1
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Choe JH, Kim H, Yun H, Kurisingal JF, Kim N, Lee D, Lee YH, Hong CS. Extended MOF-74-Type Variant with an Azine Linkage: Efficient Direct Air Capture and One-Pot Synthesis. J Am Chem Soc 2024; 146:19337-19349. [PMID: 38953459 DOI: 10.1021/jacs.4c05318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Direct air capture (DAC) shows considerable promise for the effective removal of CO2; however, materials applicable to DAC are lacking. Among metal-organic framework (MOF) adsorbents, diamine-Mg2(dobpdc) (dobpdc4- = 4,4-dioxidobiphenyl-3,3'-dicarboxylate) effectively removes low-pressure CO2, but the synthesis of the organic ligand requires high temperature, high pressure, and a toxic solvent. Besides, it is necessary to isolate the ligand for utilization in the synthesis of the framework. In this study, we synthesized a new variant of extended MOF-74-type frameworks, M2(hob) (M = Mg2+, Co2+, Ni2+, and Zn2+; hob4- = 5,5'-(hydrazine-1,2-diylidenebis(methanylylidene))bis(2-oxidobenzoate)), constructed from an azine-bonded organic ligand obtained through a facile condensation reaction at room temperature. Functionalization of Mg2(hob) with N-methylethylenediamine, N-ethylethylenediamine, and N,N'-dimethylethylenediamine (mmen) enables strong interactions with low-pressure CO2, resulting in top-tier adsorption capacities of 2.60, 2.49, and 2.91 mmol g-1 at 400 ppm of CO2, respectively. Under humid conditions, the CO2 capacity was higher than under dry conditions due to the presence of water molecules that aid in the formation of bicarbonate species. A composite material combining mmen-Mg2(hob) and polyvinylidene fluoride, a hydrophobic polymer, retained its excellent adsorption performance even after 7 days of exposure to 40% relative humidity. In addition, the one-pot synthesis of Mg2(hob) from a mixture of the corresponding monomers is achieved without separate ligand synthesis steps; thus, this framework is suitable for facile large-scale production. This work underscores that the newly synthesized Mg2(hob) and its composites demonstrate significant potential for DAC applications.
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Affiliation(s)
- Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hyojin Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hongryeol Yun
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | | | - Namju Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Donggyu Lee
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Yong Hoon Lee
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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2
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Xiao C, Tian J, Chen Q, Hong M. Water-stable metal-organic frameworks (MOFs): rational construction and carbon dioxide capture. Chem Sci 2024; 15:1570-1610. [PMID: 38303941 PMCID: PMC10829030 DOI: 10.1039/d3sc06076d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/03/2024] [Indexed: 02/03/2024] Open
Abstract
Metal-organic frameworks (MOFs) are considered to be a promising porous material due to their excellent porosity and chemical tailorability. However, due to the relatively weak strength of coordination bonds, the stability (e.g., water stability) of MOFs is usually poor, which severely inhibits their practical applications. To prepare water-stable MOFs, several important strategies such as increasing the bonding strength of building units and introducing hydrophobic units have been proposed, and many MOFs with excellent water stability have been prepared. Carbon dioxide not only causes a range of climate and health problems but also is a by-product of some important chemicals (e.g., natural gas). Due to their excellent adsorption performances, MOFs are considered as a promising adsorbent that can capture carbon dioxide efficiently and energetically, and many water-stable MOFs have been used to capture carbon dioxide in various scenarios, including flue gas decarbonization, direct air capture, and purified crude natural gas. In this review, we first introduce the design and synthesis of water-stable MOFs and then describe their applications in carbon dioxide capture, and finally provide some personal comments on the challenges facing these areas.
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Affiliation(s)
- Cao Xiao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jindou Tian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
| | - Qihui Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Maochun Hong
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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3
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Choe JH, Kim H, Yun H, Kang M, Park S, Yu S, Hong CS. Boc Protection for Diamine-Appended MOF Adsorbents to Enhance CO 2 Recyclability under Realistic Humid Conditions. J Am Chem Soc 2024; 146:646-659. [PMID: 38151051 DOI: 10.1021/jacs.3c10475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Among the various metal-organic framework (MOF) adsorbents, diamine-functionalized Mg2(dobpdc) (dobpdc4- = 4,4-dioxidobiphenyl-3,3'-dicarboxylate) shows remarkable carbon dioxide removal performance. However, applying diamine-functionalized Mg2(dobpdc) in practical applications is premature because it shows persistent performance degradation under real flue gas conditions containing water vapor owing to diamine loss during wet cycles. To address this issue, we employed hydrophobic carbonate compounds to protect diamine groups in een-Mg2(dobpdc) (een-MOF, een = N-ethylethylenediamine). tert-Butyl dicarbonate (Boc) reacted rapidly with diamines at the pore openings of MOF particles to form dense secondary and tertiary hydrophobic amines, effectively preventing moisture ingress. The Boc-protected een-MOF-Boc1 maintained excellent CO2 adsorption even under simulated flue gas conditions containing 10% H2O. This observation indicates that Boc protection renders een groups intact during repeated wet cycles, suggesting that Boc-protected een groups are resistant to replacement by water molecules. To increase the practicability of the MOF adsorbent, we fabricated een-MOF/PAN-Boc1 composite beads by shaping MOF particles with polyacrylonitrile (PAN). Notably, the composite beads maintained their CO2 adsorption performance even after repeating the temperature swing adsorption process more than 150 times in 10% water vapor. Furthermore, breakthrough tests showed that the dynamic CO2 separation performance was retained under humid conditions. These results demonstrate that Boc protection provides an easy and effective way to develop promising adsorbents with high CO2 adsorption capacity, long-term durability, and the properties required for postcombustion applications.
