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Yin G, Zhang C, Liu Y, Sun Y, Qi X. Modulation of Photocatalytic CO 2 Reduction by n- p Codoping Engineering of Single-Atom Catalysts. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1183. [PMID: 39057859 PMCID: PMC11280387 DOI: 10.3390/nano14141183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/04/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024]
Abstract
Transition metal (TM) single-atom catalysts (SACs) have been widely applied in photocatalytic CO2 reduction. In this work, n-p codoping engineering is introduced to account for the modulation of photocatalytic CO2 reduction on a two-dimensional (2D) bismuth-oxyhalide-based cathode by using first-principles calculation. n-p codoping is established via the Coulomb interactions between the negatively charged TM SACs and the positively charged Cl vacancy (VCl) in the dopant-defect pairs. Based on the formation energy of charged defects, neutral dopant-defect pairs for the Fe, Co, and Ni SACs (PTM0) and the -1e charge state of the Cu SAC-based pair (PCu-1) are stable. The electrostatic attraction of the n-p codoping strengthens the stability and solubility of TM SACs by neutralizing the oppositely charged VCl defect and TM dopant. The n-p codoping stabilizes the electron accumulation around the TM SACs. Accumulated electrons modify the d-orbital alignment and shift the d-band center toward the Fermi level, enhancing the reducing capacity of TM SACs based on the d-band theory. Besides the electrostatic attraction of the n-p codoping, the PCu-1 also accumulates additional electrons surrounding Cu SACs and forms a half-occupied dx2-y2 state, which further upshifts the d-band center and improves photocatalytic CO2 reduction. The metastability of Cl multivacancies limits the concentration of the n-p pairs with Cl multivacancies (PTM@nCl (n > 1)). Positively charged centers around the PTM@nCl (n > 1) hinders the CO2 reduction by shielding the charge transfer to the CO2 molecule.
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Affiliation(s)
- Guowei Yin
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
| | - Chunxiao Zhang
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Xiangtan University, Xiangtan 411105, China
| | - Yundan Liu
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Xiangtan University, Xiangtan 411105, China
| | - Yuping Sun
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
| | - Xiang Qi
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Xiangtan University, Xiangtan 411105, China
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2
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Durfy CS, Zurakowski JA, Drover MW. A Blueprint for Secondary Coordination Sphere Editing: Approaches Toward Lewis-Acid Assisted Carbon Dioxide Co-Activation. CHEMSUSCHEM 2024; 17:e202400039. [PMID: 38358843 DOI: 10.1002/cssc.202400039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/17/2024]
Abstract
Carbon dioxide (CO2) is a potent greenhouse gas of environmental concern. Seeking to offer a solution to the "CO2-problem", the chemistry community has turned a focus toward transition metal complexes which can activate, reduce, and convert CO2 into carbon-based products. The design of such systems involves judicious selection of both metal and accompanying donor ligand; in part, these efforts are motivated by biological metalloenzymes that undertake similar transformations. As a design element, metal-ligand cooperativity, which leverages intramolecular interactions between a transition metal and an adjacent secondary ligand site, has been acknowledged as a vitally important component by the CO2 activation community. These systems offer a "push-pull" style of activation where electron density is chaperoned onto CO2 with an accompanying electrophile, such as a Lewis-acid, playing the role of acceptor. This pairing allows for the stabilization of reactive CxHyOz-containing intermediates and can bias CO2 product selectivity. In the laboratory, chemists can test hypotheses and ideas, enabling rationalization of why a given pairing of transition metal/Lewis-acid leads to selective CO2 reduction outcomes. This Concept identifies literature examples and highlights key design properties, allowing interested contributors to design, create, and implement novel systems for productive transformations of a small molecule (CO2) with huge potential impact.
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Affiliation(s)
- Connor S Durfy
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario, Canada, N6A 3K7
| | - Joseph A Zurakowski
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario, Canada, N6A 3K7
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada, N9B 3P4
| | - Marcus W Drover
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario, Canada, N6A 3K7
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3
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Sarkar P, Sarkar S, Nayek A, Adarsh NN, Pal AK, Datta A, Dey A, Ghosh P. Low Potential CO 2 Reduction by Inert Fe(II)-Macrobicyclic Complex: A New Concept of Cavity Assisted CO 2 Activation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304794. [PMID: 37888827 DOI: 10.1002/smll.202304794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/04/2023] [Indexed: 10/28/2023]
Abstract
The advantage of a pre-organized π-cavity of Fe(II) complex of a newly developed macrobicycle cryptand is explored for CO2 reduction by overcoming the problem of high overpotential associated with the inert nature of the cryptate. Thus, a bipyridine-centered tritopic macrobicycle having a molecular π-cavity capable of forming Fe(II) complex as well as potential for CO2 encapsulation is synthesized. The inert Fe(II)-cryptate shows much lower potential in cyclic voltammetry than the Fe(II)-tris-dimethylbipyridine (Fe-MBP) core. Interestingly, this cryptate shows electrochemical CO2 reduction at a considerably lower potential than the Fe-MBP inert core. Therefore, this study represents that a well-structured π-cavity may generate a new series of molecular catalysts for the CO2 reduction reaction (CO2 RR), even with the inert metal complexes.
