Low-cost DETA impregnation of acid-activated sepiolite for CO2 capture

Liu, Libin; Chen, Hongbo; Shiko, Elenica; Fan, Xianfeng; Zhou, Yefeng; Zhang, Gang; Luo, Xiao; Hu, Xin‐Sheng

doi:10.1016/j.cej.2018.07.086

Cited by 137 publications

(42 citation statements)

References 54 publications

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“…These authors did not observe an improvement of the CO 2 adsorption with the temperature as a consequence of the amine lost from the composite during the vacuum degassing step [85]. Diethylenetriamine (DETA) has been another "basket molecule" incorporated to a sepiolite modified by acid treatment [86]. In all cases, the CO 2 adsorption was higher than that obtained for the raw sepiolite, attaining a maximum adsorption value of 73 mg CO 2 /g.…”

Section: Si-ohmentioning

confidence: 95%

“…As takes place in other clay minerals impregnated with amine-rich polymers, this adsorbent can be easily regenerated and reused for several runs. An increase of the adsorption temperature improves its CO 2 adsorption capacity; however, a further increase in the temperature up to 80 • C causes a decrease of the CO 2 capture, suggesting that the diffusion has less influence than the thermodynamic effects at higher adsorption temperatures, being the CO 2 adsorption unfavorable under more severe adsorption conditions [86]. [77] reported a higher CO 2 adsorption when TEPA was used (160 mg CO 2 /g after 120 min at 70 • C and under atmospheric pressure) instead of PEI.…”

Section: Si-ohmentioning

confidence: 99%

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CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

et al. 2019

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The aim of this work is to make a brief review of the adsorption of CO2 on modified clay minerals. Previous researchers have used different clay modifications, either by making changes in the structure by a reaction with another product or by the addition of a catalyst to improve their CO2 adsorption capacity. In order to obtain high values of CO2 uptake, some researchers have been incorporated amines-speices such as (3-aminopropyl)triethoxysilane (APTES), tetraethylenepentamine (TEPA) and a branched polyethylenimine (PEI) by grafting or impregnation. The synthesis of an adsorbent from mineral clays can generate an increase in its porosity and in its textural properties. These investigations differ in a number of factors such as the kind of clay, the operating conditions, y and the nature of the impregnated compound. The role of these factors in the CO2 adsorption capacity will be considered in detail in this review.

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Section: Si-ohmentioning

confidence: 95%

Section: Si-ohmentioning

confidence: 99%

CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

et al. 2019

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“…the Langmuir model best describes the adsorption process of the RB21 dye on MMCC, suggesting a monolayer adsorption process with no interaction between the adsorbed dye molecules, the maximum dye adsorption capacity of the Langmuir isothermal model at 40ºC was 408.90 mg.g -1 [12]. [64,65]. Its structure is a needle-shaped crystalline structure that grows in the direction of the fiber, composed of two tetrahedral silica sheets and a central octahedral magnesium sheet [66].…”

Section: The Modified Microcrystalline Cellulosementioning

confidence: 99%

“…Its structure is a needle-shaped crystalline structure that grows in the direction of the fiber, composed of two tetrahedral silica sheets and a central octahedral magnesium sheet [66]. Because of the discontinuous octahedral sheets, several porous channels develop in the sepiolite structure, allowing access to contaminants in the structure [67]; it has been successfully used for the adsorption of various contaminants such as heavy metals, dyes, oils, carbon dioxide, hydrogen and phosphorus [64,[67][68][69][70][71]. Sepiolite is a great adsorbent for organic species because it has a variety of attractive properties such as high specific surface area, high porosity, and high chemical and mechanical stability [72].…”

Section: The Modified Microcrystalline Cellulosementioning

confidence: 99%

Removal of Reactive Blue 21 (RB21) Phthalocyanine Dye from Aqueous Solution by Adsorption Process: a Review

Aggadi¹,

Hourch²

2021

Pol. J. Environ. Stud.

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Phthalocyanine dyes are one of the major categories of reactive dyes. They are water-soluble metal complexes, mainly containing copper, that are resistant to bacterial degradation under aеrobic and anaerobic conditions. In this review article, the authors present the removal of RB21 phthalocyanine dye in aqueous solution by adsorption based on the literature. Therefore, an exhaustive list of various adsorbents has been compiled here. Additionally, the performance of several adsorbents under different physico-chemical process parameters and their comparative adsorption capacity towards the adsorption of RB21 dye was also presented. Affective adsorption factors for the dye such as solution pH, initial dye concentration, adsorbent dosage and temperature are also included.

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“…29 For DETA-HSNs, two new peaks at 1570 cm À1 and 1481 cm À1 are the characteristics of the asymmetric and symmetric vibrations of N-H from the primary amine (NH 2 ) in diethylenetriamine. 30 The peak at approximately 1318 cm À1 is assigned to C-N bending mode. 31 Similar phenomena appear in the FTIR spectrum of DETA-PSNs (shown in Fig.…”

Section: Characterization Of the Silica Nanospheres Modified With Diethylenetriaminementioning

confidence: 99%

CO₂ absorption of anhydrous colloidal suspension based silica nanospheres with different microstructures

Ding

Guo

et al. 2020

Energy & Environment

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Liquid absorption and solid adsorption technologies have been researched and reported widely for CO2 capture. Combining the advantages of these two capture materials, a novel anhydrous colloidal suspension was synthesized by dispersing amine-modified microporous silica nanospheres in 2-[2-(dimethylamino) ethoxy] ethanol. In this study, solid, hollow, and porous silica nanospheres with different internal pore structures were synthesized and characterized. The effects of the silica nanosphere microstructures on diethylenetriamine loading and CO2 absorption in anhydrous colloidal suspensions were studied. Due to a more developed pore structure, the hollow and porous silica-based absorbents possessed stronger amine loading capacities compared to solid silicon-based absorbent, and the best absorption performance was an absorption capacity of 1.2543 mmol/g at a pressure of 150 kPa and a temperature of 300 K. The results indicated that pore structure had a significant influence on the absorption property, and the porous silica-based absorbent was more favorable for CO2 absorption than solid and hollow silica-based absorbents. Moreover, the pseudo-second-order model was successful in predicting the CO2 absorption process in colloidal suspensions.

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Low-cost DETA impregnation of acid-activated sepiolite for CO2 capture

Cited by 137 publications

References 54 publications

CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

Removal of Reactive Blue 21 (RB21) Phthalocyanine Dye from Aqueous Solution by Adsorption Process: a Review

CO₂ absorption of anhydrous colloidal suspension based silica nanospheres with different microstructures

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Low-cost DETA impregnation of acid-activated sepiolite for CO2 capture

Cited by 137 publications

References 54 publications

CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

CO2 Adsorption of Materials Synthesized from Clay Minerals: A Review

Removal of Reactive Blue 21 (RB21) Phthalocyanine Dye from Aqueous Solution by Adsorption Process: a Review

CO2 absorption of anhydrous colloidal suspension based silica nanospheres with different microstructures

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CO₂ absorption of anhydrous colloidal suspension based silica nanospheres with different microstructures