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Affiliation(s)
- Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hyojin Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hongryeol Yun
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Minjung Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Sookyung Park
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Sumin Yu
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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4
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Åhlén M, Cheung O, Xu C. Low-concentration CO 2 capture using metal-organic frameworks - current status and future perspectives. Dalton Trans 2023; 52:1841-1856. [PMID: 36723043 DOI: 10.1039/d2dt04088c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The ever-increasing atmospheric CO2 level is considered to be the major cause of climate change. Although the move away from fossil fuel-based energy generation to sustainable energy sources would significantly reduce the release of CO2 into the atmosphere, it will most probably take time to be fully implemented on a global scale. On the other hand, capturing CO2 from emission sources or directly from the atmosphere are robust approaches that can reduce the atmospheric CO2 concentration in a relatively short time. Here, we provide a perspective on the recent development of metal-organic framework (MOF)-based solid sorbents that have been investigated for application in CO2 capture from low-concentration (<10 000 ppm) CO2 sources. We summarized the different sorbent engineering approaches adopted by researchers, both from the sorbent development and processing viewpoints. We also discuss the immediate challenges of using MOF-based CO2 sorbents for low-concentration CO2 capture. MOF-based materials, with tuneable pore properties and tailorable surface chemistry, and ease of handling, certainly deserve continued development into low-cost, efficient CO2 sorbents for low-concentration CO2 capture.
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Affiliation(s)
- Michelle Åhlén
- Division of Nanotechnology and Functional Materials, Department of Materials Science and Engineering, Uppsala University, Ångström Laboratory, SE-751 03 Uppsala, Box 35, Sweden.
| | - Ocean Cheung
- Division of Nanotechnology and Functional Materials, Department of Materials Science and Engineering, Uppsala University, Ångström Laboratory, SE-751 03 Uppsala, Box 35, Sweden.
| | - Chao Xu
- Division of Nanotechnology and Functional Materials, Department of Materials Science and Engineering, Uppsala University, Ångström Laboratory, SE-751 03 Uppsala, Box 35, Sweden.
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5
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Parker ST, Smith A, Forse AC, Liao WC, Brown-Altvater F, Siegelman RL, Kim EJ, Zill NA, Zhang W, Neaton JB, Reimer JA, Long JR. Evaluation of the Stability of Diamine-Appended Mg 2(dobpdc) Frameworks to Sulfur Dioxide. J Am Chem Soc 2022; 144:19849-19860. [PMID: 36265017 DOI: 10.1021/jacs.2c07498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diamine-appended Mg2(dobpdc) (dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate) metal-organic frameworks are a promising class of CO2 adsorbents, although their stability to SO2─a trace component of industrially relevant exhaust streams─remains largely untested. Here, we investigate the impact of SO2 on the stability and CO2 capture performance of dmpn-Mg2(dobpdc) (dmpn = 2,2-dimethyl-1,3-propanediamine), a candidate material for carbon capture from coal flue gas. Using SO2 breakthrough experiments and CO2 isobar measurements, we find that the material retains 91% of its CO2 capacity after saturation with a wet simulated flue gas containing representative levels of CO2 and SO2, highlighting the robustness of this framework to SO2 under realistic CO2 capture conditions. Initial SO2 cycling experiments suggest dmpn-Mg2(dobpdc) may achieve a stable operating capacity in the presence of SO2 after initial passivation. Evaluation of several other diamine-Mg2(dobpdc) variants reveals that those with primary,primary (1°,1°) diamines, including dmpn-Mg2(dobpdc), are more robust to humid SO2 than those featuring primary,secondary (1°,2°) or primary,tertiary (1°,3°) diamines. Based on the solid-state 15N NMR spectra and density functional theory calculations, we find that under humid conditions, SO2 reacts with the metal-bound primary amine in 1°,2° and 1°,3° diamine-appended Mg2(dobpdc) to form a metal-bound bisulfite species that is charge balanced by a primary ammonium cation, thereby facilitating material degradation. In contrast, humid SO2 reacts with the free end of 1°,1° diamines to form ammonium bisulfite, leaving the metal-diamine bond intact. This structure-property relationship can be used to guide further optimization of these materials for CO2 capture applications.
