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Bikogiannakis AK, Lymperi A, Dimitropoulos P, Bourikas K, Katsaounis A, Kyriakou G. CO 2 Reforming of Methane over Ru Supported Catalysts Under Mild Conditions. Molecules 2025; 30:2135. [PMID: 40430307 PMCID: PMC12114345 DOI: 10.3390/molecules30102135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2025] [Revised: 05/04/2025] [Accepted: 05/10/2025] [Indexed: 05/29/2025] Open
Abstract
The CO2 (Dry) Reforming of Methane (DRM) is a key process for reducing CO2 and CH4 emissions while producing syngas with an H2/CO ratio of 1, ideal for Fischer-Tropsch synthesis. This study explores DRM and the Reverse Water Gas Shift (RWGS) reaction under mild conditions using Ru-based catalysts supported on CeO2, YSZ, TiO2, and SiO2, with three reactant ratios: (i) stoichiometric, PCO2 = 1 kPa, PCH4 = 1 kPa, (ii) oxidizing, PCO2 = 2 kPa, PCH4 = 1 kPa, and (iii) reducing, PCO2 = 1 kPa, PCH4 = 4 kPa. The results highlight the importance of redox support for catalyst stability, with mobile lattice oxygen aiding carbon gasification. While Ru/CeO2 is stable at high temperatures, it rapidly deactivates at low temperatures, emphasizing the need for precise metal particle size control. This work demonstrates the necessity of fine-tuning catalyst properties for more sustainable DRM, offering insights for next-generation CO2 utilization catalysts.
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Affiliation(s)
- Alexandros K. Bikogiannakis
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (A.K.B.); (A.L.); (P.D.); (A.K.)
| | - Andriana Lymperi
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (A.K.B.); (A.L.); (P.D.); (A.K.)
| | - Paraskevas Dimitropoulos
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (A.K.B.); (A.L.); (P.D.); (A.K.)
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, 26504 Patras, Greece
| | - Kyriakos Bourikas
- School of Science and Technology, Hellenic Open University, 26335 Patras, Greece;
| | - Alexandros Katsaounis
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (A.K.B.); (A.L.); (P.D.); (A.K.)
| | - Georgios Kyriakou
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (A.K.B.); (A.L.); (P.D.); (A.K.)
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2
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Zhou W, Docherty SR, Lam E, Ehinger C, Zhou X, Hou Y, Laveille P, Copéret C. Conversion of Syngas to Ethanol over a RhFe Alloy Catalyst. J Am Chem Soc 2025; 147:12890-12896. [PMID: 40192617 DOI: 10.1021/jacs.5c01751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2025]
Abstract
The direct conversion of syngas to ethanol is a promising route for the sustainable production of value-added chemicals and fuels. While Fe-promoted Rh-based catalysts have long been studied because of their notable activity and selectivity toward ethanol, the catalyst structure and the nature of Rh-Fe interaction remain poorly understood under reaction conditions, due to the intrinsic complexity of heterogeneous catalysts prepared by conventional approaches. In this work, we construct well-defined RhFe@SiO2 model catalysts via surface organometallic chemistry, composed of small and narrowly distributed nanoparticles supported on silica. Such a RhFe@SiO2 catalyst converts syngas into ethanol, reaching an overall ethanol selectivity of 38% among all products at 8.4% CO conversion, while the nonpromoted Rh@SiO2 catalyst mostly yields methane (selectivity >90%) and no ethanol. Detailed in situ X-ray absorption spectroscopy and diffuse-reflectance infrared Fourier transform spectroscopy studies reveal that the RhFe@SiO2 catalyst corresponds to an Rh-Fe alloy with ca. 3:1 Rh/Fe ratio alongside residual FeII single sites. The alloy is stable under working conditions, promoting high activity and ethanol selectivity.
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Affiliation(s)
- Wei Zhou
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
| | - Scott R Docherty
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
| | - Erwin Lam
- Swiss Cat+ East, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Christian Ehinger
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
| | - Xiaoyu Zhou
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
| | - Yuhui Hou
- Swiss Cat+ East, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Paco Laveille
- Swiss Cat+ East, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zurich, Switzerland
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3
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Liu F, Yi X, Liu T, Chen W, Yang J, Xiao Y, Qin Y, Song L, Zheng A. Microenvironment perturbations driving methanol low-temperature conversion over zeolite. SCIENCE ADVANCES 2025; 11:eads4018. [PMID: 39970221 PMCID: PMC11837997 DOI: 10.1126/sciadv.ads4018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Accepted: 01/17/2025] [Indexed: 02/21/2025]
Abstract
Compared to methanol, dimethyl ether (DME) is a more ideal and attractive raw material for industrial applications. Typically, the industrially zeolite-catalyzed methanol dehydration to DME occurs at temperatures above 423 kelvin. Improving catalytic reactivity and reducing energy consumption are urgently needed but remain challenging. Here, we report an unexplored associative strategy to realize DME formation at room temperature and the generation of olefins even at 413 kelvin, which is achieved by coinjecting basic acetone to manipulate the local chemical microenvironment of the methanol reactant inside the H-ZSM-5 zeolite. The crucial role of acetone in accelerating methanol direct dehydration to DME is highlighted as the obvious destabilization effect for the adsorbed methanol cluster with strong hydrogen bonds and the subsequent traction of water during DME formation. These findings offer more insights into the rational design of reaction systems by manipulating the local surroundings to regulate catalytic performances and should represent a large step forward in methanol conversion technology.
