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Dongare S, Zeeshan M, Aydogdu AS, Dikki R, Kurtoğlu-Öztulum SF, Coskun OK, Muñoz M, Banerjee A, Gautam M, Ross RD, Stanley JS, Brower RS, Muchharla B, Sacci RL, Velázquez JM, Kumar B, Yang JY, Hahn C, Keskin S, Morales-Guio CG, Uzun A, Spurgeon JM, Gurkan B. Reactive capture and electrochemical conversion of CO 2 with ionic liquids and deep eutectic solvents. Chem Soc Rev 2024; 53:8563-8631. [PMID: 38912871 DOI: 10.1039/d4cs00390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Ionic liquids (ILs) and deep eutectic solvents (DESs) have tremendous potential for reactive capture and conversion (RCC) of CO2 due to their wide electrochemical stability window, low volatility, and high CO2 solubility. There is environmental and economic interest in the direct utilization of the captured CO2 using electrified and modular processes that forgo the thermal- or pressure-swing regeneration steps to concentrate CO2, eliminating the need to compress, transport, or store the gas. The conventional electrochemical conversion of CO2 with aqueous electrolytes presents limited CO2 solubility and high energy requirement to achieve industrially relevant products. Additionally, aqueous systems have competitive hydrogen evolution. In the past decade, there has been significant progress toward the design of ILs and DESs, and their composites to separate CO2 from dilute streams. In parallel, but not necessarily in synergy, there have been studies focused on a few select ILs and DESs for electrochemical reduction of CO2, often diluting them with aqueous or non-aqueous solvents. The resulting electrode-electrolyte interfaces present a complex speciation for RCC. In this review, we describe how the ILs and DESs are tuned for RCC and specifically address the CO2 chemisorption and electroreduction mechanisms. Critical bulk and interfacial properties of ILs and DESs are discussed in the context of RCC, and the potential of these electrolytes are presented through a techno-economic evaluation.
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Affiliation(s)
- Saudagar Dongare
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Muhammad Zeeshan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Ahmet Safa Aydogdu
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Ruth Dikki
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Samira F Kurtoğlu-Öztulum
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, Sahinkaya Cad., Beykoz, 34820 Istanbul, Turkey
| | - Oguz Kagan Coskun
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Miguel Muñoz
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Avishek Banerjee
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Manu Gautam
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - R Dominic Ross
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Jared S Stanley
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Rowan S Brower
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Baleeswaraiah Muchharla
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Robert L Sacci
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - Jesús M Velázquez
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Bijandra Kumar
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Jenny Y Yang
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Christopher Hahn
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Seda Keskin
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Carlos G Morales-Guio
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alper Uzun
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Joshua M Spurgeon
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - Burcu Gurkan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
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2
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Ghosh T, Ren P, Franck P, Tang M, Jaworski A, Barcaro G, Monti S, Chouhan L, Rabeah J, Skorynina A, Silvestre-Albero J, Simonelli L, Rokicińska A, Debroye E, Kuśtrowski P, Bals S, Das S. A robust Fe-based heterogeneous photocatalyst for the visible-light-mediated selective reduction of an impure CO 2 stream. Chem Sci 2024; 15:11488-11499. [PMID: 39055026 PMCID: PMC11268485 DOI: 10.1039/d4sc02773f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 06/07/2024] [Indexed: 07/27/2024] Open
Abstract
The transformation of CO2 into value-added products from an impure CO2 stream, such as flue gas or exhaust gas, directly contributes to the principle of carbon capture and utilization (CCU). Thus, we have developed a robust iron-based heterogeneous photocatalyst that can convert the exhaust gas from the car into CO with an exceptional production rate of 145 μmol g-1 h-1. We characterized this photocatalyst by PXRD, XPS, ssNMR, EXAFS, XANES, HR-TEM, and further provided mechanistic experiments, and multi-scale/level computational studies. We have reached a clear understanding of its properties and performance that indicates that this highly robust photocatalyst could be used to design an efficient visible-light-mediated reduction strategy for the transformation of impure CO2 streams into value-added products.
