Optimization of CO2 adsorption capacity and cyclical adsorption/desorption on tetraethylenepentamine-supported surface-modified hydrotalcite

Thouchprasitchai, Nutthavich; Pintuyothin, Nuthapol; Pongstabodee, Sangobtip

doi:10.1016/j.jes.2017.02.015

Cited by 26 publications

(14 citation statements)

References 60 publications

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“…Alkaloamines aqueous solutions is the most widely used technique for separating CO 2 from natural gas (Pino et al., 2016; Pongstabodee et al., 2016). However, it presents some drawbacks such as high cost for requiring large equipment and high energy to regenerate, chemical and oxidative degradation by the reaction with impurities, in addition to producing corrosive products (Huang et al., 2018; Kothandaraman et al., 2009; Thouchprasitchai et al., 2017; Ünveren et al., 2017). Ionic liquids (ILs) have aroused interest as substituents for conventional solvents, mainly due to the good selectivity towards CO 2 when compared with other gases.…”

Section: Introductionmentioning

confidence: 99%

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

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Physical immobilization of ionic liquids (ILs) in solid materials appears as an interesting strategy for the development of new sorbents for CO 2 separation from natural gas. In this work the effect of physical immobilization of two ionic liquids with different anions (bmim[Cl] and bmim[OAc]) on two mesoporous supports (commercial silica SBA-15 and silica extracted from rice husk) was evaluated for CO 2 separation from natural gas by experimental determination of CO 2 sorption, CO 2 /CH 4 selectivity and sorption kinetics. Results showed that the pure supports present the greatest CO 2 sorption capacity when compared to immobilized ILs. However, CO 2 removal efficiency improves considerably in the CO 2 /CH 4 mixture when ILs are immobilized in these supports. The best selectivity results were obtained for supports immobilized with the IL bmim[Cl] and values increased for SIL-Cl by 37% and SBA-Cl 51% when compared with their respective supports. The contribution of SIL-Cl (3.03 ± 0.12) to separation performance (CO 2 /CH 4 ) is similar to SBA-Cl (3.29 ± 0.39). ILs supported also presented fast sorption kinetics when compared to pure ILs thus being an interesting alternative in the search for highly efficient and low-cost separation processes.

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Section: Introductionmentioning

confidence: 99%

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

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“…The most well-known process involves aqueous amine solutions 6,7 . Despite being widespread this process presents operational drawbacks (high energy for regeneration stage, degradation byproducts, equipment corrosion) that discourage its use 5,[8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

et al. 2019

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Ionic liquids (ILs) physical immobilization in solid materials is a key strategy for developing efficient and low cost CO 2 capture processes. In this work, two porous commercial substrates with different characteristics (silica and alumina) were impregnated with ILs by physical wet method. Imidazolium based IL combined with [Br]and [Tf 2 N]anions were used in impregnation process. CO 2 sorption capacity and selectivity (CO 2 /N 2) of these materials were investigated. The best results regarding CO 2 /N 2 selectivity and CO 2 sorption were obtained with [Tf 2 N]anion. In relation to solid support, commercial alumina exhibited enhanced CO 2 uptake and higher selective capacity (CO 2 /N 2) (6.1 (± 0.1)). Combination of commercial alumina as support and 20 wt% of mbmim [Tf 2 N] resulted in higher CO 2 /N 2 selectivity of 9.5 ± 1.0. In addition, this material also showed fast sorption kinetics when compared to pure IL besides reuse capacity.

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“…One of the most important parameter to take into account in this application is the specific surface area that is strongly related to the CO 2 adsorption capacity. Moreover, Table 2 evidences slightly higher adsorption capacities for the materials synthesized by coprecipitation at high supersaturation conditions than for those prepared at low supersaturation conditions, except in the samples modified with TEPA (up to 6 mmol.g -1 ), as shown by Thouchprasitchaia et al (2018). However, the commercial hydrotalcite tested by Wu et al…”

Section: Co 2 Adsorption -Capture and Storagementioning

confidence: 90%

“…Thouchprasitchaia et al (2018) obtained a series of calcined teraethylenepentamine (TEPA)supported hydrotalcites. At first, increasing the TEPA loading led to higher adsorption capacities, explained by the availability of more basic sites with a higher affinity for CO 2 .…”

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confidence: 99%

Layered double hydroxides and LDH-derived materials in chosen environmental applications: a review

Chaillot

Bennici

Brendlé

2020

Environ Sci Pollut Res

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With increasing global warming awareness, layered double hydroxides (LDHs), hydrotalcites and their related materials are key components to reduce the environmental impact of human activities. Such materials can be synthesized quickly with high efficiency by using different synthesis processes. Moreover, their properties tunability is appreciated in various industrial processes. Regarding their physical and structural properties, such materials can be applied in environmental applications such as the adsorption of atmospheric and aqueous pollutants, the hydrogen production, or the formation of 5-Hydroxymethylfurfural (5-HMF). After a first part dedicated to the synthesis processes of hydrotalcites, the present review reports on specific environmental applications chosen as example in various fields (green chemistry and depollution) that have gained increasing interest in the last decades, enlightening the links between structural properties, synthesis route and application using the lamellar materials.

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Optimization of CO2 adsorption capacity and cyclical adsorption/desorption on tetraethylenepentamine-supported surface-modified hydrotalcite

Cited by 26 publications

References 60 publications

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

Layered double hydroxides and LDH-derived materials in chosen environmental applications: a review

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