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Affiliation(s)
- Fengqing Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Tangkang Liu
- Interdisciplinary Institute of NMR and Molecular Sciences, Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Jiabao Yang
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Yao Xiao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Yucai Qin
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Lijuan Song
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- Interdisciplinary Institute of NMR and Molecular Sciences, Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
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4
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Li S, Feng L, Wang H, Lin Y, Sun Z, Xu L, Xu Y, Liu X, Li WX, Wei S, Liu JX, Lu J. Atomically intimate assembly of dual metal-oxide interfaces for tandem conversion of syngas to ethanol. NATURE NANOTECHNOLOGY 2025; 20:255-264. [PMID: 39587351 DOI: 10.1038/s41565-024-01824-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 10/14/2024] [Indexed: 11/27/2024]
Abstract
Selective conversion of syngas to value-added higher alcohols (containing two or more carbon atoms), particularly to a specific alcohol, is of great interest but remains challenging. Here we show that atomically intimate assembly of FeOx-Rh-ZrO2 dual interfaces by selectively architecting highly dispersed FeOx on ultrafine raft-like Rh clusters supported on tetragonal zirconia enables highly efficient tandem conversion of syngas to ethanol. The ethanol selectivity in oxygenates reached ~90% at CO conversion up to 51%, along with a markedly high space-time yield of ethanol of 668.2 mg gcat-1 h-1. In situ spectroscopic characterization and theoretical calculations reveal that Rh-ZrO2 interface promotes dissociative CO activation into CHx through a formate pathway, while the adjacent Rh-FeOx interface accelerates subsequent C-C coupling via nondissociative CO insertion. Consequently, these dual interfaces in atomic-scale proximity with complementary functionalities synergistically boost the exclusive formation of ethanol with exceptional productivity in a tandem manner.
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Affiliation(s)
- Shang Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China
| | - Li Feng
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China
| | - Hengwei Wang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China.
| | - Yue Lin
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Zhihu Sun
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Lulu Xu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China
| | - Yuxing Xu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China
| | | | - Wei-Xue Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Shiqiang Wei
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Jin-Xun Liu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Junling Lu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China.
- Suzhou Laboratory, Suzhou, China.
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5
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Zhang F, Zhang H, Zhao Y, Li J, Guan C, Li J, Wang X, Mu Y, Zan WY, Zhu S. Partial thermal atomization of residual Ni NPs in single-walled carbon nanotubes for efficient CO 2 electroreduction. Chem Sci 2024; 15:20565-20572. [PMID: 39600498 PMCID: PMC11587534 DOI: 10.1039/d4sc07291j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2024] [Accepted: 11/15/2024] [Indexed: 11/29/2024] Open
Abstract
CO2 electroreduction (CO2RR) is an important solution for converting inert CO2 into high value-added fuels and chemicals under mild conditions. The decisive factor lies in the rational design and preparation of cost-effective and high-performance electrocatalysts. Herein, we first prepare a novel f-SWNTs-650 catalyst via a facile partial thermal atomization strategy, where the residual Ni particles in single-walled carbon nanotubes (SWNTs) are partially converted into atomically dispersed NiN4 species. CO2RR results show that the competitive evolution hydrogen reaction (HER) predominates on pristine SWNTs, while f-SWNTs-650 switches the CO2 reduction product to CO, achieving a CO faradaic efficiency (FECO) of 97.9% and a CO partial current density (j CO) of -15.6 mA cm-2 at -0.92 V vs. RHE. Moreover, FECO is higher than 95% and j CO remains at -10.0 mA cm-2 at -0.82 V vs. RHE after 48 h potentiostatic electrolysis. Combined with systematic characterization and density functional theory (DFT) calculations, the superior catalytic performance of f-SWNTs-650 is attributed to the synergistic effect between the NiN4 sites and adjacent Ni NPs, that is, Ni NPs inject electrons into NiN4 sites to form electron-enriched Ni centers and reduce the energy barrier for CO2 activation to generate the rate-limiting *COOH intermediate, thus implementing the efficient electroreduction of CO2.