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Affiliation(s)
- Topi Ghosh
- Department of Chemistry, University of Antwerp Antwerp Belgium
| | - Peng Ren
- Department of Chemistry, University of Antwerp Antwerp Belgium
- Department of Chemistry, University of Bayreuth Bayreuth Germany
| | - Philippe Franck
- Department of Chemistry, University of Antwerp Antwerp Belgium
| | - Min Tang
- EMAT and NANO Lab Center of Excellence, Department of Physics, University of Antwerp Antwerp Belgium
| | - Aleksander Jaworski
- Department of Materials and Environmental Chemistry, Stockholm University Stockholm Sweden
| | - Giovanni Barcaro
- CNR-IPCF, Institute for Chemical and Physical Processes via G. Moruzzi 1 56124 Pisa Italy
| | - Susanna Monti
- CNR-ICCOM, Institute of Chemistry of Organometallic Compounds via G. Moruzzi 1 56124 Pisa Italy
| | - Lata Chouhan
- Department of Chemistry, KU Leuven Leuven Belgium
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e. V Albert-Einstein-Straße 29a 18059 Rostock Germany
| | | | - Joaquin Silvestre-Albero
- Departamento de Quimica Inorganica-Instituto Universitario de Materiales, Universidad de Alicante Alicante E-03080 Spain
| | | | | | - Elke Debroye
- Department of Chemistry, KU Leuven Leuven Belgium
| | | | - Sara Bals
- EMAT and NANO Lab Center of Excellence, Department of Physics, University of Antwerp Antwerp Belgium
| | - Shoubhik Das
- Department of Chemistry, University of Antwerp Antwerp Belgium
- Department of Chemistry, University of Bayreuth Bayreuth Germany
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3
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Sanchez Merlinsky L, Hemmeter D, Baraldo LM, Maier F, Steinrück HP, Williams FJ. Unlocking the Fluorine-Free Buoy Effect: Surface-Enriched Ruthenium Polypyridine Complexes in Ionic Liquids. ChemistryOpen 2024; 13:e202400092. [PMID: 38687137 PMCID: PMC11230926 DOI: 10.1002/open.202400092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Indexed: 05/02/2024] Open
Abstract
Controlling the local concentration of metal complexes at the surface of ionic liquids (ILs) is a highly sought-after objective due to its pivotal implications in supported ionic liquid phase (SILP) catalysis. Equally important is to avoid per- and polyfluorinated substances due to environmental concerns. Herein, we investigate the surface enrichment of Ru polypyridyl complexes with fluorine-free alkylic side groups of varying lengths and shapes, using the hydrophilic IL [C2C1Im][OAc] as solvent. Additional charged carboxylate groups are included into the polypyridyl ligands to increase the solubility of the complex in the IL. When the ligand system is functionalized with long and hydrophobic alkyl side chains, the complex predominantly localizes at the IL/vacuum interface, as deduced from angle-resolved X-ray photoelectron spectroscopy. Conversely, in the presence of short or more bulky substituents, no surface enrichment is observed. This buoy-like behaviour with fluorine-free side groups is explored for 0.05 %mol to 1 %mol solutions. Intriguingly, surface saturation occurs at approximately 0.5 %mol, which is beneficial to the efficient operation of catalytic systems featuring high surface areas, such as SILP catalysts.
