1
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Parthiban J, Awasthi MK, Kharde TA, Kalita K, Singh SK. Recent progress in molecular transition metal catalysts for hydrogen production from methanol and formaldehyde. Dalton Trans 2024; 53:4363-4389. [PMID: 38349644 DOI: 10.1039/d3dt03668e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Hydrogen is considered as a potential alternative and sustainable energy carrier, but its safe storage and transportation are still challenging due to its low volumetric energy density. Notably, C1-based substrates, methanol and formaldehyde, containing high hydrogen contents of 12.5 wt% and 6.7 wt%, respectively, can release hydrogen on demand in the presence of a suitable catalyst. Advantageously, both methanol and aqueous formaldehyde are liquid at room temperature, and hence can be stored and transported considerably more safely than hydrogen gas. Moreover, these C1-based substrates can be produced from biomass waste and can also be regenerated from CO2, a greenhouse gas. In this review, the recent progress in hydrogen production from methanol and formaldehyde over noble to non-noble metal complex-based molecular transition metal catalysts is extensively reviewed. This review also focuses on the critical role of the structure-activity relationship of the catalyst in the dehydrogenation pathway.
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Affiliation(s)
- Jayashree Parthiban
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore 453552, Madhya Pradesh, India.
| | - Mahendra K Awasthi
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore 453552, Madhya Pradesh, India.
| | - Tushar A Kharde
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore 453552, Madhya Pradesh, India.
| | - Khanindra Kalita
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore 453552, Madhya Pradesh, India.
| | - Sanjay Kumar Singh
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore 453552, Madhya Pradesh, India.
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2
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Stahl B, Bredow T. Exploiting phase transitions in catalysis: reaction ofCO2andH2on dopedVO2-polymorphs. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:145402. [PMID: 38157554 DOI: 10.1088/1361-648x/ad199d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
VO2is well known for its reversible transition between two phases with tetragonal rutile and monoclinic structure. In a previous theoretical study (Stahl and Bredow 2022ChemPhysChem23e202200131) we showed that the adsorption energy of CO is different on surfaces of the two Mo-stabilized polymorphs. This can be exploited to promote catalytic reactions by removing CO from the catalyst surface. As proof-of-principle, we investigated the hydrogenation reaction ofCO2. For this purpose, the adsorption energies ofCO2and possible intermediates and productsH2O, HCOOH,H2COand CO were calculated. Significant differences were found for the reaction energies of the hydrogenation ofCO2to formic acid and formaldehyde on the two polymorphs. This shows that it is in principle possible to alter the reaction thermodynamics by applying reaction conditions which stabilize a particular polymorph. In order to investigate the influence of the polymorph on kinetic properties, the reactions barriers of a step-wise reaction ofCO2+2H2→H2CO+H2Owas calculated using the nudged elastic band method.VO2was found to reduce the reaction barriers compared to the gas phase. Additionally, the minimum energy path of the bulk phase transition of undopedVO2was calculated using the distinguished reaction coordinate method. A catalytic cycle exploiting the phase transition is proposed based on the theoretical results.
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Affiliation(s)
- Berenike Stahl
- Mulliken Center for Theoretical Chemistry, Clausius-Institute for Physical and Theoretical Chemistry, University of Bonn, Beringstr. 4, D-53115 Bonn, Germany
| | - Thomas Bredow
- Mulliken Center for Theoretical Chemistry, Clausius-Institute for Physical and Theoretical Chemistry, University of Bonn, Beringstr. 4, D-53115 Bonn, Germany
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3
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Geng L, Zhang M, Zhang Z, Li Y. Production of carbon monoxide and hydrogen from methanol using a ruthenium pincer complex: a DFT study. Dalton Trans 2023; 52:13653-13661. [PMID: 37702003 DOI: 10.1039/d3dt01912h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
To understand the mechanism of the dehydrogenation of methanol to CO and H2 catalyzed by a ruthenium pincer complex, a density functional theory (DFT) study has been conducted on two different cycles which differ in the substances entering the cycle (methanol (cycle 1) versus methoxymethanol (cycle 2)). Our calculated results show that both cycles consist of three stages: dehydrogenation of alcohol to aldehyde (stage I); hydrogen formation (stage II); and decarbonylation with the regeneration of the catalyst (stage III). The energy barriers of the rate-determining steps for cycles 1 and 2 are 49.6 and 28.5 kcal mol-1, respectively. Thus cycle 2 is more energetically feasible. For stage III of cycle 2, our results did not support the mechanism proposed in the experiment (CO release occurs prior to decarbonylation). Instead, we suggested and examined an alternative pathway, that is, decarbonylation occurs prior to CO release. The mechanistic insights gained in the present paper could be beneficial for further designing of these kinds of reactions.