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Affiliation(s)
- Fengwei Zhang
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Han Zhang
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Yang Zhao
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 Liaoning P. R. China
| | - Jingjing Li
- Address Research Institute of Resource-based Economy Transformation and Development, Shanxi University of Finance and Economics Taiyuan 030006 P. R. China
| | - Chong Guan
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Jijie Li
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Xuran Wang
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Yuewen Mu
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Wen-Yan Zan
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
| | - Sheng Zhu
- Institute of Crystalline Materials, Institute of Molecular Science, Key Lab of Materials for Energy Conversion and Storage of Shanxi Province, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University Taiyuan 030006 P. R. China
- Institute for Carbon-Based Thin Film Electronics, Peking University, Shanxi (ICTFE-PKU) Taiyuan 030012 P. R. China
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6
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Schulz-Mirbach H, Wichmann P, Satanowski A, Meusel H, Wu T, Nattermann M, Burgener S, Paczia N, Bar-Even A, Erb TJ. New-to-nature CO 2-dependent acetyl-CoA assimilation enabled by an engineered B 12-dependent acyl-CoA mutase. Nat Commun 2024; 15:10235. [PMID: 39592584 PMCID: PMC11599936 DOI: 10.1038/s41467-024-53762-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Accepted: 10/22/2024] [Indexed: 11/28/2024] Open
Abstract
Acetyl-CoA is a key metabolic intermediate and the product of various natural and synthetic one-carbon (C1) assimilation pathways. While an efficient conversion of acetyl-CoA into other central metabolites, such as pyruvate, is imperative for high biomass yields, available aerobic pathways typically release previously fixed carbon in the form of CO2. To overcome this loss of carbon, we develop a new-to-nature pathway, the Lcm module, in this study. The Lcm module provides a direct link between acetyl-CoA and pyruvate, is shorter than any other oxygen-tolerant route and notably fixes CO2, instead of releasing it. The Lcm module relies on the new-to-nature activity of a coenzyme B12-dependent mutase for the conversion of 3-hydroxypropionyl-CoA into lactyl-CoA. We demonstrate Lcm activity of the scaffold enzyme 2-hydroxyisobutyryl-CoA mutase from Bacillus massiliosenegalensis, and further improve catalytic efficiency 10-fold by combining in vivo targeted hypermutation and adaptive evolution in an engineered Escherichia coli selection strain. Finally, in a proof-of-principle, we demonstrate the complete Lcm module in vitro. Overall, our work demonstrates a synthetic CO2-incorporating acetyl-CoA assimilation route that expands the metabolic solution space of central carbon metabolism, providing options for synthetic biology and metabolic engineering.
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Affiliation(s)
- Helena Schulz-Mirbach
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany
| | - Philipp Wichmann
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany
| | - Ari Satanowski
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany.
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, Germany.
| | - Helen Meusel
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, Germany
| | - Tong Wu
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, Germany
| | - Maren Nattermann
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany
| | - Simon Burgener
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany
| | - Nicole Paczia
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany
| | - Arren Bar-Even
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, Germany
| | - Tobias J Erb
- Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Str. 10, Marburg, Germany.
- Center for Synthetic Microbiology (SYNMIKRO), Karl-von-Frisch-Straße 14, Marburg, Germany.
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7
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Zhang KX, Liu ZP. In Situ Surfaced Mn-Mn Dimeric Sites Dictate CO Hydrogenation Activity and C 2 Selectivity over MnRh Binary Catalysts. J Am Chem Soc 2024; 146:27138-27151. [PMID: 39295520 DOI: 10.1021/jacs.4c10052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2024]
Abstract
Massive ethanol production has long been a dream of human society. Despite extensive research in past decades, only a few systems have the potential of industrialization: specifically, Mn-promoted Rh (MnRh) binary heterogeneous catalysts were shown to achieve up to 60% C2 oxygenates selectivity in converting syngas (CO/H2) to ethanol. However, the active site of the binary system has remained poorly characterized. Here, large-scale machine-learning global optimization is utilized to identify the most stable Mn phases on Rh metal surfaces under reaction conditions by exploring millions of likely structures. We demonstrate that Mn prefers the subsurface sites of Rh metal surfaces and is able to emerge onto the surface forming MnRh surface alloy once the oxidative O/OH adsorbates are present. Our machine-learning-based transition state exploration further helps to resolve automatedly the whole reaction network, including 74 elementary reactions on various MnRh surface sites, and reveals that the Mn-Mn dimeric site at the monatomic step edge is the true active site for C2 oxygenate formation. The turnover frequency of the C2 product on the Mn-Mn dimeric site at MnRh steps is at least 107 higher than that on pure Rh steps from our microkinetic simulations, with the selectivity to the C2 product being 52% at 523 K. Our results demonstrate the key catalytic role of Mn-Mn dimeric sites in allowing C-O bond cleavage and facilitating the hydrogenation of O-terminating C2 intermediates, and rule out Rh metal by itself as the active site for CO hydrogenation to C2 oxygenates.
