Thermodynamic characteristics of CO2 adsorption on β-cyclodextrin based porous materials: Equilibrium capacity function with four variables

Du, Yarong; Geng, Yuhan; Guo, Tianxiang; Zhang, Runan; Zhang, Yonghe; Wang, Xilai; Han, Zhonghe

doi:10.1016/j.csite.2022.102426

Cited by 4 publications

(4 citation statements)

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“…These results indicate that decreasing the heating rate is advantageous for promoting the adsorption performance at a given final activation temperature (which allows for more heat supply for the β-CD sample), and so is increasing the final activation temperature at a given activation time. Therefore, it is concluded that increasing the heating capacity will improve the adsorption performance of CO 2 on the β-CD sample, and the details have been discussed in our previous paper [ 61 ].…”

Section: Resultsmentioning

confidence: 99%

“…Regarding the pyrolysis stages [ 50 ], apparent activation energy and pyrolysis kinetics of the cyclodextrins [ 60 ] have been preliminarily investigated in some literature. Then, the adsorption thermodynamics of CO 2 on β-CD-derived adsorbent by thermal activation have been reported in our recent paper [ 61 ]. However, the pore formation mechanism during the thermal activation of β-CD for CO 2 uptake has been not systematically investigated so that it is not clear how to further promote the performance of CO 2 adsorption through improving the preparation method of the adsorbent derived from β-CD.…”

Section: Introductionmentioning

confidence: 99%

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Porous Structure of β-Cyclodextrin for CO2 Capture: Structural Remodeling by Thermal Activation

et al. 2022

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With a purpose of extending the application of β-cyclodextrin (β-CD) for gas adsorption, this paper aims to reveal the pore formation mechanism of a promising adsorbent for CO2 capture which was derived from the structural remodeling of β-CD by thermal activation. The pore structure and performance of the adsorbent were characterized by means of SEM, BET and CO2 adsorption. Then, the thermochemical characteristics during pore formation were systematically investigated by means of TG-DSC, in situ TG-FTIR/FTIR, in situ TG-MS/MS, EDS, XPS and DFT. The results show that the derived adsorbent exhibits an excellent porous structure for CO2 capture accompanied by an adsorption capacity of 4.2 mmol/g at 0 °C and 100 kPa. The porous structure is obtained by the structural remodeling such as dehydration polymerization with the prior locations such as hydroxyl bonded to C6 and ring-opening polymerization with the main locations (C4, C1, C5), accompanied by the release of those small molecules such as H2O, CO2 and C3H4. A large amount of new fine pores is formed at the third and fourth stage of the four-stage activation process. Particularly, more micropores are created at the fourth stage. This revealed that pore formation mechanism is beneficial to structural design of further thermal-treated graft/functionalization polymer derived from β-CD, potentially applicable for gas adsorption such as CO2 capture.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Porous Structure of β-Cyclodextrin for CO2 Capture: Structural Remodeling by Thermal Activation

et al. 2022

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“…For thermal activation, a rapid temperature-assisted synthesis has been reported to improve the porous structure of the cyclodextrins for CO 2 adsorption [54]. A third category of cyclodextrin-based materials involves CO 2 adsorption by thermal activation under N 2 atmosphere [55,56]. The adsorption thermodynamics of CO 2 on β-CD-derived adsorbent by thermal activation have been reported recently [55].…”

Section: Cyclodextrinsmentioning

confidence: 99%

“…A third category of cyclodextrin-based materials involves CO 2 adsorption by thermal activation under N 2 atmosphere [55,56]. The adsorption thermodynamics of CO 2 on β-CD-derived adsorbent by thermal activation have been reported recently [55]. However, the pore formation mechanism during the thermal activation of β-CD for CO 2 uptake was systematically investigated by the same group in another study [56].…”

Section: Cyclodextrinsmentioning

confidence: 99%

Post-Combustion Capture of Carbon Dioxide by Natural and Synthetic Organic Polymers

Ghosh

2023

Polysaccharides

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The elevation of carbon dioxide (CO2) levels in the atmosphere is responsible for global warming which in turn causes abrupt climate change and consequently poses a threat to living organisms in the coming years. To reduce CO2 content in the atmosphere CO2 capture and separation is highly necessary. Among various methods of CO2 capture post-combustion capture is very much useful because of its operational simplicity and applicability in many industries and power sectors, such as coal-fired power plants. Polymers with high surface area, high volume and narrow pores are ideal solid sorbents for adsorption-driven post-combustion CO2 capture. Natural polymers, such as polysaccharides are cheap, abundant, and can be modified by various methods to produce porous materials and thus can be effectively utilized for CO2 capture while the surface area and the pore size of synthetic porous organic polymers can be tuned precisely for high CO2 capturing capacity. A significant amount of research activities has already been established in this field, especially in the last ten years and are still in progress. In this review, we have introduced the latest developments to the readers about synthetic techniques, post-synthetic modifications and CO2 capture capacities of various biopolymer-based materials and synthetic porous organic polymers (POPs) published in the last five years (2018–2022). This review will be beneficial to the researchers to design smart polymer-based materials to overcome the existing challenges in carbon capture and storage/sequestration.

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Isothermal and isovolumetric process of CO2 adsorption on nitrogen-doped biochar: Equilibrium and non-equilibrium states

Geng

Guo

et al. 2023

Case Studies in Thermal Engineering

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Thermodynamic characteristics of CO2 adsorption on β-cyclodextrin based porous materials: Equilibrium capacity function with four variables

Cited by 4 publications

References 29 publications

Porous Structure of β-Cyclodextrin for CO2 Capture: Structural Remodeling by Thermal Activation

Porous Structure of β-Cyclodextrin for CO2 Capture: Structural Remodeling by Thermal Activation

Post-Combustion Capture of Carbon Dioxide by Natural and Synthetic Organic Polymers

Isothermal and isovolumetric process of CO2 adsorption on nitrogen-doped biochar: Equilibrium and non-equilibrium states

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