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Affiliation(s)
- Surya T Parker
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alex Smith
- Department of Physics, University of California Berkeley, Berkeley, California 94720, United States
| | - Alexander C Forse
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Wei-Chih Liao
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Florian Brown-Altvater
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States.,Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Rebecca L Siegelman
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Eugene J Kim
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Nicholas A Zill
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Wenjun Zhang
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Jeffrey B Neaton
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of Physics, University of California Berkeley, Berkeley, California 94720, United States.,Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United States
| | - Jeffrey A Reimer
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jeffrey R Long
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
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6
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Zhu X, Xie W, Wu J, Miao Y, Xiang C, Chen C, Ge B, Gan Z, Yang F, Zhang M, O'Hare D, Li J, Ge T, Wang R. Recent advances in direct air capture by adsorption. Chem Soc Rev 2022; 51:6574-6651. [PMID: 35815699 DOI: 10.1039/d1cs00970b] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Significant progress has been made in direct air capture (DAC) in recent years. Evidence suggests that the large-scale deployment of DAC by adsorption would be technically feasible for gigatons of CO2 capture annually. However, great efforts in adsorption-based DAC technologies are still required. This review provides an exhaustive description of materials development, adsorbent shaping, in situ characterization, adsorption mechanism simulation, process design, system integration, and techno-economic analysis of adsorption-based DAC over the past five years; and in terms of adsorbent development, affordable DAC adsorbents such as amine-containing porous materials with large CO2 adsorption capacities, fast kinetics, high selectivity, and long-term stability under ultra-low CO2 concentration and humid conditions. It is also critically important to develop efficient DAC adsorptive processes. Research and development in structured adsorbents that operate at low-temperature with excellent CO2 adsorption capacities and kinetics, novel gas-solid contactors with low heat and mass transfer resistances, and energy-efficient regeneration methods using heat, vacuum, and steam purge is needed to commercialize adsorption-based DAC. The synergy between DAC and carbon capture technologies for point sources can help in mitigating climate change effects in the long-term. Further investigations into DAC applications in the aviation, agriculture, energy, and chemical industries are required as well. This work benefits researchers concerned about global energy and environmental issues, and delivers perspective views for further deployment of negative-emission technologies.
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Affiliation(s)
- Xuancan Zhu
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Wenwen Xie
- Institute of Technical Thermodynamics, Karlsruhe Institute of Technology, 76131, Germany
| | - Junye Wu
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Yihe Miao
- China-UK Low Carbon College, Shanghai Jiao Tong University, No. 3 Yinlian Road, Shanghai 201306, China
| | - Chengjie Xiang
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Chunping Chen
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Bingyao Ge
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Zhuozhen Gan
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Fan Yang
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Man Zhang
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Dermot O'Hare
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Jia Li
- China-UK Low Carbon College, Shanghai Jiao Tong University, No. 3 Yinlian Road, Shanghai 201306, China.,Jiangmen Laboratory for Carbon and Climate Science and Technology, No. 29 Jinzhou Road, Jiangmen, 529100, China.,The Hong Kong University of Science and Technology (Guangzhou), No. 2 Huan Shi Road South, Nansha, Guangzhou, 511458, China
| | - Tianshu Ge
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Ruzhu Wang
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
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7
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Choe JH, Kim H, Kang M, Yun H, Kim SY, Lee SM, Hong CS. Functionalization of Diamine-Appended MOF-Based Adsorbents by Ring Opening of Epoxide: Long-Term Stability and CO 2 Recyclability under Humid Conditions. J Am Chem Soc 2022; 144:10309-10319. [PMID: 35657696 DOI: 10.1021/jacs.2c01488] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Although diamine-appended metal-organic framework (MOF) adsorbents exhibit excellent CO2 adsorption performance, a continuous decrease in long-term capacity during repeated wet cycles remains a formidable challenge for practical applications. Herein, we present the fabrication of diamine-appended Mg2(dobpdc)-alumina beads (een-MOF/Al-Si-Cx; een = N-ethylethylenediamine; x = number of carbon atoms attached to epoxide) coated with hydrophobic silanes and alkyl epoxides. The reaction of epoxides with diamines in the portal of the pore afforded sufficient hydrophobicity, hindered the penetration of water vapor into the pores, and rendered the modified diamines less volatile. een-MOF/Al-Si-C17-200 (een-MOF/Al-Si-C17-y; y = 50, 100, and 200, denoting wt % of C17 with respect to the bead, respectively), with substantial hydrophobicity, showed a significant uptake of 2.82 mmol g-1 at 40 °C and 15% CO2, relevant to flue gas concentration, and a reduced water adsorption. The modified beads maintained a high CO2 capacity for over 100 temperature-swing adsorption cycles in the presence of 5% H2O and retained CO2 separation performance in breakthrough tests under humid conditions. This result demonstrates that the epoxide coating provides a facile and effective method for developing promising adsorbents with high CO2 adsorption capacity and long-term durability, which is a required property for postcombustion applications.
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Affiliation(s)
- Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hyojin Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Minjung Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hongryeol Yun
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Sun Young Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Su Min Lee
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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8
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Choi DS, Kim DW, Lee JH, Chae YS, Kang DW, Hong CS. Diamine Functionalization of a Metal-Organic Framework by Exploiting Solvent Polarity for Enhanced CO 2 Adsorption. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38358-38364. [PMID: 34342422 DOI: 10.1021/acsami.1c10659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Diamine-appended metal-organic frameworks (MOFs) exhibit exceptional CO2 adsorption capacities over a wide pressure range because of the strong interaction between basic amine groups and acidic CO2. Given that their high CO2 working capacity is governed by solvent used during amine functionalization, a systematic investigation on solvent effect is essential but not yet demonstrated. Herein, we report a facile one-step solvent exchange route for the diamine functionalization of MOFs with open metal sites, using an efficient method to maximize diamine loading. We employed an MOF, Mg2(dobpdc) (dobpdc4- = 4,4'-dioxido-3,3'-biphenyldicarboxylate), which contains high-density open metal sites. Indirect grafting with N-ethylethylenediamine (een) was performed with a minimal amount of methanol (MeOH) via multiple MeOH exchanges and diamine functionalization, resulting in a top-tier CO2 adsorption capacity of 16.5 wt %. We established the correlation between N,N-dimethylformamide (DMF) loading and infrared peaks, which provides a simple method for determining the amount of the remaining DMF in Mg2(dobpdc). All interactions among Mg, DMF, diamine, and solvent were analyzed by van der Waals (vdw)-corrected density functional theory (DFT) calculations to elucidate the effect of chemical potential on diamine grafting.