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Affiliation(s)
- Ke-Xiang Zhang
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Zhi-Pan Liu
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
- State Key Laboratory of Metal Organic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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8
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Yang M, Bai B, Bai H, Wei Z, Cao H, Zuo Z, Gao Z, Vinokurov VA, Zuo J, Wang Q, Huang W. On the nature of Cu-carbon interaction through N-modification for enhanced ethanol synthesis from syngas and methanol. Phys Chem Chem Phys 2024. [PMID: 39027937 DOI: 10.1039/d4cp01599a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Direct conversion of syngas into ethanol is an attractive process because of its short route and high-added value, but remains an enormous challenge due to the low selectivity caused by unclear active sites. Here, the Cu(111) supported N-modified graphene fragments C13-mNm/Cu(111) (m = 0-2) are demonstrated to be an efficient catalyst for fabricating ethanol from syngas and methanol. Our results suggest that the Cu-carbon interaction not only facilitates CO activation, but also significantly affects the adsorption stability of C2 intermediates and finally changes the fundamental reaction mechanism. The impeded hydrogenation performance of C13/Cu(111) due to the introduced Cu-carbon interaction is dramatically improved by N-doping. Multiple analyses reveal that the promoted electron transfer and the enhanced electron endowing ability of C13-mNm/Cu(111) (m = 1-2) to the co-adsorbed CH3CHxOH (x = 0-1) and H are deemed to be mainly responsible for the remarkable enhancement in hydrogenation ability. From the standpoint of the frontier molecular orbital, the decreased HOMO-LUMO gap and the increased overlap extent of HOMO and LUMO with the doping of N atoms also further verify the more facile hydrogenation reactions. Clearly, the Cu-carbon interaction through N-modification is of critical importance in ethanol formation. The final hydrogenation reaction during ethanol formation is deemed to be the rate-controlling step. The insights gained here could shed new light on the nature of Cu-carbon interaction in carbon material modified Cu-based catalysts for ethanol synthesis, which could be extended to design and modify other metal-carbon catalysts.
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Affiliation(s)
- Mingxue Yang
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Bing Bai
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Hui Bai
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Zhongzeng Wei
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Haojie Cao
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Zhijun Zuo
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Zhihua Gao
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Vladimir A Vinokurov
- Department of Physical and Colloid Chemistry, Gubkin Russian State University of Oil and Gas (National Research University), Leninskiy prospect 65/1, Moscow, 119991, Russia
| | - Jianping Zuo
- School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
| | - Qiang Wang
- National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Wei Huang
- State Key Laboratory of Clean and Efficient Coal Utilization, college of chemical engineering and technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
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9
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Suvarna M, Zou T, Chong SH, Ge Y, Martín AJ, Pérez-Ramírez J. Active learning streamlines development of high performance catalysts for higher alcohol synthesis. Nat Commun 2024; 15:5844. [PMID: 38992019 PMCID: PMC11239856 DOI: 10.1038/s41467-024-50215-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 07/01/2024] [Indexed: 07/13/2024] Open
Abstract
Developing efficient catalysts for syngas-based higher alcohol synthesis (HAS) remains a formidable research challenge. The chain growth and CO insertion requirements demand multicomponent materials, whose complex reaction dynamics and extensive chemical space defy catalyst design norms. We present an alternative strategy by integrating active learning into experimental workflows, exemplified via the FeCoCuZr catalyst family. Our data-aided framework streamlines navigation of the extensive composition and reaction condition space in 86 experiments, offering >90% reduction in environmental footprint and costs over traditional programs. It identifies the Fe65Co19Cu5Zr11 catalyst with optimized reaction conditions to attain higher alcohol productivities of 1.1 gHA h-1 gcat-1 under stable operation for 150 h on stream, a 5-fold improvement over typically reported yields. Characterization reveals catalytic properties linked to superior activities despite moderate higher alcohol selectivities. To better reflect catalyst demands, we devise multi-objective optimization to maximize higher alcohol productivity while minimizing undesired CO2 and CH4 selectivities. An intrinsic trade-off between these metrics is uncovered, identifying Pareto-optimal catalysts not readily discernible by human experts. Finally, based on feature-importance analysis, we formulate data-informed guidelines to develop performance-specific FeCoCuZr systems. This approach goes beyond existing HAS catalyst design strategies, is adaptable to broader catalytic transformations, and fosters laboratory sustainability.
