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Pokochueva EV, Kountoupi E, Janák M, Kuznetsov DA, Prosvirin IP, Müller CR, Fedorov A, Koptyug IV. Implications for the Hydrogenation of Propyne and Propene with Parahydrogen due to the in situ Transformation of Rh 2C to Rh 0/C. Chemphyschem 2024:e202400270. [PMID: 38837531 DOI: 10.1002/cphc.202400270] [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: 03/30/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/07/2024]
Abstract
NMR spectroscopy studies using parahydrogen-induced polarization have previously established the existence of the pairwise hydrogen addition route in the hydrogenation of unsaturated hydrocarbons over heterogeneous catalysts, including those based on rhodium (Rh0). This pathway requires the incorporation of both hydrogen atoms from one hydrogen molecule to the same product molecule. However, the underlying mechanism for such pairwise hydrogen addition must be better understood. The involvement of carbon, either in the form of carbonaceous deposits on the surface of a catalyst or as a metal carbide phase, is known to modify catalytic properties significantly and thus could also affect the pairwise hydrogen addition route. Here, we explored carbon's role by studying the hydrogenation of propene and propyne with parahydrogen on a Rh2C catalyst and comparing the results with those for a Rh0/C catalyst obtained from Rh2C via H2 pretreatment. While the catalysts Rh2C and Rh0/C differ notably in the rate of conversion of parahydrogen to normal hydrogen as well as in terms of hydrogenation activity, our findings suggest that the carbide phase does not play a significant role in the pairwise H2 addition route on rhodium catalysts.
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Affiliation(s)
- Ekaterina V Pokochueva
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Institutskaya st. 3A, Novosibirsk, 630090, Russia
| | - Evgenia Kountoupi
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, 8092, Switzerland
| | - Marcel Janák
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, 8092, Switzerland
| | - Denis A Kuznetsov
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, 8092, Switzerland
| | - Igor P Prosvirin
- Boreskov Institute of Catalysis, SB RAS, Acad., Lavrent'yeva Av. 5, Novosibirsk, 630090, Russia
| | - Christoph R Müller
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, 8092, Switzerland
| | - Alexey Fedorov
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, 8092, Switzerland
| | - Igor V Koptyug
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Institutskaya st. 3A, Novosibirsk, 630090, Russia
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Pérez-Jiménez M, Corona H, de la Cruz-Martínez F, Campos J. Donor-Acceptor Activation of Carbon Dioxide. Chemistry 2023; 29:e202301428. [PMID: 37494303 DOI: 10.1002/chem.202301428] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023]
Abstract
The activation and functionalization of carbon dioxide entails great interest related to its abundance, low toxicity and associated environmental problems. However, the inertness of CO2 has posed a challenge towards its efficient conversion to added-value products. In this review we discuss one of the strategies that have been widely used to capture and activate carbon dioxide, namely the use of donor-acceptor interactions by partnering a Lewis acidic and a Lewis basic fragment. This type of CO2 activation resembles that found in metalloenzymes, whose outstanding performance in catalytically transforming carbon dioxide encourages further bioinspired research. We have divided this review into three general sections based on the nature of the active sites: metal-free examples (mainly formed by frustrated Lewis pairs), main group-transition metal combinations, and transition metal heterobimetallic complexes. Overall, we discuss one hundred compounds that cooperatively activate carbon dioxide by donor-acceptor interactions, revealing a wide range of structural motifs.
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Affiliation(s)
- Marina Pérez-Jiménez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Helena Corona
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Felipe de la Cruz-Martínez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
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Chemical conversion of CO2 into cyclic carbonates by two Metal–Organic frameworks. Polyhedron 2023. [DOI: 10.1016/j.poly.2022.116240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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