Preparation of renewable porous carbons for CO2 capture – A review

Shen, Yafei

doi:10.1016/j.fuproc.2022.107437

Cited by 59 publications

(31 citation statements)

References 259 publications

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“…Adsorption is one of the most common methods to capture CO 2 because of its high adsorption capacity, low cost, low energy requirements and ease of operation [ 14 ]. According to the literature report, the adsorbents can be divided into three types [ 15 ]: low-temperature (<200 degrees Celsius (°C)) adsorbents such as metal-organic frameworks [ 16 ] (MOFs), porous organic polymers [ 17 ], porous carbons [ 18 ], zeolites [ 19 ] and organic-inorganic hybrids [ 20 ]; intermediate (200–400 °C) absorbents such as metal oxides [ 21 ] and hydrotalcite [ 22 ], and high-temperature (>600 °C) adsorbents such as lithium zirconate [ 23 ]. Porous carbon-based materials have attracted much attention in CO 2 capture owing to wide availability, physiochemical stability and variable design to tune their porosity [ 24 , 25 , 26 , 27 , 28 ], such as those derived by natural resources including lignin [ 29 , 30 ], starch [ 31 ], cellulose [ 32 , 33 ], chitosan [ 34 , 35 ], cyclodextrin [ 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…It is suggested that the combination of narrow microporosity and S content plays a role in determining the CO 2 uptakes of these adsorbents. The maximum CO 2 uptake for this series of activated carbons is comparable to or exceeds some typical adsorbents such as porous carbons, porous polymers, porous aromatic frameworks, MOFs, and COFs . A comprehensive comparison of CO2 uptake between the carbons in this study and other adsorbents can be found in Table S2 of the Supporting Information.…”

Section: Resultsmentioning

confidence: 59%

“…Global climate change is known to be caused by anthropogenic CO 2 emissions, and it is of great interest to remove as much CO 2 as possible from the atmosphere . As the constant buildup of aggravated CO 2 concentration in the atmosphere results in the utmost unwelcome issue of the 21st century, carbon capture, sequestration, and storage technologies emerged as crucial in lowering emissions. , The status of carbon-capturing technologies on a global scale has been reviewed, and it reported that the United States, China, and Europe are notably ahead relative to the other countries in capturing CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Self-Activating Approach for Synthesis of 2,6-Naphthalene Disulfonate Acid Disodium Salt-Derived Porous Carbon and CO₂ Capture Performance

Bai

Huang

et al. 2023

Energy Fuels

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Porous carbon is considered an effective adsorbent for CO2 uptake thanks to its high textural feature, tunable surface decoration, and stable chemical/physical characteristics. Herein, a one-pot self-activating synthesis approach has been introduced to fabricate disodium 2,6-naphthalene disulfonate (NDS)-derived self-S-doped porous carbon. With this method, there is no external chemical activating agents for the activation process, and the self-activating process occurs by releasing CO, H2O, and CO2 gases during pyrolysis treatment. It was found that activating temperatures can carefully control the porous textural and elemental compositions of the as-prepared carbons. Upon the activating process, the optimal S-doped porous carbon was prepared at 700 °C, providing CO2 uptake capacities of 2.36 and 3.56 mmol/g at 25 and 0 °C and 1 bar, respectively. An in-depth investigation indicates that the joint effect of narrow microporosity and S content determines the CO2 uptake for this series of carbons. In addition, these NDS-derived self-S-doped porous carbons exhibit moderate CO2 heats of adsorption, fast adsorption kinetics, reasonable CO2/N2 selectivities, good dynamic CO2 capture capacities, and stable recyclabilities. The presented synthesis method is promising for fabricating facile carbon-based adsorbents from various organic precursors.

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“…Consequently, the development of materials and technologies for CO 2 capture and utilization is crucial for addressing the intractable global problem [ 1 ]. Numerous scientists and researchers have focused on the development of functional porous materials to capture and transform CO 2 under mild conditions [ 2 ], including zeolite [ 3 , 4 ], porous carbon [ 5 , 6 ], and metal-organic framework [ 7 , 8 , 9 ] among others. Porous organic polymers (POPs), as a class of emerging porous materials, are gradually attracting more research efforts due to their excellent physical and chemical stability, large surface area, good designability, and diverse structures, resulting in their wide applications in gas sorption [ 10 , 11 , 12 ], heterogeneous catalysis [ 13 , 14 , 15 ], sensor [ 16 , 17 , 18 ], and drug delivery [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Construction of an Azo-Functionalized POP for Reversibly Stimuli-Responsive CO2 Adsorption

2023

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A porous azo-functionalized organic polymer (JJU-2) was designed and prepared via oxidative coupling polymerization promoted by FeCl3. JJU-2 exhibited reversibly stimuli-responsive CO2 adsorption properties as a result of the trans/cis isomerization of the polymer’s azo-functionalized skeleton. Under UV irradiation and heat treatment, this porous material displayed various porous structures and CO2 adsorption properties. The initial Brunauer-Emmett-Teller (BET) surface area of JJU-1 is 888 m2 g−1. After UV irradiation, the BET surface area decreases to 864 m2 g−1, along with the decrease of micropores around 0.50 nm and 1.27 nm during the trans-to-cis isomerization process. In addition, CO2 sorption isotherms demonstrate an 8%t decrease, and the calculated Qst of CO2 has decreased from 29.0 kJ mol−1 to 26.5 kJ mol−1 due to the trans to cis conversion of the azobenzene side group. It is noteworthy that JJU-2′s CO2 uptakes are nearly constant over three cycles of alternating external stimuli. Therefore, this azo-functionalized porous material was a potential carbon capture material that was responsive to stimuli.

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Preparation of renewable porous carbons for CO2 capture – A review

Cited by 59 publications

References 259 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

Self-Activating Approach for Synthesis of 2,6-Naphthalene Disulfonate Acid Disodium Salt-Derived Porous Carbon and CO₂ Capture Performance

Design and Construction of an Azo-Functionalized POP for Reversibly Stimuli-Responsive CO2 Adsorption

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Preparation of renewable porous carbons for CO2 capture – A review

Cited by 59 publications

References 259 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

Self-Activating Approach for Synthesis of 2,6-Naphthalene Disulfonate Acid Disodium Salt-Derived Porous Carbon and CO2 Capture Performance

Design and Construction of an Azo-Functionalized POP for Reversibly Stimuli-Responsive CO2 Adsorption

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Resources

About

Self-Activating Approach for Synthesis of 2,6-Naphthalene Disulfonate Acid Disodium Salt-Derived Porous Carbon and CO₂ Capture Performance