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Affiliation(s)
- Luciano Sanchez Merlinsky
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel Hemmeter
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen, Germany
| | - Luis M Baraldo
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Florian Maier
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen, Germany
| | - Hans-Peter Steinrück
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen, Germany
| | - Federico J Williams
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
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4
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Koranchalil S, Lobo Justo Pinheiro D, Padilla R, Nielsen M. Homogeneous Catalyzed Direct Conversion of Furfural to Gamma-Valerolactone. CHEMSUSCHEM 2024; 17:e202301608. [PMID: 38415323 DOI: 10.1002/cssc.202301608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/18/2024] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
Herein, we report the direct conversion of biomass-derived furfural to γ-valerolactone (GVL) in a one-pot system, using the combination of Ru-MACHO-BH and a Brønsted acid (H3PO4). A GVL yield of 84 % is achieved under mild reaction conditions using 1 mol% of Ru-MACHO-BH and 3.8 M H3PO4(aq) at 100 °C for 7 hours.
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Affiliation(s)
- Sakhitha Koranchalil
- Department of Chemistry, Technical University of Denmark (DTU), Kemitorvet 207, DK-2800, Lyngby, Denmark
| | | | - Rosa Padilla
- Department of Chemistry, Technical University of Denmark (DTU), Kemitorvet 207, DK-2800, Lyngby, Denmark
| | - Martin Nielsen
- Department of Chemistry, Technical University of Denmark (DTU), Kemitorvet 207, DK-2800, Lyngby, Denmark
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5
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Dupont J, Leal BC, Lozano P, Monteiro AL, Migowski P, Scholten JD. Ionic Liquids in Metal, Photo-, Electro-, and (Bio) Catalysis. Chem Rev 2024; 124:5227-5420. [PMID: 38661578 DOI: 10.1021/acs.chemrev.3c00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Ionic liquids (ILs) have unique physicochemical properties that make them advantageous for catalysis, such as low vapor pressure, non-flammability, high thermal and chemical stabilities, and the ability to enhance the activity and stability of (bio)catalysts. ILs can improve the efficiency, selectivity, and sustainability of bio(transformations) by acting as activators of enzymes, selectively dissolving substrates and products, and reducing toxicity. They can also be recycled and reused multiple times without losing their effectiveness. ILs based on imidazolium cation are preferred for structural organization aspects, with a semiorganized layer surrounding the catalyst. ILs act as a container, providing a confined space that allows modulation of electronic and geometric effects, miscibility of reactants and products, and residence time of species. ILs can stabilize ionic and radical species and control the catalytic activity of dynamic processes. Supported IL phase (SILP) derivatives and polymeric ILs (PILs) are good options for molecular engineering of greener catalytic processes. The major factors governing metal, photo-, electro-, and biocatalysts in ILs are discussed in detail based on the vast literature available over the past two and a half decades. Catalytic reactions, ranging from hydrogenation and cross-coupling to oxidations, promoted by homogeneous and heterogeneous catalysts in both single and multiphase conditions, are extensively reviewed and discussed considering the knowledge accumulated until now.
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Affiliation(s)
- Jairton Dupont
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain
| | - Bárbara C Leal
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Pedro Lozano
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Universidad de Murcia, P.O. Box 4021, E-30100 Murcia, Spain
| | - Adriano L Monteiro
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Pedro Migowski
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
| | - Jackson D Scholten
- Institute of Chemistry - Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Porto Alegre 91501-970 RS, Brasil
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6
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Koch CJ, Goeppert A, Surya Prakash GK. Addition of Imidazolium-Based Ionic Liquid to Improve Methanol Production in Polyamine-Assisted CO 2 Capture and Conversion Systems Using Pincer Catalysts. CHEMSUSCHEM 2024:e202301789. [PMID: 38594207 DOI: 10.1002/cssc.202301789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/11/2024]
Abstract
Ionic liquids have been studied as CO2 capture agents. However, they are rarely used in combined CO2 capture and conversion processes. Utilizing imidazolium-based ionic liquids, the conversion of CO2 to methanol was greatly improved in polyamine assisted systems catalyzed by homogeneous pincer catalysts with Ru and Mn metal centers. Among the ionic liquids tested, [BMIM]OAc was found to perform the best under the given reaction conditions. Among the polyamine tested, pentaethylenehexamine (PEHA) led to the highest conversion rates. Ru-Macho and Ru-Macho-BH were the most active catalysts. Direct air capture utilizing PEHA as the capture material was also demonstrated and produced an 86 % conversion of the captured CO2 to methanol in the presence of [BMIM]OAc.