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Affiliation(s)
- Manu Suvarna
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Tangsheng Zou
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Sok Ho Chong
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Yuzhen Ge
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Antonio J Martín
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland
| | - Javier Pérez-Ramírez
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
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10
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Pu Y, Wang Y, Wu G, Wu X, Lu Y, Yu Y, Chu N, He X, Li D, Zeng RJ, Jiang Y. Tandem Acidic CO 2 Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:7445-7456. [PMID: 38622030 DOI: 10.1021/acs.est.3c09291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The tandem application of CO2 electrolysis with syngas fermentation holds promise for achieving heightened production rates and improved product quality. However, the significant impact of syngas composition on mixed culture-based microbial chain elongation remains unclear. Additionally, effective methods for generating syngas with an adjustable composition from acidic CO2 electrolysis are currently lacking. This study successfully demonstrated the production of medium-chain fatty acids from CO2 through tandem acidic electrolysis with syngas fermentation. CO could serve as the sole energy source or as the electron donor (when cofed with acetate) for caproate generation. Furthermore, the results of gas diffusion electrode structure engineering highlighted that the use of carbon black, either alone or in combination with graphite, enabled consistent syngas generation with an adjustable composition from acidic CO2 electrolysis (pH 1). The carbon black layer significantly improved the CO selectivity, increasing from 0% to 43.5% (0.05 M K+) and further to 92.4% (0.5 M K+). This enhancement in performance was attributed to the promotion of K+ accumulation, stabilizing catalytically active sites, rather than creating a localized alkaline environment for CO2-to-CO conversion. This research contributes to the advancement of hybrid technology for sustainable CO2 reduction and chemical production.
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Affiliation(s)
- Ying Pu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yue Wang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Gaoying Wu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaobing Wu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yilin Lu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601 China
| | - Yangyang Yu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601 China
| | - Na Chu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohong He
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Daping Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Raymond Jianxiong Zeng
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yong Jiang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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11
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Wei F, Zhuang L. Unsupervised machine learning reveals eigen reactivity of metal surfaces. Sci Bull (Beijing) 2024; 69:756-762. [PMID: 38184386 DOI: 10.1016/j.scib.2023.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/31/2023] [Accepted: 11/27/2023] [Indexed: 01/08/2024]
Abstract
The reactivity of metal surfaces is a cornerstone concept in chemistry, as metals have long been used as catalysts to accelerate chemical reactions. Although fundamentally important, the reactivity of metal surfaces has hitherto not been explicitly defined. For example, in order to compare the activity of two metal surfaces, a particular probe adsorbate, such as O, H, or CO, has to be specified, as comparisons may vary from probe to probe. Here we report that the metal surfaces actually have their own intrinsic/eigen reactivity, independent of any probe adsorbate. By employing unsupervised machine learning algorithms, specifically, principal component analysis (PCA), two dominant eigenvectors emerged from the binding strength dataset formed by 10 commonly used probes on 48 typical metal surfaces. According to their chemical characteristics revealed by vector decomposition, these two eigenvectors can be defined as the covalent reactivity and the ionic reactivity, respectively. Whereas the ionic reactivity turns out to be related to the work function of the metal surface, the covalent reactivity cannot be indexed by simple physical properties, but appears to be roughly connected with the valence-electron number normalized density of states at the Fermi level. Our findings expose that the metal surface reactivity is essentially a two-dimensional vector rather than a scalar, opening new horizons for understanding interactions at the metal surface.
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Affiliation(s)
- Fengyuan Wei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lin Zhuang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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12
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Wang T, Zhang Z, Jiang S, Yan W, Li S, Zhuang J, Xie H, Li G, Jiang L. Spectroscopic characterization of carbon monoxide activation by neutral chromium carbides. Phys Chem Chem Phys 2024; 26:5962-5968. [PMID: 38293768 DOI: 10.1039/d4cp00011k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Spectroscopic characterization of carbon monoxide activation by neutral metal carbides is of essential importance for understanding the structure-reactivity relationships of catalytic sites, but has been proven to be very challenging owing to the difficulty in size selection. Here, we report a size-specific infrared-vacuum ultraviolet spectroscopic study of the reactions between carbon monoxide with neutral chromium carbides. Quantum chemical calculations were carried out to identify the low-lying structures and to interpret the experimental features. The results reveal that the most stable structure of CrC3(CO)2 consists of a CCO ketenylidene unit and that of CrC4(CO)2 has a semi-bridging CO with a very low CO stretching vibrational frequency at 1821 cm-1. The electron structure analyses show that this semi-bridging CO is highly activated through the delocalized Cr-C-C three-center two-electron (3c-2e) interaction between the antibonding orbitals of CO and the metal carbide skeleton. The formation of these metal carbide carbonyls is found to be both thermodynamically exothermic and kinetically facile in the gas phase. The present findings have important implications for the mechanical understanding of the catalytic processes with isolated metal atoms/clusters dispersed on supports.