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Affiliation(s)
- Lina Geng
- School of Chemical Engineering, University of Science and Technology Liaoning, Qianshan Road 185, Anshan 114051, China.
| | - Mingchao Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Qianshan Road 185, Anshan 114051, China.
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Qianshan Road 185, Anshan 114051, China.
| | - Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Qianshan Road 185, Anshan 114051, China.
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4
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Head M, Joseph BT, Keith JM, Chianese AR. The Mechanism of Markovnikov-Selective Epoxide Hydrogenolysis Catalyzed by Ruthenium PNN and PNP Pincer Complexes. Organometallics 2023; 42:347-356. [PMID: 36937786 PMCID: PMC10015984 DOI: 10.1021/acs.organomet.2c00503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Indexed: 03/02/2023]
Abstract
The homogeneous catalysis of epoxide hydrogenolysis to give alcohols has recently received significant attention. Catalyst systems have been developed for the selective formation of either the Markovnikov (branched) or anti-Markovnikov (linear) alcohol product. Thus far, the reported catalysts exhibiting Markovnikov selectivity all feature the potential for Noyori/Shvo-type bifunctional catalysis, with either a RuH/NH or FeH/OH core structure. The proposed mechanisms of epoxide ring-opening have involved cooperative C-O bond hydrogenolysis involving the metal hydride and the acidic pendant group on the ligand, in analogy to the well-documented mechanism of polar double-bond hydrogenation exhibited by catalysts of this type. In this work, we present a combined computational/experimental study of the mechanism of epoxide hydrogenolysis catalyzed by Noyori-type PNP and PNN complexes of ruthenium. We find that, at least for these ruthenium systems, the previously proposed bifunctional pathway for epoxide ring-opening is energetically inaccessible; instead, the ring-opening proceeds through opposite-side nucleophilic attack of the ruthenium hydride on the epoxide carbon, without the involvement of the ligand N-H group. For both catalyst systems, the rate law and overall barrier predicted by density functional theory (DFT) are consistent with the results from kinetic studies.
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5
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Theoretical Prediction of the Catalytic Efficiency of Non-metalated Pincer-like Phosphorus Compounds for the Hydrogenation of Carbon-monoxide with Ammonia-Borane. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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6
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Zhu Q, Zhang S, Ma J, Zhu J, Li S, Zeng G. Catalytic Mechanisms of Transfer Hydrogenation of Azobenzene with Ammonia Borane by Pincer Bismuth Complex: Crucial Role of C=N Functional Group on the Pincer Ligand. Chem Asian J 2023; 18:e202201069. [PMID: 36398781 DOI: 10.1002/asia.202201069] [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: 10/19/2022] [Revised: 11/17/2022] [Indexed: 11/19/2022]
Abstract
Transfer hydrogenation of azobenzene with ammonia borane mediated by pincer bismuth complex 1 was systematically investigated through density functional theory calculations. An unusual metal-ligand cooperation mechanism was disclosed, in which the saturation/regeneration of the C=N functional group on the pincer ligand plays an essential role. The reaction is initiated by the hydrogenation of the C=N bond (saturation) with ammonia borane to afford 3CN , which is the rate-determining step with Gibbs energy barrier (ΔG≠ ) and Gibbs reaction energy (ΔG) of 25.6 and -7.3 kcal/mol, respectively. 3CN is then converted to a Bi-H intermediate through a water-bridged pathway, which is followed up with the transfer hydrogenation of azobenzene to produce the final product N,N'-diphenylhydrazine and regenerate the catalyst. Finally, the catalyst could be improved by substituting the phenyl group for the tert-butyl group on the pincer ligand, where the ΔG≠ value (rate-determining step) decreases to 24.0 kcal/mol.