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Affiliation(s)
- Christopher J Koch
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, CA 90089-1661, USA
| | - Alain Goeppert
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, CA 90089-1661, USA
| | - G K Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, 837 Bloom Walk, Los Angeles, CA 90089-1661, USA
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7
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Guo Z, Ding X, Wang Y. How To Get Isocyanate? ACS OMEGA 2024; 9:11168-11180. [PMID: 38496933 PMCID: PMC10938423 DOI: 10.1021/acsomega.3c10069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/11/2024] [Accepted: 02/14/2024] [Indexed: 03/19/2024]
Abstract
Isocyanate, a pivotal chemical intermediate to synthesize polyurethane with widespread applications in household appliances, automobiles, and construction, is predominantly produced via the phosgene process, which currently holds a paramount status in industrial isocyanate production. Nonetheless, concerns arise from the toxicity of phosgene and the corrosiveness of hydrogen chloride, posing safety hazards. The synthesis of isocyanate using nonphosgene methods represents a promising avenue for future development. This article primarily focuses on the nonphosgene approach, which involves the formation of carbamate through the reaction of nitro-amino compounds with carbon monoxide, dimethyl carbonate, and urea, among other reagents, subsequently leading to the thermal decomposition of carbamate to get isocyanate. This paper emphasizes the progress in catalyst development during the carbamate decomposition process. Single-component metal catalysts, particularly zinc, exhibit advantages such as high activity, cost-effectiveness, and compatibility with a wide range of substrates. Composite catalysts enhance isocyanate yield by introducing a second component to adjust the active metal composition. The central research direction aims to optimize catalyst adaptation to reaction conditions, including temperature, pressure, time, and solvent, to achieve high raw material conversion and product yield.
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Affiliation(s)
- Zhuhua Guo
- School of Chemical Engineering
and Technology, Hebei University of Technology, Tianjin 300401, PR China
| | - Xiaoshu Ding
- School of Chemical Engineering
and Technology, Hebei University of Technology, Tianjin 300401, PR China
| | - Yanji Wang
- School of Chemical Engineering
and Technology, Hebei University of Technology, Tianjin 300401, PR China
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8
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Freese T, Meijer JT, Brands MB, Alachouzos G, Stuart MCA, Tarozo R, Gerlach D, Smits J, Rudolf P, Reek JNH, Feringa BL. Iron oxide-promoted photochemical oxygen reduction to hydrogen peroxide (H 2O 2). EES CATALYSIS 2024; 2:262-275. [PMID: 38222062 PMCID: PMC10782808 DOI: 10.1039/d3ey00256j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 01/16/2024]
Abstract
Hydrogen peroxide (H2O2) is a valuable green oxidant with a wide range of applications. Furthermore, it is recognized as a possible future energy carrier achieving safe operation, storage and transportation. The photochemical production of H2O2 serves as a promising alternative to the waste- and energy-intensive anthraquinone process. Following the 12 principles of Green Chemistry, we demonstrate a facile and general approach to sustainable catalyst development utilizing earth-abundant iron and biobased sources only. We developed several iron oxide (FeOx) nanoparticles (NPs) for successful photochemical oxygen reduction to H2O2 under visible light illumination (445 nm). Achieving a selectivity for H2O2 of >99%, the catalyst material could be recycled for up to four consecutive rounds. An apparent quantum yield (AQY) of 0.11% was achieved for the photochemical oxygen reduction to H2O2 with visible light (445 nm) at ambient temperatures and pressures (9.4-14.8 mmol g-1 L-1). Reaching productivities of H2O2 of at least 1.7 ± 0.3 mmol g-1 L-1 h-1, production of H2O2 was further possible via sunlight irradiation and in seawater. Finally, a detailed mechanism has been proposed on the basis of experimental investigation of the catalyst's properties and computational results.
