Moisture effect on the separation of CO2/CH4 mixtures with amine-functionalised porous silicas

Pacheco, Marlene; Bordonhos, Marta; Sardo, Mariana; Afonso, Rui; Gomes, J.R.; Mafra, Luís; Pinto, Moisés L.

doi:10.1016/j.cej.2022.136271

Cited by 11 publications

(8 citation statements)

References 31 publications

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“…Solid adsorbents such as amine-functionalized porous (Pacheco et al 2022) vapor (Mason et al 2015). Scholars have conducted a lot of research on this type of adsorbents, and found that in addition to using wet impregnation method to prepare them, they can also be prepared by chemically grafting amines onto the pore surface (Sayari, Belmabkhout and Da'na 2012).…”

Section: Chemically Graftingmentioning

confidence: 99%

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Yuan

Song

Yang

et al. 2023

Preprint

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The prevalence of indoor air pollution, primarily stemming from human activities, has led to increasing concerns regarding elevated CO2 concentrations in indoor environments. Prolonged exposure to such environments has been linked to reduced productivity, headaches, nausea, and more severe health risks, such as Sick Building Syndrome. Consequently, the development of efficient methods to reduce CO2 concentrations in indoor air is of utmost importance. This review offers a comprehensive analysis of cutting-edge indoor CO2 capture technologies, delving into the adsorption performance of solvents produced via various techniques. Our findings highlight the emergence of innovative materials that significantly enhance the indoor adsorption process; nevertheless, further investigation into reaction kinetics and stability remains imperative for continued progress. Among the methods assessed, Thermal Swing Adsorption and Wet Impregnation demonstrate superior suitability for indoor CO2 capture applications. Importantly, this review also emphasizes the potential of novel ventilation strategies, incorporating both internal ventilation and CO2 capture devices, to not only reduce indoor CO2 concentrations but also promote energy efficiency in buildings.

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Section: Chemically Graftingmentioning

confidence: 99%

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Yuan

Song

Yang

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…The absorption band at 880 cm –1 was ascribed to the stretching of Si–O–H. Also, additional vibrations in the region of 3500–3300 cm –1 due to the stretching of the N–H bond was found . The TEM image of the BP-10% APTES sample unveiled the layered structure of the BP nanosheets (Figure e).…”

mentioning

confidence: 99%

“…The process was illustrated in the lower panel of Figure . In this case, besides primary and secondary analogues, tertiary amines captured CO 2 in the aqueous phase through a different mechanism via bicarbonate formation . That was to say, the tertiary amine dissociated H 2 O to form a quaternary cationic species and −OH, followed by the reaction between −OH ion and CO 2 to form the bicarbonate anion, which was expressed in eqs –.…”

mentioning

confidence: 99%

“…Also, additional vibrations in the region of 3500−3300 cm −1 due to the stretching of the N−H bond was found. 18 The TEM image of the BP-10% APTES sample unveiled the layered structure of the BP nanosheets (Figure 1e). The further highresolution (HR) TEM image (Figure 1f) verified the existence of BP via the crystal plane (111) of orthorhombic BP (JCPDS#74-1878).…”

mentioning

confidence: 99%

“…In this case, besides primary and secondary analogues, tertiary amines captured CO 2 in the aqueous phase through a different mechanism via bicarbonate formation. 18 That was to say, the tertiary amine dissociated H 2 O to form a quaternary cationic species and −OH, followed by the reaction between −OH ion and CO 2 to form the bicarbonate anion, which was expressed in eqs 3−6. However, the more inert and bulkier tertiary amines than the primary or secondary ones scarcely exchanged the electrons with CO 2 molecules, thereby leading to an unidentifiable signal especially when exposed to ppm-level CO 2 gas.…”

mentioning

confidence: 99%

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Amine-Functionalized Black Phosphorus Nanosheets toward Ultrafast and Room-Temperature Trace Carbon Dioxide Sensing

Zhou

Qiu

Zhao

et al. 2022

J. Phys. Chem. Lett.

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Carbon dioxide (CO 2 ) poses a significant effect on global climate, indoor activity, and crop yield, thus necessitating real-time and high-performance detection. Traditional CO 2sensing materials always suffer from weak and sluggish reaction, elevated operation temperature, and poor detection limit. To surmount these obstacles, in this work a series of amine-rich polymer functionalized black phosphorus nanosheets (BP) were prepared for room-temperature CO 2 detection. Superior to TMMAP or 3-DEAPTES modified counterparts, the BP-10% APTES sensor delivered a response of 28.5% and ultrafast response/recovery time of 4.7 s/4.8 s toward 10 ppm of CO 2 under 36% RH at 22 °C, a lowest detection limit of 5 ppm, as well as excellent selectivity. Also, a nice repeatability and long-term operation stability were demonstrated. Thus, BP-APTES composites offer a promising strategy for high-performance CO 2 detection in terms of high sensitivity, low power-consumption, and convenient fabrication, and showcase brilliant prospects in portable optoelectronic detection systems and the Internet of Things.

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Indoor carbon dioxide capture technologies: a review

et al. 2023

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Moisture effect on the separation of CO2/CH4 mixtures with amine-functionalised porous silicas

Cited by 11 publications

References 31 publications

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Advanced Indoor CO2 Capture Technologies: A Comprehensive Review and Future Perspectives

Amine-Functionalized Black Phosphorus Nanosheets toward Ultrafast and Room-Temperature Trace Carbon Dioxide Sensing

Indoor carbon dioxide capture technologies: a review

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