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Affiliation(s)
- Piyali Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
- Institute of Health Sciences, Presidency University, Second Campus, Plot No. DG/02/02, Premises No. 14-0358, Action Area-ID, New Town, Kolkata, West Bengal, 700156, India
| | - Sayan Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
| | - Abhijit Nayek
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
| | - Nayarassery N Adarsh
- Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Ave., Potsdam, NY, 13699, USA
| | - Arun K Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India
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4
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Droghetti F, Amati A, Pascale F, Crochet A, Pastore M, Ruggi A, Natali M. Catalytic CO 2 Reduction with Heptacoordinated Polypyridine Complexes: Switching the Selectivity via Metal Replacement. CHEMSUSCHEM 2024; 17:e202300737. [PMID: 37846888 DOI: 10.1002/cssc.202300737] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/18/2023]
Abstract
The discovery of molecular catalysts for the CO2 reduction reaction (CO2 RR) in the presence of water, which are both effective and selective towards the generation of carbon-based products, is a critical task. Herein we report the catalytic activity towards the CO2 RR in acetonitrile/water mixtures by a cobalt complex and its iron analog both featuring the same redox-active ligand and an unusual seven-coordination environment. Bulk electrolysis experiments show that the cobalt complex mainly yields formate (52 % selectivity at an applied potential of -2.0 V vs Fc+ /Fc and 1 % H2 O) or H2 (up to 86 % selectivity at higher applied bias and water content), while the iron complex always delivers CO as the major product (selectivity >74 %). The different catalytic behavior is further confirmed under photochemical conditions with the [Ru(bpy)3 ]2+ sensitizer (bpy=2,2'-bipyridine) and N,N-diisopropylethylamine as electron donor, where the cobalt complex leads to preferential H2 formation (up to 89 % selectivity), while the iron analog quantitatively generates CO (up to 88 % selectivity). This is ascribed to a preference towards a metal-hydride vs. a metal-carboxyl pathway for the cobalt and the iron complex, respectively, and highlights how metal replacement may effectively impact on the reactivity of transition metal complexes towards solar fuel formation.
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Affiliation(s)
- Federico Droghetti
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Agnese Amati
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Fabien Pascale
- Laboratoire de Physique et Chimie Théoretiques, University of Lorraine & CNRS, 54000, Nancy, France
| | - Aurélien Crochet
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Mariachiara Pastore
- Laboratoire de Physique et Chimie Théoretiques, University of Lorraine & CNRS, 54000, Nancy, France
| | - Albert Ruggi
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Mirco Natali
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
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5
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Durfy CS, Zurakowski JA, Jobin G, Drover MW. An Investigation of Allyl-Substituted Bis(Diphosphine) Iron Complexes: Towards Precursors for Cooperative CO 2 Activation. Chemistry 2024; 30:e202302721. [PMID: 37724786 DOI: 10.1002/chem.202302721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
In developing homogenous catalysts capable of CO2 activation, interaction with a metal center is often imperative. This work provides primary efforts towards the cooperative activation of CO2 using a Lewis acidic secondary coordination sphere (SCS) and iron via a paired theoretical/experimental approach. Specifically, this study reports efforts towards [Fe(diphosphine)2 (N2 )] as a CO2 -coordinated synthon where diphosphine=1,2-bis(di(3-cyclohexylboranyl)propylphosphino)ethane) (P2 BCy 4 ) or its precursor, 1,2-bis(diallylphosphino)ethane (tape). Initial efforts toward the {Fe(0)-N2 } complex were focused on deprotonation reactions of [Fe(diphosphine)2 (H)(NCCH3 )]+ and reduction of [Fe(tape)2 Cl2 ]. In the latter case, a mixture of intramolecularly π-bonded alkene and associated metallacyclic Fe(II)-H species were produced - heating this mixture provided the hydride as the major product. Notably, the interconversion of this pair counters that of related intermolecular reactions between [Fe(depe)2 ] (depe=1,2-bis(diethylphosphino)ethane) and ethylene, where hydride formation occurs subsequent to π-coordination; this has been probed by theoretical calculations. Finally, reactivity of the metallacyclic {Fe(II)-H} complex with CO2 was probed, resulting in a pair of isomeric ferra(II)lactones.