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Affiliation(s)
- Qin Zhu
- Kuang Yaming Honors School, Nanjing University, Nanjing, 210093, P. R. China.,School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing, 210093, P. R. China.,State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Fujian Provincial Key Laboratory of Theoretical Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Shuoqi Zhang
- Kuang Yaming Honors School, Nanjing University, Nanjing, 210093, P. R. China
| | - Jing Ma
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing, 210093, P. R. China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Fujian Provincial Key Laboratory of Theoretical Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Shuhua Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing, 210093, P. R. China
| | - Guixiang Zeng
- Kuang Yaming Honors School, Nanjing University, Nanjing, 210093, P. R. China
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7
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Si F, Liu J, Zhang Y, Zhao B, Liang Y, Wu X, Kang X, Yang X, Zhang J, Fu XZ, Luo JL. Surface Spin Enhanced High Stable NiCo 2 S 4 for Energy-Saving Production of H 2 from Water/Methanol Coelectrolysis at High Current Density. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205257. [PMID: 36344428 DOI: 10.1002/smll.202205257] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Nickel based materials are promising electrocatalysts to produce hydrogen from water in alkaline media. However, the stability is of great challenge, limiting its practical material functions. Herein, a new technique for electro-deposition flower-like NiCo2 S4 nanosheets on carbon-cloth (CC@NiCo2 S4 ) is proposed for energy-saving production of H2 from water/methanol coelectrolysis at high current density by constructing array architectures and regulating surface magnetism. The optimized and fine-tuned magnetism on the surface of the electrochemical in situ grown CC@NiCo2 S4 nanosheet array result in (0 1 -1) surface universally exposed, high catalytic activity for methanol electrooxidation, and long-term stability at high current density. X-ray photoelectron spectroscopy in combination of density functional theory calculations confirm the valence electron states and spin of d electrons for the surface of NiCo2 S4 , which enhance the surface stability of catalysts. This technology may be utilized to alter the surface magnetism and increase the stability of Ni-based electrocatalytic materials in general.
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Affiliation(s)
- Fengzhan Si
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jianwen Liu
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yan Zhang
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Bin Zhao
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yue Liang
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xuexian Wu
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xiaomin Kang
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xiaoqiang Yang
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jiujun Zhang
- Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, 200444, China
| | - Xian-Zhu Fu
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jing-Li Luo
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
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8
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Exploring the conversion mechanism of formaldehyde to CO2 and H2 catalyzed by bifunctional ruthenium catalysts: A DFT study. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Yan J, Zhou Y, Liu X, Li DS. Mechanistic insights into H 2 evolution via water splitting at the expense of B 2(OH) 4: a theoretical study. Phys Chem Chem Phys 2022; 24:8182-8188. [PMID: 35343980 DOI: 10.1039/d1cp05277b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
H2 has been comprehensively deemed a promising potential candidate to replace traditional fossil fuel-based energy. Typically, the hydrolysis of most hydrogen-rich boron hydrides (e.g. NaBH4, NH3BH3 and Me2NHBH3) catalyzed by nanomaterials generates H2 with only one H atom supplied by water and the other one by a hydrogen-rich boron hydride. Interestingly, both H atoms of produced H2 are provided by water upon hydrolysis of B2(OH)4. Herein, the catalytic mechanisms of H2 evolution upon water splitting at the expense of B2(OH)4 in its hydrolysis reactions catalyzed by acid, base or metal nanoparticles have been investigated by density functional theory (DFT) calculations. By computational studies, the mechanisms of catalysis by base and metal nanoparticles are basically the same as those speculated from our previous experiments. The previously proposed acid catalytic mechanism has been overturned, however. This study not only provides important insights into the catalytic mechanism for water splitting at the expense of B2(OH)4, but also opens up an exciting opportunity to use water to store H2.
