2021
DOI: 10.1016/j.jece.2021.106709
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Role of brush-like additives in CO2 adsorbents for the enhancement of amine efficiency

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Cited by 17 publications
(11 citation statements)
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“…Qi et al. reported that the adsorbent (MMSN‐30/TEPA‐50) with the appropriate amount of brush‐like cetyltrimethylammonium chloride (CTAC) exhibited higher CO 2 adsorption capacities (3.68 mmol g −1 under simulated dry air conditions) than that of the adsorbents with none or fewer additives, 45 which is the most significant enhancement in low CO 2 concentration range. Further, the researchers added bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide to the CTAC‐modified adsorbents, which led to an even greater increase in adsorption values under flue gas conditions (75°C, 15 vol.%) 46 .…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Qi et al. reported that the adsorbent (MMSN‐30/TEPA‐50) with the appropriate amount of brush‐like cetyltrimethylammonium chloride (CTAC) exhibited higher CO 2 adsorption capacities (3.68 mmol g −1 under simulated dry air conditions) than that of the adsorbents with none or fewer additives, 45 which is the most significant enhancement in low CO 2 concentration range. Further, the researchers added bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide to the CTAC‐modified adsorbents, which led to an even greater increase in adsorption values under flue gas conditions (75°C, 15 vol.%) 46 .…”
Section: Resultsmentioning
confidence: 99%
“…Pre‐synthesis by retaining the templating agent is another feasible way to incorporate additives, which is usually achieved by avoiding calcination at the end of substrate production 45–48 . Han et al.…”
Section: Introductionmentioning
confidence: 99%
“…Several studies have suggested that TEPA-impregnated sorbents show a high capacity for DAC, although they suffer from obvious cycling stability problems. 131,258,259 Pentaethylenehexamine (PEHA) contains one more amine group than TEPA, and has been verified to exhibit promising capacities and stabilities for DAC. 131 Tris(2-aminoethyl)amine (TREN) is a small amine with a high density of primary amines; thus, it has great potential for excellent uptake.…”
Section: Effect Of Aminesmentioning
confidence: 99%
“…Three additives (CTAB, PEG200, PEG1000) were compared and PEG was observed to perform best by increasing the amine efficiency to 0.16 from 0.10. Qi et al 259 investigated the role of the brush-like additive, CTAC, in enhancing amine efficiency. CTAC was used as a template to synthesize micro-mesoporous silica nanoparticles (MMSNs) that were later impregnated with TEPA.…”
Section: Effect Of Additivesmentioning
confidence: 99%
“…For example, the amine-functionalized SBA-15 with P123 as a template or MCM-41 with CTAB as such had shown excellent CO 2 capture performance. , In our previously reported works, KIT-1 and MCM-48 with long alkyl chain templates reserved were proven to be highly efficient in CO 2 capture owing to well-dispersed amines. Besides, we have also explored the role of brush-like additives in amine-functionalized silica supports to promote amine efficiency. To date, however, there have been no investigations of the direct incorporation of multiple additives as templates toward silica support to synergistically improve the CO 2 capture capability. Therefore, to a certain extent, the study regarding the support with multiple additives modified for CO 2 adsorption with high efficiency is of great significance.…”
Section: Introductionmentioning
confidence: 99%