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Affiliation(s)
- Thomas Freese
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Jelmer T Meijer
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Maria B Brands
- van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Georgios Alachouzos
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Marc C A Stuart
- Electron Microscopy, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen Nijenborgh 7 9747AG Groningen The Netherlands
| | - Rafael Tarozo
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Dominic Gerlach
- Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Joost Smits
- Shell Global Solutions International BV Grasweg 31 1031 HW Amsterdam The Netherlands
| | - Petra Rudolf
- Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Joost N H Reek
- van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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9
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Ge S, Gong L, Yi P, Mo X, Liu C, Yi XY, He P. N-Site Regulation of Pyridyltriazole in Cp*Ir(N̂N)(H 2O) Complexes Achieving Catalytic FA Dehydrogenation. Inorg Chem 2023; 62:18375-18383. [PMID: 37910633 DOI: 10.1021/acs.inorgchem.3c01649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A series of novel Cp*Ir complexes with nitrogen-rich N̂N bidentate ligands were developed for the catalytic dehydrogenation of formic acid in water under base-free conditions. These complexes were synthesized by using pyridyl 1,2,4-triazole, methylated species, or pyridyl 1,2,3-triazole as a N-site regulation ligand and were fully characterized. Complex 1-H2O bearing 1,2,4-triazole achieved a high turnover frequency of 14192 h-1 at 90 °C in 4 M FA aqueous solution. The terminal and bridged Ir-H intermediates of 1-H2O were successfully detected by 1H NMR and mass spectrometry measurements. Kinetic isotope effect experiments and density functional theory (DFT) calculations were performed; then a plausible mechanism was proposed involving the β-hydride elimination and formation of H2. Water-assisted H2 release was proven to be the rate-determining step of the reaction. The distribution of Mulliken charges on N atoms of triazole ligand internally revealed that the ortho site N2 of 1-H2O with a higher electron density was conducive to efficient proton transfer. Additionally, the advantage of water-assisted short-range bridge of 1,2,4-triazole moieties led to a higher catalytic activity of 1-H2O. This study demonstrated the effectiveness of nitrogen-rich ligands on FA dehydrogenation and revealed a good strategy for N site regulation in the development of new homogeneous catalysts.
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Affiliation(s)
- Shun Ge
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Lishan Gong
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Pingping Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Xiufang Mo
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Chao Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Xiao-Yi Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Piao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China
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10
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Kushwaha S, Parthiban J, Singh SK. Recent Developments in Reversible CO 2 Hydrogenation and Formic Acid Dehydrogenation over Molecular Catalysts. ACS OMEGA 2023; 8:38773-38793. [PMID: 37901502 PMCID: PMC10601445 DOI: 10.1021/acsomega.3c05286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/27/2023] [Indexed: 10/31/2023]
Abstract
Carbon dioxide (CO2), a valuable feedstock, can be reutilized as a hydrogen carrier by hydrogenating CO2 to formic acid (FA) and releasing hydrogen by FA dehydrogenation in a reversible manner. Notably, FA is liquid at room temperature and can be stored and transported considerably more safely than hydrogen gas. Herein, we extensively reviewed transition-metal-based molecular catalysts explored for reversible CO2 hydrogenation and FA dehydrogenation. This Review describes different approaches explored for carbon-neutral hydrogen storage and release by applying CO2 hydrogenation to FA/formate and the subsequent release of H2 by the dehydrogenation of FA over a wide range of molecular catalysts based on noble and non-noble metals. Emphasis is also placed on the specific catalyst-to-substrate interaction by highlighting the specific role of the catalyst in the CO2 hydrogenation-FA dehydrogenation pathway.
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Affiliation(s)
| | | | - Sanjay Kumar Singh
- Catalysis Group, Department
of Chemistry, Indian Institute of Technology
Indore, Simrol, Indore 453552, Madhya Pradesh, India
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