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Affiliation(s)
- Jiaying Yan
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002, China.
| | - Yuhang Zhou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002, China.
| | - Xiang Liu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002, China.
| | - Dong-Sheng Li
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002, China.
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10
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Wang Q, Lan J, Liang R, Xia Y, Qin L, Chung LW, Zheng Z. New Tricks for an Old Dog: Grubbs Catalysts Enable Efficient Hydrogen Production from Aqueous-Phase Methanol Reforming. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05369] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qian Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jialing Lan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Rong Liang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yihao Xia
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lei Qin
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lung Wa Chung
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiping Zheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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11
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Kumar A, Daw P, Milstein D. Homogeneous Catalysis for Sustainable Energy: Hydrogen and Methanol Economies, Fuels from Biomass, and Related Topics. Chem Rev 2022; 122:385-441. [PMID: 34727501 PMCID: PMC8759071 DOI: 10.1021/acs.chemrev.1c00412] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Indexed: 02/08/2023]
Abstract
As the world pledges to significantly cut carbon emissions, the demand for sustainable and clean energy has now become more important than ever. This includes both production and storage of energy carriers, a majority of which involve catalytic reactions. This article reviews recent developments of homogeneous catalysts in emerging applications of sustainable energy. The most important focus has been on hydrogen storage as several efficient homogeneous catalysts have been reported recently for (de)hydrogenative transformations promising to the hydrogen economy. Another direction that has been extensively covered in this review is that of the methanol economy. Homogeneous catalysts investigated for the production of methanol from CO2, CO, and HCOOH have been discussed in detail. Moreover, catalytic processes for the production of conventional fuels (higher alkanes such as diesel, wax) from biomass or lower alkanes have also been discussed. A section has also been dedicated to the production of ethylene glycol from CO and H2 using homogeneous catalysts. Well-defined transition metal complexes, in particular, pincer complexes, have been discussed in more detail due to their high activity and well-studied mechanisms.
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Affiliation(s)
- Amit Kumar
- School
of Chemistry, University of St. Andrews, North Haugh, Fife, U.K., KY16 9ST
| | - Prosenjit Daw
- Department
of Chemical Sciences, Indian Institute of
Science Education and Research Berhampur, Govt. ITI (transit Campus), Berhampur 760010, India
| | - David Milstein
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
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12
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Chirdon DN, Kelley SP, Hazari N, Bernskoetter WH. Comparative Coordination Chemistry of PNP and SNS Pincer Ruthenium Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danielle N. Chirdon
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Steven P. Kelley
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Nilay Hazari
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Wesley H. Bernskoetter
- Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
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13
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Norjmaa G, Ujaque G, Lledós A. Beyond Continuum Solvent Models in Computational Homogeneous Catalysis. Top Catal 2021. [DOI: 10.1007/s11244-021-01520-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AbstractIn homogeneous catalysis solvent is an inherent part of the catalytic system. As such, it must be considered in the computational modeling. The most common approach to include solvent effects in quantum mechanical calculations is by means of continuum solvent models. When they are properly used, average solvent effects are efficiently captured, mainly those related with solvent polarity. However, neglecting atomistic description of solvent molecules has its limitations, and continuum solvent models all alone cannot be applied to whatever situation. In many cases, inclusion of explicit solvent molecules in the quantum mechanical description of the system is mandatory. The purpose of this article is to highlight through selected examples what are the reasons that urge to go beyond the continuum models to the employment of micro-solvated (cluster-continuum) of fully explicit solvent models, in this way setting the limits of continuum solvent models in computational homogeneous catalysis. These examples showcase that inclusion of solvent molecules in the calculation not only can improve the description of already known mechanisms but can yield new mechanistic views of a reaction. With the aim of systematizing the use of explicit solvent models, after discussing the success and limitations of continuum solvent models, issues related with solvent coordination and solvent dynamics, solvent effects in reactions involving small, charged species, as well as reactions in protic solvents and the role of solvent as reagent itself are successively considered.
