counterparts because of a stable surface layer of covalently grafted aminosilane–silica species …”

Section: Resultsmentioning

confidence: 95%

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

et al. 2018

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Time‐consuming thermogravimetric analysis (TGA) decomposition study is a typical practice to assess the stability of fresh and water‐treated basic immobilized amine sorbents (BIAS)/catalysts. This work presents a faster and more precise spectroscopic UV/Vis/Cu2+ sorbent screening technique that quantifies aqueous amines washed from the BIAS by using UV‐active amine/Cu2+ complexes. Six BIAS‐based catalysts, containing different amine species and a crosslinker within silica, were treated with ultrapure water and then analyzed for their CO2 capture performance and amine leach resistance/stability by using TGA (catalysts, approximately 4 h) and UV/Vis/Cu2+ techniques (wash solution, few minutes). A comparative analysis revealed that directly quantifying washed amines with UV/Vis/Cu2+ is 9–127 times more precise than indirect testing of the sorbents by TGA. Similar trends in the H2O stability profiles of the catalysts [organic content retained values (OCR)] were reported by both analysis methods, allowing UV/Vis/Cu2+ to replace TGA for quantifying unstable leached amines. The UV/Vis/Cu2+ OCR results could be used to predict the CO2‐capture stability profile of the sorbents, confirming the reliability of this technique to rapidly screen catalyst stability and performance.

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Section: Resultsmentioning

confidence: 95%

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

et al. 2018

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“…Chemical structures of all compounds in TEPA and the corresponding liquid-phase 13 C NMR spectrum. Quantitative NMR analysis of amine state distribution was carried out using the equation of 1°:2°:3° = ( A a + A b + A c ):( A d + A e + A f + A g + A h )/2:( A i + A j + A k + A l )/3, where A i is the integrated peak area for i species (a); N 1s peak processing of XPS of PG–TEPA (b) and PG–TEPA–PO (c); amine state distributions of TEPA, PG–TEPA, and PG–TEPA–PO (d).…”

Section: Resultsmentioning

confidence: 99%

Epoxide-Functionalization of Grafted Tetraethylenepentamine on the Framework of an Acrylate Copolymer as a CO₂ Sorbent with Long Cycle Stability

Guo

Liang

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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Adsorptive capture of CO 2 using amine-based adsorbents is a promising strategy for reducing energy penalty, while the stability of solid amines remains the most critical challenge. In this work, we propose a novel methodology to significantly extend the stability of CO 2 adsorbents. By copolymerizing water-inoil emulsion containing multiple acrylates with rich epoxide groups, we synthesize porous beads with a hydrophobic and robust framework to ensure long-term thermal and hydrothermal stabilities. We then graft tetraethylenepentamine on the framework via ring-opening reaction between the epoxide and amine groups to resist amine leaching and oxidation. Finally, we convert most of the remaining primary amines and some secondary amines of the grafted tetraethylenepentamine to secondary and tertiary ones through epoxide-functionalization to prevent urea formation and sulfur poisoning. With a nitrogen content of 10.0 mmol•g −1 , the adsorbent achieves 2.03 mmol•g −1 CO 2 uptake at 60 °C and, which remains constant when exposed to air at 90 °C for 12 h. After 1000 adsorption/desorption cycles, its adsorption capacity drops by 9.8% in a simulated flue gas containing O 2 , SO 2 , and water steam, showing a long-term lifespan in a complex environment.

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“…The resulting material had O/N molar ratios of 0.42, 0.64, and 0.82, respectively, as shown in Figure 1. [84] with permission from the American Chemical Society.…”

Section: Effect Of the Concentrationmentioning

confidence: 99%

“…In order to investigate the effect of amine immobilization, contact angle measurements were employed to study wettability, surface energy, and diffusion resistance. Bouazizi [84] with permission from the American Chemical Society.…”

Section: Influence Of Amines On the Hydrophilic Charactersmentioning

confidence: 99%

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Advances in Amine-Surface Functionalization of Inorganic Adsorbents for Water Treatment and Antimicrobial Activities: A Review

2022

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In the last decade, adsorption has exhibited promising and effective outcomes as a treatment technique for wastewater contaminated with many types of pollutants such as heavy metals, dyes, pharmaceuticals, and bacteria. To achieve such effectiveness, a number of potential adsorbents have been synthesized and applied for water remediation and antimicrobial activities. Among these inorganic adsorbents (INAD), activated carbon, silica, metal oxide, metal nanoparticles, metal–organic fibers, and graphene oxide have been evaluated. In recent years, significant efforts have been made in the development of highly efficient adsorbent materials for gas and liquid phases. For gas capture and water decontamination, the most popular and known functionalization strategy is the chemical grafting of amine, due to its low cost, ecofriendliness, and effectiveness. In this context, various amines such as 3-aminopropyltriethoxysilane (APTES), diethanolamine (DEA), dendrimer-based polyamidoamine (PAMAM), branched polyethyleneimine (PEI), and others are employed for the surface modification of INADs to constitute a large panel of resource and low-cost materials usable as an alternative to conventional treatments aimed at removing organic and inorganic pollutants and pathogenic bacteria. Amine-grafted INAD has long been considered as a promising approach for the adsorption of both inorganic and organic pollutants. The goal of this review is to provide an overview of surface modifications through amine grafting and their adsorption behavior under diverse conditions. Amine grafting strategies are investigated in terms of the effects of the solvent, temperature, and the concentration precursor. The literature survey presented in this work provides evidence of the significant potential of amine-grafted INAD to remove not only various contaminants separately from polluted water, but also to remove pollutant mixtures and bacteria.

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Thermal Stability Enhanced Tetraethylenepentamine/Silica Adsorbents for High Performance CO₂ Capture

Cited by 52 publications

References 38 publications

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

Epoxide-Functionalization of Grafted Tetraethylenepentamine on the Framework of an Acrylate Copolymer as a CO₂ Sorbent with Long Cycle Stability

Advances in Amine-Surface Functionalization of Inorganic Adsorbents for Water Treatment and Antimicrobial Activities: A Review

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Thermal Stability Enhanced Tetraethylenepentamine/Silica Adsorbents for High Performance CO2 Capture

Cited by 52 publications

References 38 publications

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu2+ Technique

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu2+ Technique

Epoxide-Functionalization of Grafted Tetraethylenepentamine on the Framework of an Acrylate Copolymer as a CO2 Sorbent with Long Cycle Stability

Advances in Amine-Surface Functionalization of Inorganic Adsorbents for Water Treatment and Antimicrobial Activities: A Review

Contact Info

Product

Resources

About

Thermal Stability Enhanced Tetraethylenepentamine/Silica Adsorbents for High Performance CO₂ Capture

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

Novel Rapid Screening of Basic Immobilized Amine Sorbent/Catalyst Water Stability by a UV/Vis/Cu²⁺ Technique

Epoxide-Functionalization of Grafted Tetraethylenepentamine on the Framework of an Acrylate Copolymer as a CO₂ Sorbent with Long Cycle Stability