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Affiliation(s)
- Tiantong Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhaoyan Zhang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuai Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenhui Yan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shangdong Li
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianxing Zhuang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Xie
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Gang Li
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Ling Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- Hefei National Laboratory, Hefei 230088, China
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13
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Ma Y, Lang J. A thorough mechanistic study of ethanol, acetaldehyde, and ethylene adsorption on Cu-MOR via DFT analysis. Phys Chem Chem Phys 2024; 26:4845-4854. [PMID: 38170914 DOI: 10.1039/d3cp05314h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A comprehensive study combining the density functional theory (DFT) and ab initio thermodynamic analysis was conducted to unravel the active sites and adsorption mechanisms of ethanol, acetaldehyde, and ethylene on various copper-modified mordenite (Cu-MOR) configurations, including Cu3/MOR, Cu3O3/MOR, and Cu6/MOR. This research involved an exhaustive exploration of structural and formation energies, revealing that the formation energies of these structures are temperature-dependent. Despite all three structures thermodynamically accommodating ethanol adsorption, their respective adsorption mechanisms differ significantly. In Cu3/MOR, weak van der Waals interactions predominate, while strong Cu-OOH interactions in Cu6/MOR facilitate ethanol dehydration. Conversely, Cu3O3/MOR exhibits pronounced Cu3O3-HOH interactions that favor ethanol dehydrogenation. Notably, Cu3O3/MOR displays robust ethylene adsorption, which enhances the potential for further ethylene activation. In-depth Bader charge and density of states analyses underscore the varying strengths and electronic characteristics of these interactions. This research provides a theoretical foundation for the design of highly efficient Cu-MOR catalysts tailored for the selective conversion of ethanol.
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Affiliation(s)
- Yuli Ma
- Institute of Marine Equipment, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Junyu Lang
- School of Physical Science and Technology, ShanghaiTech University, 393 Huaxia Middle Road, Shanghai 201210, China.
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14
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Liu S, Han S, Li Y, Shen W. Fabrication of a PdCu@SiO 2@Cu core-shell-satellite catalyst for the selective hydrogenation of acetylene. Dalton Trans 2023; 53:206-214. [PMID: 38032071 DOI: 10.1039/d3dt03170e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Pd25Cu75@SiO2 core-shell and PdCu@SiO2@Cu core-shell-satellite architectures were fabricated by silica-coating of Pd25Cu75 colloids in a reverse microemulsion. Hydrolysis of tetraethylorthosilicate in the reverse microemulsion containing hydrazine and ammonia yielded a core-shell structure, while the use of ammonia only, instead of a mixture of hydrazine and ammonia, formed a core-shell-satellite structure. The ammonia-leached copper species migrated onto the developing silica shell and formed smaller Cu clusters. Air-calcination at 673 K followed by H2-reduction at 773 K of the as-synthesized samples removed the organic surfactants and generated the permeable porous silica shells. The core-shell catalyst consisted of a metal core (8.5 nm) and a silica shell (7.8 nm), while the core-shell-satellite catalyst was composed by a metal core (7.0 nm), a silica shell (8.0 nm), and satellite Cu clusters (1.4 nm) on the silica shell. When used to catalyze the selective hydrogenation of acetylene to ethylene, the core-shell-satellite catalyst showed substantially enhanced activity and stability because of the synergetic catalysis between the metal core and the surrounding Cu clusters.