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Affiliation(s)
- Doo San Choi
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Dae Won Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jung-Hoon Lee
- Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Yun Seok Chae
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Dong Won Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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9
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10
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Ju SE, Choe JH, Kang M, Kang DW, Kim H, Lee JH, Hong CS. Understanding Correlation Between CO 2 Insertion Mechanism and Chain Length of Diamine in Metal-Organic Framework Adsorbents. CHEMSUSCHEM 2021; 14:2426-2433. [PMID: 33871138 DOI: 10.1002/cssc.202100582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/16/2021] [Indexed: 06/12/2023]
Abstract
Although CO2 insertion is a predominant phenomenon in diamine-functionalized Mg2 (dobpdc) (dobpdc4- =4,4-dioxidobiphenyl-3,3'-dicarboxylate) adsorbents, a high-performance metal-organic framework for capturing CO2 , the fundamental function of the diamine carbon chain length in the mechanism remains unclear. Here, Mg2 (dobpdc) systems with open metal sites grafted by primary diamines NH2 -(CH2 )n -NH2 were developed, with en (n=2), pn (n=3), bn (n=4), pen (n=5), hn (n=6), and on (n=8). Based on CO2 adsorption and IR results, CO2 insertion is involved in frameworks with n=2 and 3 but not in systems with n≥5. According to NMR data, bn-appended Mg2 (dobpdc) exhibited three different chemical environments of carbamate units, attributed to different relative conformations of carbon chains upon CO2 insertion, as validated by first-principles density functional theory (DFT) calculations. For 1-hn and 1-on, DFT calculations indicated that diamine inter-coordinated open metal sites in adjacent chains bridged by carboxylates and phenoxides of dobpdc4- . Computed CO2 binding enthalpies for CO2 insertion (-27.8 kJ mol-1 for 1-hn and -20.2 kJ mol-1 for 1-on) were comparable to those for CO2 physisorption (-19.3 kJ mol-1 for 1-hn and -20.8 kJ mol-1 for 1-on). This suggests that CO2 insertion is likely to compete with CO2 physisorption on diamines of the framework when n≥5.
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Affiliation(s)
- Susan E Ju
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
| | - Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
| | - Minjung Kang
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
| | - Dong Won Kang
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
| | - Hyojin Kim
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
| | - Jung-Hoon Lee
- Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea
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11
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Abstract
Carbon capture from large sources and ambient air is one of the most promising strategies to curb the deleterious effect of greenhouse gases. Among different technologies, CO2 adsorption has drawn widespread attention mostly because of its low energy requirements. Considering that water vapor is a ubiquitous component in air and almost all CO2-rich industrial gas streams, understanding its impact on CO2 adsorption is of critical importance. Owing to the large diversity of adsorbents, water plays many different roles from a severe inhibitor of CO2 adsorption to an excellent promoter. Water may also increase the rate of CO2 capture or have the opposite effect. In the presence of amine-containing adsorbents, water is even necessary for their long-term stability. The current contribution is a comprehensive review of the effects of water whether in the gas feed or as adsorbent moisture on CO2 adsorption. For convenience, we discuss the effect of water vapor on CO2 adsorption over four broadly defined groups of materials separately, namely (i) physical adsorbents, including carbons, zeolites and MOFs, (ii) amine-functionalized adsorbents, and (iii) reactive adsorbents, including metal carbonates and oxides. For each category, the effects of humidity level on CO2 uptake, selectivity, and adsorption kinetics under different operational conditions are discussed. Whenever possible, findings from different sources are compared, paying particular attention to both similarities and inconsistencies. For completeness, the effect of water on membrane CO2 separation is also discussed, albeit briefly.
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Affiliation(s)
- Joel M Kolle
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Mohammadreza Fayaz
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Abdelhamid Sayari
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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12
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Zhang H, Zheng X, Yang LM, Ganz E. Properties and Detailed Adsorption of CO 2 by M 2(dobpdc) with N, N-Dimethylethylenediamine Functionalization. Inorg Chem 2021; 60:2656-2662. [PMID: 33491446 DOI: 10.1021/acs.inorgchem.0c03527] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have systematically investigated the CO2 adsorption performance and microscopic mechanism of N,N-dimethylethylenediamine (mm-2) appended M2(dobpdc) (dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate; M = Mg, Sc-Zn) with density functional theory. These calculations show that the mm-2 has strong interactions with the open metal site of these structures via the first amine, and the mm-2 binding energies are generally between 123 and 172 kJ/mol. After the CO2 is attached, the ammonium carbamate molecule is created by insertion. The CO2 adsorption energies (31-81 kJ/mol) depend on the metal used (Mg; Sc-Zn). The microscopic mechanism of the CO2 adsorption process is presented at the atomic level, and the detailed potential energy surface and reaction path information are provided. The CO2 molecule and mm-2 grafted M2(dobpdc) are firstly combined via physical interactions, and then, the complex is converted into an N-coordinated zwitterion intermediate over a large energy barrier (1.02-1.51 eV). Finally, the structure is rearranged into a stable ammonium carbamate configuration through a small energy barrier (0.05-0.25 eV). We hope that this research will contribute to the understanding and production of real-world carbon capture materials.