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14
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Zhao Y, Zhang L, Pu M, Lei M. A phosphine-free Mn(I)-NNS catalyst for asymmetric transfer hydrogenation of acetophenone: a theoretical prediction. Dalton Trans 2021; 50:14738-14744. [PMID: 34590102 DOI: 10.1039/d1dt02410h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The density functional theory (DFT) method was employed to investigate the reaction mechanism of the hydrogen activation and asymmetric transfer hydrogenation (ATH) of acetophenone catalyzed by a well-defined phosphine-free Mn(I)-NNS complex. The calculation results indicate that the Mn-NNS complex has potential high catalytic hydrogenation activity. Meanwhile, the hydrogen transfer step of this reaction is proposed to be a concerted but asynchronous process, and the hydride transfer precedes proton transfer. This work also pointed out that the stereoselectivity of ATH catalyzed by the Mn(I)-NNS complex mainly originates from the noncovalent interaction between the substrate and the catalyst. Additionally, the catalytic activities of Mn-NNS complexes with different X ligands (X = CO, Cl, H, OMe, NCMe, CCMe, and CHCHMe) were compared, and the calculated total reaction energy barriers were all viable, which indicates that these Mn-NNS complexes show higher CO bond hydrogenation activity under mild conditions. This theoretical study predicts that the reactions catalyzed by complexes with H and NCMe ligands exhibit high stereoselectivity with enantiomeric excess (ee) values of 97% and 93%, respectively.
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Affiliation(s)
- Yaqi Zhao
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Lin Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
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15
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Garg N, Sarkar A, Sundararaju B. Recent developments on methanol as liquid organic hydrogen carrier in transfer hydrogenation reactions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213728] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Yang J, Pell AJ, Hedin N, Lyubartsev A. Computational insight into the hydrogenation of CO2 and carbamic acids to methanol by a ruthenium(II)-based catalyst: The role of amino (NH) ligand group. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Govindarajan N, Beks H, Meijer EJ. Variability of Ligand pKa during Homogeneously Catalyzed Aqueous Methanol Dehydrogenation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03907] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nitish Govindarajan
- Amsterdam Center for Multiscale Modeling and Van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
- Catalysis Theory Center, Department of Physics, Technical University of Denmark, 2800 Kongens, Lyngby, Denmark
| | - Hugo Beks
- Amsterdam Center for Multiscale Modeling and Van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Evert Jan Meijer
- Amsterdam Center for Multiscale Modeling and Van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
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18
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Clerc A, Marelli E, Adet N, Monot J, Martín-Vaca B, Bourissou D. Metal-ligand-Lewis acid multi-cooperative catalysis: a step forward in the Conia-ene reaction. Chem Sci 2020; 12:435-441. [PMID: 34163606 PMCID: PMC8178805 DOI: 10.1039/d0sc05036a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An original multi-cooperative catalytic approach was developed by combining metal–ligand cooperation and Lewis acid activation. The [(SCS)Pd]2 complex featuring a non-innocent indenediide-based ligand was found to be a very efficient and versatile catalyst for the Conia-ene reaction, when associated with Mg(OTf)2. The reaction operates at low catalytic loadings under mild conditions with HFIP as a co-solvent. It works with a variety of substrates, including those bearing internal alkynes. It displays complete 5-exo vs. 6-endo regio-selectivity. In addition, except for the highly congested tBu-substituent, the reaction occurs with high Z vs. E stereo-selectivity, making it synthetically useful and complementary to known catalysts. An original multi-cooperative catalytic approach was developed by combining metal–ligand cooperation and Lewis acid activation.![]()
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Affiliation(s)
- Arnaud Clerc
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Enrico Marelli
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Nicolas Adet
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Julien Monot
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Blanca Martín-Vaca
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse (UPS), CNRS 118 route de Narbonne F-31062 Toulouse France
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19