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Affiliation(s)
- Shuang Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Shaobo Han
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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15
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Zhang D, Li K, Chen J, Sun C, Li Z, Lei J, Ma Q, Zhang P, Liu Y, Yang L. Improved catalytic performance in gas-phase dimethyl ether carbonylation over facile NH 4F etched ferrierite. RSC Adv 2023; 13:35379-35390. [PMID: 38058555 PMCID: PMC10696424 DOI: 10.1039/d3ra07084k] [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: 10/18/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023] Open
Abstract
Gas-phase dimethyl ether (DME) carbonylation to methyl acetate (MA) initiates a promising route for producing ethanol from syngas. Ferrierite (FER, ZSM-35) has received considerable attention as it displays excellent stability in the carbonylation reaction and its modification strategy is to improve its catalytic activity on the premise of maintaining its stability as much as possible. However, conventional post-treatment methods such as dealumination and desilication usually selectively remove framework Al or Si atoms, ultimately altering the intrinsic composition, crystallinity, and acidity of zeolites inevitably. In this study, we successfully prepared a series of hierarchical ZSM-35 materials through post-treatment with NH4F etching, which dissolved framework Al and Si at similar rates and preferentially attacked the defective sites. Interestingly, the produced pore systems effectively penetrated the [100] plane, offering elevated access to both the 8-membered ring (8-MR) and 10-membered ring (10-MR) channels. The physicochemical and acid properties of the pristine and NH4F etched ZSM-35 samples were comprehensively characterized using various techniques, including XRD, XRF, FESEM, HRTEM, Nitrogen adsorption-desorption, NH3-TPD, Py-IR, 27Al MAS NMR, and 29Si MAS NMR. Under moderate treatment conditions, the intrinsic microporous structure, acid properties, and crystallinity of zeolite were retained, leading to superior catalytic activity and stability with respect to the pristine sample. Nonetheless, severe NH4F etching disrupted the crystalline framework and created additional defective sites, bringing about faster deposition of coke precursors on the interior Brønsted acid sites (BAS) and decreased catalytic performance. This technique provides a novel and efficient method to slightly enhance the micropore and mesopore volume of industrially pertinent zeolites through a straightforward post-treatment, thus elevating the catalytic performance of these zeolites.
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Affiliation(s)
- Dexin Zhang
- College of Chemical Engineering and Environment, China University of Petroleum Beijing 102249 China
- Luoyang R & D Center of Technologies of Sinopec Engineering (Group) Co., Ltd. Luoyang 471003 China
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Kang Li
- Luoyang R & D Center of Technologies of Sinopec Engineering (Group) Co., Ltd. Luoyang 471003 China
| | - Junli Chen
- College of Chemical Engineering and Environment, China University of Petroleum Beijing 102249 China
| | - Changyu Sun
- College of Chemical Engineering and Environment, China University of Petroleum Beijing 102249 China
| | - Zhi Li
- Luoyang R & D Center of Technologies of Sinopec Engineering (Group) Co., Ltd. Luoyang 471003 China
| | - Jie Lei
- Luoyang R & D Center of Technologies of Sinopec Engineering (Group) Co., Ltd. Luoyang 471003 China
| | - Qinlan Ma
- College of Chemical Engineering and Environment, China University of Petroleum Beijing 102249 China
| | - Pan Zhang
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Yong Liu
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
| | - Lin Yang
- School of Chemical Engineering, Sichuan University Chengdu 610065 China
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16
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Chen Y, Xia M, Zhou C, Zhang Y, Zhou C, Xu F, Feng B, Wang X, Yang L, Hu Z, Wu Q. Hierarchical Dual Single-Atom Catalysts with Coupled CoN 4 and NiN 4 Moieties for Industrial-Level CO 2 Electroreduction to Syngas. ACS NANO 2023; 17:22095-22105. [PMID: 37916602 DOI: 10.1021/acsnano.3c09102] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Renewable-driven electrochemical CO2 reduction reaction (CO2RR) to syngas is an encouraging alternative strategy to traditional fossil fuel-based syngas production, and the development of industrial-level electrocatalysts is vital. Herein, based on theoretical optimization of metal species, hierarchical CoxNi1-x-N-C dual single-atom catalyst (DSAC) with individual NiN4 (CO preferential) and CoN4 (H2 preferential) moieties was constructed by a two-step pyrolysis route. The Co0.5Ni0.5-N-C exhibits a stable CO Faradaic efficiency of 50 ± 5% and an industrial-level current density of 101-365 mA cm-2 in an ultrawide potential window of -0.5 to -1.1 V. The CO/H2 ratio of syngas can be conveniently tuned by regulating the Co/Ni ratio. The coupled effect of NiN4 and CoN4 moieties under a local high-pH microenvironment is responsible for the regulation of the CO/H2 selectivity and yield for the CoxNi1-x-N-C catalyst, which is not present in the mixed Co-N-C and Ni-N-C catalyst. This study provides a promising DSAC strategy for achieving industrial-level syngas production via CO2RR.
