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Mohamed Hatta NS, Hussin F, Gew LT, Aroua MK. Enhancing surface functionalization of activated carbon using amino acids from natural source for CO2 capture. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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Huhe FNU, King J, Chuang SSC. Amine-based sorbents for CO2 capture from air and flue gas—a short review and perspective. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-022-04902-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Ji H, Yan G, Zou P, Wang H, Li M, Feng Y, Qu X, Geng D, Shi J, Zhang X. Synthesis of Vinylene-Linked Thiopyrylium-, Pyrylium-, and Pyridinium-Based Covalent Organic Frameworks by Acid-Catalyzed Aldol Condensation. Chemistry 2023; 29:e202202787. [PMID: 36196504 DOI: 10.1002/chem.202202787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Indexed: 11/12/2022]
Abstract
The development of new vinylene-linked covalent organic frameworks (COFs) with special ionic structure and high stability is challenging. Herein, we report a facile, general method for constructing ionic vinylene-linked thiopyrylium-based COFs from 2,4,6-trimethylpyrylium tetrafluoroborate and other common reagents by means of acid-catalyzed Aldol condensation. Besides, pyrylium-, and pyridinium-based COFs also can be prepared from the same monomer under slightly different reaction conditions. The COFs exhibited uniform nanofibrous morphologies with excellent crystallinities, special ionic structures, well-defined nanochannels, and high specific surface areas.
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Affiliation(s)
- Haifeng Ji
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Gaojie Yan
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Peng Zou
- Downhole Technology Service Company, Bohai Drilling Engineering Company Limited, CNPC, Dagang, Tianjin, 300283, P. R. China
| | - Han Wang
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Mengke Li
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Yi Feng
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Xiongwei Qu
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Dongling Geng
- College of Science, Civil Aviation University of China, Tianjin, 300300, P. R. China
| | - Jingjing Shi
- School of Science, Nantong University, Nantong, 226019, Jiangsu Province, P. R. China
| | - Xiaojie Zhang
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
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Fatima SS, Borhan A, Ayoub M, Ghani NA. CO2 Adsorption Performance on Surface-Functionalized Activated Carbon Impregnated with Pyrrolidinium-Based Ionic Liquid. Processes (Basel) 2022; 10:2372. [DOI: 10.3390/pr10112372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Abstract
The serious environmental issues associated with CO2 emissions have triggered the search for energy efficient processes and CO2 capture technologies to control the amount of gas released into the atmosphere. One of the suitable techniques is CO2 adsorption using functionalized sorbents. In this study, a functionalized activated carbon (AC) material was developed via the wet impregnation technique. The AC was synthesized from a rubber seed shell (RSS) precursor using chemical activation and was later impregnated with different ratios of [bmpy][Tf2N] ionic liquid (IL). The AC was successfully functionalized with IL as confirmed by FTIR and Raman spectroscopy analyses. Incorporation of IL resulted in a reduction in the surface area and total pore volume of the parent adsorbent. Bare AC showed the largest SBET value of 683 m2/g, while AC functionalized with the maximum amount of IL showed 14 m2/g. A comparative analysis of CO2 adsorption data revealed that CO2 adsorption performance of AC is majorly affected by surface area and a pore-clogging effect. Temperature has a positive impact on the CO2 adsorption capacity of functionalized AC due to better dispersion of IL at higher temperatures. The CO2 adsorption capacity of AC (30) increased from 1.124 mmol/g at 25 °C to 1.714 mmol/g at 40 °C.
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Abstract
The rise of carbon dioxide (CO2) levels in the atmosphere emphasises the need for improving the current carbon capture and storage (CCS) technology. A conventional absorption method that utilises amine-based solvent is known to cause corrosion to process equipment. The solvent is easily degraded and has high energy requirement for regeneration. Amino acids are suitable candidates to replace traditional alkanolamines attributed to their identical amino functional group. In addition, amino acid salt is a green material due to its extremely low toxicity, low volatility, less corrosive, and high efficiency to capture CO2. Previous studies have shown promising results in CO2 capture using amino acids salts solutions and amino acid ionic liquids. Currently, amino acid solvents are also utilised to enhance the adsorption capacity of solid sorbents. This systematic review is the first to summarise the currently available amino acid-based adsorbents for CO2 capture using PRISMA method. Physical and chemical properties of the adsorbents that contribute to effective CO2 capture are thoroughly discussed. A total of four categories of amino acid-based adsorbents are evaluated for their CO2 adsorption capacities. The regeneration studies are briefly discussed and several limitations associated with amino acid-based adsorbents for CO2 capture are presented before the conclusion.
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Ziobrowski Z, Rotkegel A. Comparison of CO 2 Separation Efficiency from Flue Gases Based on Commonly Used Methods and Materials. MATERIALS 2022; 15:ma15020460. [PMID: 35057178 PMCID: PMC8780194 DOI: 10.3390/ma15020460] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 02/01/2023]
Abstract
The comparison study of CO2 removal efficiency from flue gases at low pressures and temperatures is presented, based on commonly used methods and materials. Our own experimental results were compared and analyzed for different methods of CO2 removal from flue gases: absorption in a packed column, adsorption in a packed column and membrane separation on polymeric and ceramic membranes, as well as on the developed supported ionic liquid membranes (SILMs). The efficiency and competitiveness comparison of the investigated methods showed that SILMs obtained by coating of the polydimethylsiloxane (PDMS) membrane with 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]) exhibit a high ideal CO2/N2 selectivity of 152, permeability of 2400 barrer and long term stability. Inexpensive and selective SILMs were prepared applying commercial membranes. Under similar experimental conditions, the absorption in aqueous Monoethanolamine (MEA) solutions is much faster than in ionic liquids (ILs), but gas and liquid flow rates in packed column sprayed with IL are limited due to the much higher viscosity and lower diffusion coefficient of IL. For CO2 adsorption on activated carbons impregnated with amine or IL, only a small improvement in the adsorption properties was achieved. The experimental research was compared with the literature data to find a feasible solution based on commercially available methods and materials.
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