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Fanara PM, MacMillan SN, Lacy DC. Planar-Locked Ru-PNN Catalysts in 1-Phenylethanol Dehydrogenation. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00327] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paul M. Fanara
- Department of Chemistry, University at Buffalo, SUNY, Buffalo, New York 14260-3000, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - David C. Lacy
- Department of Chemistry, University at Buffalo, SUNY, Buffalo, New York 14260-3000, United States
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20
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Liu TT, Tang SY, Hu B, Liu P, Bi S, Jiang YY. Mechanism and Origin of Chemoselectivity of Ru-Catalyzed Cross-Coupling of Secondary Alcohols to β-Disubstituted Ketones. J Org Chem 2020; 85:12444-12455. [DOI: 10.1021/acs.joc.0c01671] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tian-Tian Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Shi-Ya Tang
- SINOPEC Research Institute of Safety Engineering, Qingdao 266000, People’s Republic of China
| | - Bing Hu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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21
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Abstract
Our planet urgently needs sustainable solutions to alleviate the anthropogenic global warming and climate change. Homogeneous catalysis has the potential to play a fundamental role in this process, providing novel, efficient, and at the same time eco-friendly routes for both chemicals and energy production. In particular, pincer-type ligation shows promising properties in terms of long-term stability and selectivity, as well as allowing for mild reaction conditions and low catalyst loading. Indeed, pincer complexes have been applied to a plethora of sustainable chemical processes, such as hydrogen release, CO2 capture and conversion, N2 fixation, and biomass valorization for the synthesis of high-value chemicals and fuels. In this work, we show the main advances of the last five years in the use of pincer transition metal complexes in key catalytic processes aiming for a more sustainable chemical and energy production.
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22
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Bai C, Wang H, Ning F, Fu J, Wei J, Lu G, Shen Y, Zhou X. Second Sphere Ligand Promoted Organoiridium Catalysts for Methanol Dehydrogenation under Mild Conditions. ChemCatChem 2020. [DOI: 10.1002/cctc.202000400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chuang Bai
- School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P.R. China
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Huihui Wang
- School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P.R. China
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Fandi Ning
- School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P.R. China
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Junhao Fu
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Jun Wei
- School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P.R. China
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Guanbin Lu
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
| | - Yangbin Shen
- Institute of Materials Science and Devices Suzhou University of Science and Technology Suzhou 215009 P.R. China
| | - Xiaochun Zhou
- School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P.R. China
- Division of Advanced Nanomaterials Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences (CAS) Suzhou 215123 P.R. China
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23
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Immobilization of a selective Ru-pincer complex for low temperature methanol reforming–Material and process improvements. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Govindarajan N, Meijer EJ. Elucidating cation effects in homogeneously catalyzed formic acid dehydrogenation. Faraday Discuss 2019; 220:404-413. [PMID: 31544196 DOI: 10.1039/c9fd00055k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we use density functional theory based molecular dynamics with an explicit description of methanol solvent to study the effect of cations on formic acid dehydrogenation catalyzed by a ruthenium PNP pincer complex (RuPNP). Formic acid dehydrogenation is a two step process that involves the reorientation of the formate moiety bound via its oxygen to a H bound intermediate, followed by the hydride transfer step to form CO2 and the hydrogenated catalyst. We find the reorientation step to proceed with a low barrier in methanol solvent and in the presence of a Li+ cation, while the hydride transfer is significantly hindered by the presence of cations (Li+ and K+). The cation seems to strongly stabilize the negatively charged formate moiety, hindering complete hydride transfer and resulting in a high barrier for this step. This study is a first step towards addressing the exact role of cations in formic acid dehydrogenation reactions.