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Affiliation(s)
- Yiqun Chen
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Minqi Xia
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Cao Zhou
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yan Zhang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Changkai Zhou
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Fengfei Xu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Biao Feng
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xizhang Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Lijun Yang
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zheng Hu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qiang Wu
- Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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17
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Ge Y, Zou T, Martín AJ, Pérez-Ramírez J. ZrO 2-Promoted Cu-Co, Cu-Fe and Co-Fe Catalysts for Higher Alcohol Synthesis. ACS Catal 2023; 13:9946-9959. [PMID: 37560190 PMCID: PMC10407844 DOI: 10.1021/acscatal.3c02534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/30/2023] [Indexed: 08/11/2023]
Abstract
The development of efficient catalysts for the direct synthesis of higher alcohols (HA) via CO hydrogenation has remained a prominent research challenge. While modified Fischer-Tropsch synthesis (m-FTS) systems hold great potential, they often retain limited active site density under operating conditions for industrially relevant performance. Aimed at improving existing catalyst architectures, this study investigates the impact of highly dispersed metal oxides of Co-Cu, Cu-Fe, and Co-Fe m-FTS systems and demonstrates the viability of ZrO2 as a general promoter in the direct synthesis of HA from syngas. A volcano-like composition-performance relationship, in which 5-10 mol % ZrO2 resulted in maximal HA productivity, governs all catalyst families. The promotional effect resulted in a 2.5-fold increase in HA productivity for the optimized Cu1Co4@ZrO2-5 catalyst (Cu:Co = 1:4, 5 mol % ZrO2) compared to its ZrO2-free counterpart and placed Co1Fe4@ZrO2-10 among the most productive systems (345 mgHA h-1 gcat-1) reported in this category under comparable operating conditions, with stable performance for at least 300 h. ZrO2 assumes an amorphous and defective nature on the catalysts, leading to enhanced H2 and CO activation, facilitated formation of metallic and carbide phases, and structural stabilization.
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Affiliation(s)
- Yuzhen Ge
- Institute of Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Tangsheng Zou
- Institute of Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Antonio J. Martín
- Institute of Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Javier Pérez-Ramírez
- Institute of Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
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18
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Wu Y, Song P, Li N, Jiang Y, Liu Y. Molybdenum tailored Co0/Co2+ active pairs on a perovskite-type oxide for direct ethanol synthesis from syngas. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2023.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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19
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Insights into the Fischer–Tropsch mechanism on χ-Fe5C2(510) based on the hydrogen coverage effect. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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20
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Suvarna M, Preikschas P, Pérez-Ramírez J. Identifying Descriptors for Promoted Rhodium-Based Catalysts for Higher Alcohol Synthesis via Machine Learning. ACS Catal 2022; 12:15373-15385. [PMID: 36570082 PMCID: PMC9765739 DOI: 10.1021/acscatal.2c04349] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/28/2022] [Indexed: 12/05/2022]
Abstract
Rhodium-based catalysts offer remarkable selectivities toward higher alcohols, specifically ethanol, via syngas conversion. However, the addition of metal promoters is required to increase reactivity, augmenting the complexity of the system. Herein, we present an interpretable machine learning (ML) approach to predict and rationalize the performance of Rh-Mn-P/SiO2 catalysts (P = 19 promoters) using the open-source dataset on Rh-catalyzed higher alcohol synthesis (HAS) from Pacific Northwest National Laboratory (PNNL). A random forest model trained on this dataset comprising 19 alkali, transition, post-transition metals, and metalloid promoters, using catalytic descriptors and reaction conditions, predicts the higher alcohols space-time yield (STYHA) with an accuracy of R 2 = 0.76. The promoter's cohesive energy and alloy formation energy with Rh are revealed as significant descriptors during posterior feature-importance analysis. Their interplay is captured as a dimensionless property, coined promoter affinity index (PAI), which exhibits volcano correlations for space-time yield. Based on this descriptor, we develop guidelines for the rational selection of promoters in designing improved Rh-Mn-P/SiO2 catalysts. This study highlights ML as a tool for computational screening and performance prediction of unseen catalysts and simultaneously draws insights into the property-performance relations of complex catalytic systems.
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Affiliation(s)
- Manu Suvarna
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093Zurich, Switzerland
| | - Phil Preikschas
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093Zurich, Switzerland
| | - Javier Pérez-Ramírez
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093Zurich, Switzerland
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21
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Song L, He Y, Zhou C, Shu G, Ma K, Yue H. Highly selective hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol over an amino-assisted Ru-based catalyst. Chem Commun (Camb) 2022; 58:11657-11660. [PMID: 36164825 DOI: 10.1039/d2cc03346a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ru/NH2-MCM-41 catalyst was prepared via a coordination-assisted strategy for chemoselective hydrogenation of dimethyl oxalate with a high selectivity of methyl glycolate (ca. 100%) and ethylene glycol (>90%) at reaction temperatures of 343 K and 433 K, respectively. The amino groups help to anchor and form stable electron-rich Ru active sites, which accounts for the excellent CO bond activation and hydrogenation selectivity.
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Affiliation(s)
- Lei Song
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Yan He
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Changan Zhou
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Guoqiang Shu
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Kui Ma
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Hairong Yue
- Multi-phases Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China. .,Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
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