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Affiliation(s)
- Hui Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xin Zheng
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li-Ming Yang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Eric Ganz
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, Minnesota 55455, United States
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Hadjiivanov KI, Panayotov DA, Mihaylov MY, Ivanova EZ, Chakarova KK, Andonova SM, Drenchev NL. Power of Infrared and Raman Spectroscopies to Characterize Metal-Organic Frameworks and Investigate Their Interaction with Guest Molecules. Chem Rev 2020; 121:1286-1424. [DOI: 10.1021/acs.chemrev.0c00487] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Dimitar A. Panayotov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Mihail Y. Mihaylov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Elena Z. Ivanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Kristina K. Chakarova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Stanislava M. Andonova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Nikola L. Drenchev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
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Kim S, Yoon TU, Oh KH, Kwak J, Bae YS, Kim M. Positional Installation of Unsymmetrical Fluorine Functionalities onto Metal-Organic Frameworks for Efficient Carbon Dioxide Separation under Humid Conditions. Inorg Chem 2020; 59:18048-18054. [PMID: 33284016 DOI: 10.1021/acs.inorgchem.0c02496] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unsymmetrical trifluoro functional groups were installed onto metal-organic frameworks (MOFs) at positions regulated by ligand exchange for efficient CO2 separation under humid conditions. These trifluoro groups induced molecular separation via dipole-dipole interactions. Their installation onto amino-functionalized MOF surfaces produced hydrophobic and CO2-philic core-shell MOFs for efficient CO2 adsorption.
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Affiliation(s)
- Seongwoo Kim
- Department of Chemistry, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Tae-Ung Yoon
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Kwang Hyun Oh
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jaesung Kwak
- Infectious Diseases Therapeutic Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Youn-Sang Bae
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Min Kim
- Department of Chemistry, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Republic of Korea
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Zhang H, Yang LM, Ganz E. Formation Mechanism of Ammonium Carbamate for CO 2 Uptake in N, N'-Dimethylethylenediamine Grafted M 2(dobpdc). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14104-14112. [PMID: 33170717 DOI: 10.1021/acs.langmuir.0c02750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The adsorption properties and formation mechanism of ammonium carbamate for CO2 capture in N,N'-dimethylethylenediamine (mmen) grafted M2(dobpdc) (dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate; M = Mg, Sc-Zn, except Ni) have been studied via density functional theory (DFT) calculations. We see that the mmen molecule is joined to the metal site via a M-N bond and has hydrogen bonding with neighboring mmen molecules. The binding energies of mmen range from 135.4 to 184.0 kJ/mol. CO2 is captured via insertion into the M-N bond of mmen-M2(dobpdc), forming ammonium carbamate. The CO2 binding energies (35.2 to 92.2 kJ/mol) vary with different metal centers. Furthermore, the Bader charge analysis shows that the CO2 molecules acquire 0.42 to 0.47 |e|. This charge is mainly contributed by the mmen, and a small additional amount is from the metal atom bonded with the CO2. The preferred reaction pathway is a two-step reaction. In the first step, the hydrogen bonded complex B changes into an N-coordinated intermediate D with high barriers (0.69 to 1.58 eV). The next step involves the translation and rotation of the chain in the intermediate D, resulting in the formation of the final O-coordinated product I with barriers of 0.22 to 0.61 eV. The higher barriers of CO2 reaction with mmen-M2(dobpdc) relative to attack the primary amine might be due to the larger steric hindrance of mmen. We hope this work will contribute to an improved understanding and development of future amine-grafted materials for efficient CO2 capture.
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Affiliation(s)
- Hui Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li-Ming Yang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Eric Ganz
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Park J, Park JR, Choe JH, Kim S, Kang M, Kang DW, Kim JY, Jeong YW, Hong CS. Metal-Organic Framework Adsorbent for Practical Capture of Trace Carbon Dioxide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50534-50540. [PMID: 33131271 DOI: 10.1021/acsami.0c16224] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Control of indoor CO2 concentration to a safe level is important to human health. Metal-organic-framework-based adsorbents show superior adsorption performance at moderate CO2 concentration compared to other solid adsorbents but suffer from low capacities and high regeneration temperature at indoor CO2 concentrations and poor humidity stability. Herein, we report epn-grafted Mg2(dobpdc) (epn = 1-ethylpropane-1,3-diamine) showing a CO2 capacity of 12.2 wt % at an acceptable concentration of 1000 ppm and a practically low desorption temperature of 70 °C, which surpasses the performance of conventional solid adsorbents under the given conditions. After poly(dimethylsiloxane) coating, this material reveals a significant adsorption amount (∼10 wt %) in humid conditions (up to 98% relative humidity) with structural durability.
