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El-Hendawy MM, Desoky IM, Mohamed MMA, Curran HJ. Pyridinium-Inspired Organocatalysts for Carbon Dioxide Fixation: A Density Functional Theory Inspection. J Phys Chem A 2023; 127:29-37. [PMID: 36595451 DOI: 10.1021/acs.jpca.2c05931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The current project aims to apply the virtues of minimalism to examine the catalytic ability of commercially organic compounds of small chemical structures to catalyze the coupling reaction between carbon dioxide and propylene oxide (PO) under mild conditions. The proposed catalysts are pyridinium iodide (A), 2-hydroxypyridinium iodide (B), and piperidinium iodide (C), where their structure is based on cooperative acidic and nucleophilic motifs. The quantum chemistry model, M062X-D3/def2-TZVP//M062X-D3/def2-SVPP, was used to understand the reaction mechanism and the catalytic performance. Since the coupling reaction was performed under excess PO, we proposed that PO serves as a reactant and solvent. Therefore, calculations were performed in gas and liquid phases for comparison. The findings indicated that the rate-determining step depends on the chemical structure of the catalyst and whether the phase is a gas or liquid phase. In general, modeling in the liquid phase produces potential energy surfaces of lower energy barriers. The noncovalent interactions reflect the role of hydrogen bonding in controlling the kinetic behavior of the coupling reaction. Based on the finding, catalyst A is the best candidate for transforming CO2 into cyclic carbonates.
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Affiliation(s)
- Morad M El-Hendawy
- Department of Chemistry, Faculty of Science, New Valley University, Kharga 72511, Egypt.,Combustion Chemistry Centre, School of Chemistry, Ryan Institute, MaREI, National University of Ireland Galway, Galway H91 TK33, Ireland
| | - Ibtesam M Desoky
- Department of Chemistry, Faculty of Science, New Valley University, Kharga 72511, Egypt
| | - Mahmoud M A Mohamed
- Department of Chemistry, Faculty of Science, New Valley University, Kharga 72511, Egypt
| | - Henry J Curran
- Combustion Chemistry Centre, School of Chemistry, Ryan Institute, MaREI, National University of Ireland Galway, Galway H91 TK33, Ireland
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Chaban VV. Carbon Dioxide Chemisorption by Ammonium and Phosphonium Ionic Liquids: Quantum Chemistry Calculations. J Phys Chem B 2022; 126:5497-5506. [PMID: 35833871 DOI: 10.1021/acs.jpcb.2c02968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Carbon capture and storage is an important technological endeavor aiming to improve the ecology by combating global warming. The present work investigates reaction paths that are responsible for CO2 chemisorption by the ammonium- and phosphonium-based ionic liquids containing an aprotic heterocyclic anion 2-cyanopyrrolide. We exemplify that 2 mol of CO2 per 1 mol of the gas scavenger can be theoretically fixed by such ionic liquids. Both the cation and anion participate in the chemisorption. The corresponding standard enthalpies and potential energies are moderately negative. The chemisorption reaction, as revealed by the simulations of competing pathways, is started by the donation of the proton from the cation to the anion. The double covalent bond in the cation's structure emerges. The barriers to all reactions involving the phosphonium-based cation are relatively small and favor practical applications of the considered sorbents. The performance of the ammonium-based cation is less favorable due to the inherent instability of the tetraalkylammonium ylide. The role of phosphonium ylide in the mechanism of the reaction is carefully characterized. The performance of the aprotic anion as a CO2 scavenger is unaffected by the chemical identity of the counterion. The essential heights of the identified steric barriers underline the necessity to simulate the entire structures of the reacting species to obtain a reliable description of chemisorption. The reported results foster a fundamental understanding of the outstanding CO2 sorption performance of the quaternary ammonium- and phosphonium-based 2-cyanopyrrolides.
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Santos JL, Janegitz BC, de Oliveira MR, de Souza GL. Exploring the water hydrogen-bonding effects on the ground and low-lying excited states of serotonin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ma J, Wu Y, Yan X, Chen C, Wu T, Fan H, Liu Z, Han B. Efficient synthesis of cyclic carbonates from CO 2 under ambient conditions over Zn(betaine) 2Br 2: experimental and theoretical studies. Phys Chem Chem Phys 2022; 24:4298-4304. [PMID: 35107469 DOI: 10.1039/d1cp05553d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
It is very interesting to synthesize high value-added chemicals from CO2 under mild conditions with low energy consumption. Here, we report that a novel catalyst, Zn(betaine)2Br2, can efficiently promote the cycloaddition of CO2 with epoxides to synthesize cyclic carbonates under ambient conditions (30 °C, 1 atm). DFT calculations provide important insights into the mechanism, particularly the unusual synergistic catalytic action of Zn2+, Br- and NR4+, which is the critical factor for the outstanding performance of Zn(betaine)2Br2. The unique features of the catalyst are that it is cheap, green and very easy to prepare.
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Affiliation(s)
- Jun Ma
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yahui Wu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xupeng Yan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunjun Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Tianbin Wu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Honglei Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Zhimin Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.,Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing 101400, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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Chaban VV, Andreeva NA. Extensively amino-functionalized graphene captures carbon dioxide. Phys Chem Chem Phys 2022; 24:25801-25815. [DOI: 10.1039/d2cp03235j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Amino-functionalized graphene demonstrates certain potential to fix carbon dioxide.
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Affiliation(s)
| | - Nadezhda A. Andreeva
- Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russian Federation
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