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Affiliation(s)
- Nitish Govindarajan
- Van't Hoff Institute for Molecular Sciences, Amsterdam Center for Multiscale Modeling, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands.
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25
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Smith NE, Bernskoetter WH, Hazari N. The Role of Proton Shuttles in the Reversible Activation of Hydrogen via Metal-Ligand Cooperation. J Am Chem Soc 2019; 141:17350-17360. [PMID: 31617710 DOI: 10.1021/jacs.9b09062] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The reversible activation of H2 via a pathway involving metal-ligand cooperation (MLC) is proposed to be important in many transition metal catalyzed hydrogenation and dehydrogenation reactions. Nevertheless, there is a paucity of experimental information probing the mechanism of this transformation. Here, we present an in-depth kinetic study of the 1,2-addition of H2 via an MLC pathway to the widely used iron catalyst [(iPrPNP)FeH(CO)] (1) (iPrPNP = N(CH2CH2PiPr2)2-). We report one of the first experimental demonstrations of an enhancement in rate for the activation of H2 using protic additives, which operate as "proton shuttles". Our results indicate that proton shuttles need to be able to both simultaneously donate and accept a proton, and the best shuttles are molecules that are strong hydrogen bond donors but sufficiently weak acids to avoid deleterious protonation of the transition metal complex. Additionally, comparison of the rate of H2 activation via an MLC pathway between 1 and two widely used ruthenium catalysts enables more general conclusions about the role of the metal, ancillary ligand, and proton shuttles in H2 activation. The results of this study provide guidance about the design of catalysts and additives to promote H2 activation via an MLC pathway.
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Affiliation(s)
- Nicholas E Smith
- The Department of Chemistry , Yale University , P.O. Box 208107, New Haven , Connecticut 06520 , United States
| | - Wesley H Bernskoetter
- The Department of Chemistry , The University of Missouri , Columbia , Missouri 65211 , United States
| | - Nilay Hazari
- The Department of Chemistry , Yale University , P.O. Box 208107, New Haven , Connecticut 06520 , United States
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26
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Ash T, Debnath T, Das AK. Comprehensive Understanding of Bi‐functional Behavior of PNP‐Pincer Complexes Towards the Conversion of CO into Methanol and CO
2
: A DFT Approach. ChemistrySelect 2019. [DOI: 10.1002/slct.201901767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tamalika Ash
- School of Mathematical and Computational SciencesIndian Association for the Cultivation of Science, Jadavpur Kolkata- 700032 India
| | - Tanay Debnath
- School of Mathematical and Computational SciencesIndian Association for the Cultivation of Science, Jadavpur Kolkata- 700032 India
| | - Abhijit K. Das
- School of Mathematical and Computational SciencesIndian Association for the Cultivation of Science, Jadavpur Kolkata- 700032 India
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27
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Yue X, Li L, Li P, Luo C, Pu M, Yang Z, Lei M. A Computational Study on Iridium‐Catalyzed Production of Acetic Acid from Ethanol and Water Solution. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xin Yue
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Longfei Li
- College of Pharmaceutical ScienceHebei University Baoding Hebei 071002 China
| | - Pengjie Li
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Chenguang Luo
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Min Pu
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Zuoyin Yang
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of ChemistryBeijing University of Chemical Technology Beijing 100029 China
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28
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Agapova A, Alberico E, Kammer A, Junge H, Beller M. Catalytic Dehydrogenation of Formic Acid with Ruthenium‐PNP‐Pincer Complexes: Comparing N‐Methylated and NH‐Ligands. ChemCatChem 2019. [DOI: 10.1002/cctc.201801897] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anastasiya Agapova
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Elisabetta Alberico
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
- Istituto di Chimica BiomolecolareConsiglio Nazionale delle Ricerche tr. La Crucca 3 07100 Sassari Italy
| | - Anja Kammer
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Henrik Junge
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
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29
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Fan F, Zhao L, Hou H, Zhang Q. Insights into the CO Formation Mechanism during Steam Reforming of Dimethyl Ether over NiO/Cu-Based Catalyst. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b02628] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Feiyue Fan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Long Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Hong Hou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Qi Zhang
- Department of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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30
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DFT and AIMD prediction of a SNS manganese pincer complex for hydrogenation of acetophenone. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.10.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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31
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Shu S, Huang M, Jiang J, Qu LB, Liu Y, Ke Z. Catalyzed or non-catalyzed: chemoselectivity of Ru-catalyzed acceptorless dehydrogenative coupling of alcohols and amines via metal–ligand bond cooperation and (de)aromatization. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00243j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanistic origin of the chemoselectivity for Ru-catalyzed acceptorless coupling of amines and alcohols.