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Affiliation(s)
- Jinkyoung Park
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jeoung Ryul Park
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Saemi Kim
- Samsung Research, SEC 33, Seongchon-gil, Seocho-gu, Seoul 06765, Republic of Korea
| | - Minjung Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Dong Won Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jee Yeon Kim
- Samsung Research, SEC 33, Seongchon-gil, Seocho-gu, Seoul 06765, Republic of Korea
| | - Yong Won Jeong
- Samsung Research, SEC 33, Seongchon-gil, Seocho-gu, Seoul 06765, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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17
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Zhang H, Shang C, Yang LM, Ganz E. Elucidation of the Underlying Mechanism of CO 2 Capture by Ethylenediamine-Functionalized M 2(dobpdc) (M = Mg, Sc-Zn). Inorg Chem 2020; 59:16665-16671. [PMID: 33124798 DOI: 10.1021/acs.inorgchem.0c02654] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We, for the first time, systematically investigated the crystal structures, adsorption properties, and microscopic mechanism of CO2 capture with ethylenediamine (en)-appended isostructural M2(dobpdc) materials (M = Mg, Sc-Zn), using spin polarized density functional theory (DFT) calculations. The binding energies of en range from 142 to 210 kJ/mol. The weakest binding materials are en-Cr2(dobpdc) and en-Cu2(dobpdc). Two typical models, the pair model and the chain model, have been considered for CO2 adsorption. Generally, the chain model is more stable than the pair model. The CO2 adsorption energies of the chain model are in the range of 30-96 kJ/mol, with a strong metal dependence. Among these, the en-Sc2(dobpdc) and en-Cu2(dobpdc) have the highest and lowest CO2 adsorption energies, respectively. Moreover, the dynamic progress of CO2 adsorption has been unveiled via exploration of the full reaction pathway, including transition states and intermediates. First, the CO2 molecule interacts with en-MOFs to form a physisorbed complex with a shallow potential well. This is followed by overcoming a relatively large energy barrier to form a chemisorbed complex. Finally, ammonium carbamate is formed along the one-dimensional channels within the pore with a small energy barrier for configuration transformation. These results agree well with the experimental observations. Understanding the detailed microscopic mechanism of CO2 capture is quite crucial for improving our fundamental knowledge base and potential future applications. This work will improve our understanding of CO2 adsorption with amine functionalized MOFs. We expect our results to stimulate future experimental and theoretical research and advance the development of this field.
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Affiliation(s)
- Hui Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chunli Shang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li-Ming Yang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Eric Ganz
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, United States
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Zhang H, Yang LM, Pan H, Ganz E. Disclosing the microscopic mechanism and adsorption properties of CO 2 capture in N-isopropylethylenediamine appended M 2(dobpdc) series. Phys Chem Chem Phys 2020; 22:24614-24623. [PMID: 33094753 DOI: 10.1039/d0cp04068a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The detailed picture of the microscopic mechanism for CO2 capture in N-isopropylethylenediamine (i-2) functionalized M2(dobpdc) (dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate; M = Mg, Sc-Zn) has been determined for the first time via systematic computations with van der Waals (vdW) corrected density functional theory (DFT) methods. The results show that acting as a Lewis base, the i-2 molecule can strongly interact with the acidic open metal sites of M2(dobpdc) via its primary amine with binding energies of 132 to 178 kJ mol-1 for different metals. After exposure to gaseous CO2, CO2 is captured by inserting into the metal-N bond. The corresponding CO2 binding energies (43-69 kJ mol-1) vary depending on the metal centers. i-2-Sc2(dobpdc) and i-2-Mg2(dobpdc) with high CO2 binding energies have promising potential for CO2 capture. Moreover, the results demonstrate that the CO2 capture process involves two steps, consisting of simultaneous nucleophilic attack of the CO2 onto the metal-bound N atom with proton transfer. This results in the formation of a zwitterion intermediate (step1), and then rearrangement of the zwitterion intermediate into the final product ammonium carbamate (step2). The first step with relatively high barriers (0.99-1.49 eV) is rate-determining. The second step with low barriers (less than 0.50 eV) can easily occur and will promote the reaction. This work uncovers the complicated microscopic mechanism of CO2 capture with i-2 functionalized MOFs at the molecular level. This study provides fundamental understanding of the adsorption process and insights into the design and synthesis of highly efficient CO2 capture materials.
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Affiliation(s)
- Hui Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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Zhang H, Yang LM, Ganz E. Adsorption Properties and Microscopic Mechanism of CO 2 Capture in 1,1-Dimethyl-1,2-ethylenediamine-Grafted Metal-Organic Frameworks. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18533-18540. [PMID: 32227842 DOI: 10.1021/acsami.0c01927] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The adsorption properties and microscopic mechanism of CO2 adsorption in 1,1-dimethyl-1,2-ethylenediamine (dmen) functionalized M2(dobpdc) (dobpdc4-=4,4'-dioxidobiphenyl-3,3'-dicarboxylate; M = Mg, Sc-Zn) have been completely unveiled for the first time via comprehensive investigations based on first-principles density functional theory (DFT) calculations. The results show that for the primary-primary amine, dmen prefers to interact with the open metal site of M2(dobpdc) via the end with smaller steric hindrance. The binding energies of dmen with MOFs are in the range of 104-174 kJ/mol. In presence of CO2, it fully inserts into the metal-N bond, forming ammonium carbamate. The CO2 binding energies vary from 53 to 89 kJ/mol, showing strong metal dependence. Among the 11 metals, dmen-Sc2(dobpdc) and dmen-Mg2(dobpdc) have the highest CO2 binding energies of 89 and 84 kJ/mol, respectively, and may have large CO2 adsorption capacity for practical applications. More importantly, the microscopic CO2 capture process of dmen-M2(dobpdc) is revealed at the atomic level. The whole reaction process includes two steps, that is, formation of zwitterion intermediate (step 1) and rearrangement of the zwitterion intermediate (step 2). The first step in which nucleophilic addition between CO2 and the metal-bound amine and proton transfer from the metal-bound amine to free amine simultaneously occur is a rate-determining step, with higher energy barriers (0.99-1.35 eV). The second step with much lower barriers (maximum of 0.16 eV) is extremely easy, which can promote the whole CO2 uptake process in dmen-M2(dobpdc). This study provides a fundamental understanding of the underlying mechanism of the rather complicated CO2 adsorption process and sheds important insights on design, synthesis, and optimization of highly efficient CO2 capture materials.