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Affiliation(s)
- Connor S Durfy
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON, N9B 3P4, Canada
- Department of Chemistry, Western University, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Joseph A Zurakowski
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON, N9B 3P4, Canada
- Department of Chemistry, Western University, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Gabriel Jobin
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON, N9B 3P4, Canada
- Department of Chemistry, Western University, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Marcus W Drover
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON, N9B 3P4, Canada
- Department of Chemistry, Western University, 1151 Richmond Street, London, ON, N6A 3K7, Canada
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6
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Liu Y, Wang D, Yang B, Li Z, Peng X, Liu Z, Zeng L, Zhang T, Rodriguez RD, Lei L, Hou Y. Efficiently electrochemical CO2 reduction on molybdenum-nitrogen-carbon catalysts with optimized p-block axial ligands. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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7
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Koolen CD, Luo W, Züttel A. From Single Crystal to Single Atom Catalysts: Structural Factors Influencing the Performance of Metal Catalysts for CO 2 Electroreduction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Cedric David Koolen
- Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
- Empa Materials Science & Technology, Dübendorf 8600, Switzerland
| | - Wen Luo
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Andreas Züttel
- Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis, Energypolis, Sion 1951, Switzerland
- Empa Materials Science & Technology, Dübendorf 8600, Switzerland
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8
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Water coordinated on Cu(I)-based catalysts is the oxygen source in CO 2 reduction to CO. Nat Commun 2022; 13:2577. [PMID: 35562192 PMCID: PMC9095693 DOI: 10.1038/s41467-022-30289-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 04/12/2022] [Indexed: 11/21/2022] Open
Abstract
Catalytic reduction of CO2 over Cu-based catalysts can produce various carbon-based products such as the critical intermediate CO, yet significant challenges remain in shedding light on the underlying mechanisms. Here, we develop a modified triple-stage quadrupole mass spectrometer to monitor the reduction of CO2 to CO in the gas phase online. Our experimental observations reveal that the coordinated H2O on Cu(I)-based catalysts promotes CO2 adsorption and reduction to CO, and the resulting efficiencies are two orders of magnitude higher than those without H2O. Isotope-labeling studies render compelling evidence that the O atom in produced CO originates from the coordinated H2O on catalysts, rather than CO2 itself. Combining experimental observations and computational calculations with density functional theory, we propose a detailed reaction mechanism of CO2 reduction to CO over Cu(I)-based catalysts with coordinated H2O. This study offers an effective method to reveal the vital roles of H2O in promoting metal catalysts to CO2 reduction. Understanding the underlying mechanisms for catalytic reduction of CO2 over Cu based catalysts remains challenging. Here, the authors develop an effective method to reveal the vital roles of H2O in promoting metal catalysts to CO2 reduction via a modified triple stage quadrupole mass spectrometer.
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9
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Pugliese E, Gotico P, Wehrung I, Boitrel B, Quaranta A, Ha-Thi MH, Pino T, Sircoglou M, Leibl W, Halime Z, Aukauloo A. Dissection of Light-Induced Charge Accumulation at a Highly Active Iron Porphyrin: Insights in the Photocatalytic CO 2 Reduction. Angew Chem Int Ed Engl 2022; 61:e202117530. [PMID: 35080122 DOI: 10.1002/anie.202117530] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Indexed: 11/09/2022]
Abstract
Iron porphyrins are among the best molecular catalysts for the electrocatalytic CO2 reduction reaction. Powering these catalysts with the help of photosensitizers comes along with a couple of unsolved challenges that need to be addressed with much vigor. We have designed an iron porphyrin catalyst decorated with urea functions (UrFe) acting as a multipoint hydrogen bonding scaffold towards the CO2 substrate. We found a spectacular photocatalytic activity reaching unreported TONs and TOFs as high as 7270 and 3720 h-1 , respectively. While the Fe0 redox state has been widely accepted as the catalytically active species, we show here that the FeI species is already involved in the CO2 activation, which represents the rate-determining step in the photocatalytic cycle. The urea functions help to dock the CO2 upon photocatalysis. DFT calculations bring support to our experimental findings that constitute a new paradigm in the catalytic reduction of CO2 .