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Affiliation(s)
- Hui Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li-Ming Yang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Materials Chemistry and Service Failure; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Eric Ganz
- School of Physics and Astronomy, University of Minnesota, 116 Church Street Southeast, Minneapolis, Minnesota 55455, United States
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Martell JD, Milner PJ, Siegelman RL, Long JR. Kinetics of cooperative CO 2 adsorption in diamine-appended variants of the metal-organic framework Mg 2(dobpdc). Chem Sci 2020; 11:6457-6471. [PMID: 34094111 PMCID: PMC8152673 DOI: 10.1039/d0sc01087a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon capture and sequestration is a key element of global initiatives to minimize anthropogenic greenhouse gas emissions. Although many investigations of new candidate CO2 capture materials focus on equilibrium adsorption properties, it is also critical to consider adsorption/desorption kinetics when evaluating adsorbent performance. Diamine-appended variants of the metal–organic framework Mg2(dobpdc) (dobpdc4− = 4,4′-dioxidobiphenyl-3,3′-dicarboxylate) are promising materials for CO2 capture because of their cooperative chemisorption mechanism and associated step-shaped equilibrium isotherms, which enable large working capacities to be accessed with small temperature swings. However, the adsorption/desorption kinetics of these unique materials remain understudied. More generally, despite the necessity of kinetics characterization to advance adsorbents toward commercial separations, detailed kinetic studies of metal–organic framework-based gas separations remain rare. Here, we systematically investigate the CO2 adsorption kinetics of diamine-appended Mg2(dobpdc) variants using a thermogravimetric analysis (TGA) assay. In particular, we examine the effects of diamine structure, temperature, and partial pressure on CO2 adsorption and desorption kinetics. Importantly, most diamine-appended Mg2(dobpdc) variants exhibit an induction period prior to reaching the maximum rate of CO2 adsorption, which we attribute to their unique cooperative chemisorption mechanism. In addition, these materials exhibit inverse Arrhenius behavior, displaying faster adsorption kinetics and shorter induction periods at lower temperatures. Using the Avrami model for nucleation and growth kinetics, we determine rate constants for CO2 adsorption and quantitatively compare rate constants among different diamine-appended variants. Overall, these results provide guidelines for optimizing adsorbent design to facilitate CO2 capture from diverse target streams and highlight kinetic phenomena relevant for other materials in which cooperative chemisorption mechanisms are operative. An in-depth investigation of the CO2 adsorption kinetics of a promising class of cooperative carbon capture materials offers new insight into their structure-performance properties.![]()
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Affiliation(s)
- Jeffrey D Martell
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Phillip J Milner
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | | | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley CA 94720 USA .,Department of Chemical and Biomolecular Engineering, University of California Berkeley CA 94720 USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
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Kim H, Lee HY, Kang DW, Kang M, Choe JH, Lee WR, Hong CS. Control of the Metal Composition in Bimetallic Mg/Zn(dobpdc) Constructed from a One-Dimensional Zn-Based Template. Inorg Chem 2019; 58:14107-14111. [DOI: 10.1021/acs.inorgchem.9b02126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyojin Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Hwa Young Lee
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Dong Won Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Minjung Kang
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jong Hyeak Choe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Woo Ram Lee
- Department of Chemistry, Sejong University, Seoul 05006, Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
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Siegelman RL, Milner PJ, Forse AC, Lee JH, Colwell KA, Neaton JB, Reimer JA, Weston SC, Long JR. Water Enables Efficient CO 2 Capture from Natural Gas Flue Emissions in an Oxidation-Resistant Diamine-Appended Metal-Organic Framework. J Am Chem Soc 2019; 141:13171-13186. [PMID: 31348649 DOI: 10.1021/jacs.9b05567] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Supported by increasingly available reserves, natural gas is achieving greater adoption as a cleaner-burning alternative to coal in the power sector. As a result, carbon capture and sequestration from natural gas-fired power plants is an attractive strategy to mitigate global anthropogenic CO2 emissions. However, the separation of CO2 from other components in the flue streams of gas-fired power plants is particularly challenging due to the low CO2 partial pressure (∼40 mbar), which necessitates that candidate separation materials bind CO2 strongly at low partial pressures (≤4 mbar) to capture ≥90% of the emitted CO2. High partial pressures of O2 (120 mbar) and water (80 mbar) in these flue streams have also presented significant barriers to the deployment of new technologies for CO2 capture from gas-fired power plants. Here, we demonstrate that functionalization of the metal-organic framework Mg2(dobpdc) (dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate) with the cyclic diamine 2-(aminomethyl)piperidine (2-ampd) produces an adsorbent that is capable of ≥90% CO2 capture from a humid natural gas flue emission stream, as confirmed by breakthrough measurements. This material captures CO2 by a cooperative mechanism that enables access to a large CO2 cycling capacity with a small temperature swing (2.4 mmol CO2/g with ΔT = 100 °C). Significantly, multicomponent adsorption experiments, infrared spectroscopy, magic angle spinning solid-state NMR spectroscopy, and van der Waals-corrected density functional theory studies suggest that water enhances CO2 capture in 2-ampd-Mg2(dobpdc) through hydrogen-bonding interactions with the carbamate groups of the ammonium carbamate chains formed upon CO2 adsorption, thereby increasing the thermodynamic driving force for CO2 binding. In light of the exceptional thermal and oxidative stability of 2-ampd-Mg2(dobpdc), its high CO2 adsorption capacity, and its high CO2 capture rate from a simulated natural gas flue emission stream, this material is one of the most promising adsorbents to date for this important separation.