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Affiliation(s)
- Eva Pugliese
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405, Orsay, France
| | - Philipp Gotico
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay (ISMO), 91405, Orsay, France
| | - Iris Wehrung
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405, Orsay, France
| | - Bernard Boitrel
- Institut des Sciences Chimiques de Rennes (ISCR), Université Rennes 1, 35042, Rennes, France
| | - Annamaria Quaranta
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Minh-Huong Ha-Thi
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay (ISMO), 91405, Orsay, France
| | - Thomas Pino
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay (ISMO), 91405, Orsay, France
| | - Marie Sircoglou
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405, Orsay, France
| | - Winfried Leibl
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
| | - Zakaria Halime
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405, Orsay, France
| | - Ally Aukauloo
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405, Orsay, France.,Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
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10
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Rickmeyer K, Niederegger L, Keilwerth M, Hess CR. Multifaceted Role of the Noninnocent Mabiq Ligand in Promoting Selective Reduction of CO2 to CO. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kerstin Rickmeyer
- Department of Chemistry and Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Lukas Niederegger
- Department of Chemistry and Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Martin Keilwerth
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Corinna R. Hess
- Department of Chemistry and Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany
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11
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Pugliese E, Gotico P, Wehrung I, Boitrel B, Quaranta A, Ha‐Thi M, Pino T, Sircoglou M, Leibl W, Halime Z, Aukauloo A. Dissection of Light‐Induced Charge Accumulation at a Highly Active Iron Porphyrin: Insights in the Photocatalytic CO
2
Reduction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eva Pugliese
- Université Paris-Saclay, CNRS Institut de chimie moléculaire et des matériaux d'Orsay 91405 Orsay France
| | - Philipp Gotico
- Université Paris-Saclay, CNRS Institut des Sciences Moléculaires d'Orsay (ISMO) 91405 Orsay France
| | - Iris Wehrung
- Université Paris-Saclay, CNRS Institut de chimie moléculaire et des matériaux d'Orsay 91405 Orsay France
| | - Bernard Boitrel
- Institut des Sciences Chimiques de Rennes (ISCR) Université Rennes 1 35042 Rennes France
| | - Annamaria Quaranta
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS Université Paris-Saclay 91198 Gif-sur-Yvette France
| | - Minh‐Huong Ha‐Thi
- Université Paris-Saclay, CNRS Institut des Sciences Moléculaires d'Orsay (ISMO) 91405 Orsay France
| | - Thomas Pino
- Université Paris-Saclay, CNRS Institut des Sciences Moléculaires d'Orsay (ISMO) 91405 Orsay France
| | - Marie Sircoglou
- Université Paris-Saclay, CNRS Institut de chimie moléculaire et des matériaux d'Orsay 91405 Orsay France
| | - Winfried Leibl
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS Université Paris-Saclay 91198 Gif-sur-Yvette France
| | - Zakaria Halime
- Université Paris-Saclay, CNRS Institut de chimie moléculaire et des matériaux d'Orsay 91405 Orsay France
| | - Ally Aukauloo
- Université Paris-Saclay, CNRS Institut de chimie moléculaire et des matériaux d'Orsay 91405 Orsay France
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS Université Paris-Saclay 91198 Gif-sur-Yvette France
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Liu K, Liu C. One-Pot Synthesis of Dimethyl Carbonate over a Binary Catalyst of an Ionic Liquid and an Alkali Carbonate under Low Pressure. ACS OMEGA 2021; 6:13839-13846. [PMID: 34095676 PMCID: PMC8173548 DOI: 10.1021/acsomega.1c01395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/10/2021] [Indexed: 05/03/2023]
Abstract
A mild and highly efficient approach has been developed for the one-pot synthesis of dimethyl carbonate (DMC) from epoxide, carbon dioxide, and methanol under low initial pressure. The key to the successful transformation is the use of a bicomponent catalytic system composed of a hydroxyl-functionalized ionic liquid and an alkali carbonate. This bicomponent catalytic system demonstrated excellent reusability in four runs. Under the optimal reaction conditions, a 64% yield of DMC from propylene oxide and an 81% yield of DMC from ethylene oxide were obtained.
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13
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First Phenol Carboxylation with CO 2 on Carbon Nanostructured C@Fe-Al 2O 3 Hybrids in Aqueous Media under Mild Conditions. NANOMATERIALS 2021; 11:nano11010190. [PMID: 33451099 PMCID: PMC7828619 DOI: 10.3390/nano11010190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 11/25/2022]
Abstract
Novel hybrid materials with integrated catalytic properties and hydrophobic response, C@Fe–Al2O3 hybrid samples, were presented and tested as catalysts for phenol reaction in aqueous solutions at atmospheric pressure and mild temperature conditions, using CO2 as a feedstock. A series of carbon-coated γ-alumina pellets (C@Fe–Al2O3) were synthesized and characterized by TGA, Brunauer–Emmett–Teller (BET) method, Raman spectroscopy, SEM, TEM, and XPS in order to get comprehensive knowledge of their properties at the nanoscale and relate them with their catalytic behavior. The results obtained correlated their catalytic activities with their carbon surface compositions. The application of these materials as active catalysts in the Kolbe–Schmitt reaction for CO2 conversion in aqueous media was proposed as an alternative reaction for the valorization of exhausts industrial effluents. In these early tests, the highest conversion of phenol was observed for the hybrid samples with the highest graphitic characteristic and the most hydrophobic behavior. Carboxylation products such as benzoic acid, p-hydroxybenzoic acid, and salicylic acid, have been identified under these experimental conditions.
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