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Affiliation(s)
| | | | | | | | | | - Jeffrey B Neaton
- Kavli Energy Nanosciences Institute at Berkeley , Berkeley , California 94720 , United States
| | | | - Simon C Weston
- Corporate Strategic Research , ExxonMobil Research and Engineering Company , Annandale , New Jersey 08801 , United States
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23
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Eom S, Kang DW, Kang M, Choe JH, Kim H, Kim DW, Hong CS. Fine-tuning of wettability in a single metal-organic framework via postcoordination modification and its reduced graphene oxide aerogel for oil-water separation. Chem Sci 2019; 10:2663-2669. [PMID: 30996982 PMCID: PMC6419944 DOI: 10.1039/c8sc04581j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/09/2019] [Indexed: 02/03/2023] Open
Abstract
Elaborate control of wettability in a single platform is essential for materials' applications towards oil-water separation, but it still remains challenging. Herein, we performed postcoordination modification of Mg2(dobpdc) with monoamines of various alkyl chain lengths, enabling both long-term hydrolytic stability and facile fine-tuning of wettability. An efficient separation of oil-water mixtures was achieved by using the octylamine-appended framework (OctA). We also prepared an OctA/reduced graphene oxide aerogel that showed exceptional absorption capacities towards organic solvents and oil as well as superb recyclability with maintained absorbency.
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Affiliation(s)
- Sunhwi Eom
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Dong Won Kang
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Minjung Kang
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Jong Hyeak Choe
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Hyojin Kim
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Dae Won Kim
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
| | - Chang Seop Hong
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea .
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24
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Kang M, Kang DW, Hong CS. Post-synthetic diamine-functionalization of MOF-74 type frameworks for effective carbon dioxide separation. Dalton Trans 2019; 48:2263-2270. [DOI: 10.1039/c8dt04339f] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Post-synthetic methods are considered facile and effective for adjusting a material's properties. This frontiers article highlights recent advances in the post-synthetic modifications of MOF-74 type frameworks, whose high-density exposed metal sites are grafted by various diamines, leading to the tuning of CO2 adsorption capabilities.
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Affiliation(s)
- Minjung Kang
- Department of Chemistry
- Korea University
- Seoul 02841
- Republic of Korea
| | - Dong Won Kang
- Department of Chemistry
- Korea University
- Seoul 02841
- Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry
- Korea University
- Seoul 02841
- Republic of Korea
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Forse AC, Milner PJ, Lee JH, Redfearn HN, Oktawiec J, Siegelman RL, Martell JD, Dinakar B, Porter-Zasada LB, Gonzalez MI, Neaton JB, Long JR, Reimer JA. Elucidating CO 2 Chemisorption in Diamine-Appended Metal-Organic Frameworks. J Am Chem Soc 2018; 140:18016-18031. [PMID: 30501180 DOI: 10.1021/jacs.8b10203] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The widespread deployment of carbon capture and sequestration as a climate change mitigation strategy could be facilitated by the development of more energy-efficient adsorbents. Diamine-appended metal-organic frameworks of the type diamine-M2(dobpdc) (M = Mg, Mn, Fe, Co, Ni, Zn; dobpdc4- = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate) have shown promise for carbon-capture applications, although questions remain regarding the molecular mechanisms of CO2 uptake in these materials. Here we leverage the crystallinity and tunability of this class of frameworks to perform a comprehensive study of CO2 chemisorption. Using multinuclear nuclear magnetic resonance (NMR) spectroscopy experiments and van-der-Waals-corrected density functional theory (DFT) calculations for 13 diamine-M2(dobpdc) variants, we demonstrate that the canonical CO2 chemisorption products, ammonium carbamate chains and carbamic acid pairs, can be readily distinguished and that ammonium carbamate chain formation dominates for diamine-Mg2(dobpdc) materials. In addition, we elucidate a new chemisorption mechanism in the material dmpn-Mg2(dobpdc) (dmpn = 2,2-dimethyl-1,3-diaminopropane), which involves the formation of a 1:1 mixture of ammonium carbamate and carbamic acid and accounts for the unusual adsorption properties of this material. Finally, we show that the presence of water plays an important role in directing the mechanisms for CO2 uptake in diamine-M2(dobpdc) materials. Overall, our combined NMR and DFT approach enables a thorough depiction and understanding of CO2 adsorption within diamine-M2(dobpdc) compounds, which may aid similar studies in other amine-functionalized adsorbents in the future.
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Affiliation(s)
| | - Phillip J Milner
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Jung-Hoon Lee
- Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | | | | | - Rebecca L Siegelman
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | | | - Bhavish Dinakar
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | | | | | - Jeffrey B Neaton
- Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.,Kavli Energy Nanosciences Institute at Berkeley , Berkeley , California 94720 , United States
| | - Jeffrey R Long
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Jeffrey A Reimer
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
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