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Affiliation(s)
- Siwei Shu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Meijie Huang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Jingxing Jiang
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yan Liu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Zhuofeng Ke
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
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32
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Jiang YY, Li G, Yang D, Zhang Z, Zhu L, Fan X, Bi S. Mechanism of Cu-Catalyzed Aerobic C(CO)–CH3 Bond Cleavage: A Combined Computational and Experimental Study. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03993] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Guoqing Li
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Daoshan Yang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of China
| | - Zhaoshun Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Ling Zhu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Xia Fan
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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33
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Trincado M, Vogt M. CO2-based hydrogen storage – hydrogen liberation from methanol/water mixtures and from anhydrous methanol. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2017-0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
New strategies for the reforming of methanol under mild conditions on the basis of heterogeneous and molecular catalysts have raised the hopes and expectations on this fuel. This contribution will focus on the progress achieved in the production of hydrogen from aqueous and anhydrous methanol with molecular and heterogeneous catalysts. The report entails thermal approaches, as well as light-triggered dehydrogenation reactions. A comparison of the efficiency and mechanistic aspects will be made and principles of catalytic pathways operating in biological systems will be also addressed.
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34
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Liu Y, Yang Y, Zhu R, Liu C, Zhang D. The Dual Role of Gold(I) Complexes in Photosensitizer‐Free Visible‐Light‐Mediated Gold‐Catalyzed 1,2‐Difunctionalization of Alkynes: A DFT Study. Chemistry 2018; 24:14119-14126. [DOI: 10.1002/chem.201803075] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/19/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Yanhong Liu
- Key Lab of Colloid and Interface ChemistryMinistry of Education, Institute of Theoretical ChemistrySchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P.R. China
| | - Yiying Yang
- Key Lab of Colloid and Interface ChemistryMinistry of Education, Institute of Theoretical ChemistrySchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P.R. China
| | - Rongxiu Zhu
- Key Lab of Colloid and Interface ChemistryMinistry of Education, Institute of Theoretical ChemistrySchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P.R. China
| | - Chengbu Liu
- Key Lab of Colloid and Interface ChemistryMinistry of Education, Institute of Theoretical ChemistrySchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P.R. China
| | - Dongju Zhang
- Key Lab of Colloid and Interface ChemistryMinistry of Education, Institute of Theoretical ChemistrySchool of Chemistry and Chemical EngineeringShandong University Jinan 250100 P.R. China
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35
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Sinha V, Govindarajan N, de Bruin B, Meijer EJ. How Solvent Affects C-H Activation and Hydrogen Production Pathways in Homogeneous Ru-Catalyzed Methanol Dehydrogenation Reactions. ACS Catal 2018; 8:6908-6913. [PMID: 30101037 PMCID: PMC6080862 DOI: 10.1021/acscatal.8b01177] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/10/2018] [Indexed: 11/29/2022]
Abstract
Insights into the mechanism of the catalytic cycle for methanol dehydrogenation catalyzed by a highly active PNP pincer ruthenium complex in methanol solvent are presented, using DFT-based molecular dynamics with an explicit description of the solvent, as well as static DFT calculations using microsolvation models. In contrast to previous results, we find the amido moiety of the catalyst to be permanently protonated under catalytic conditions. Solvent molecules actively participate in crucial reaction steps and significantly affect the reaction barriers when compared to pure gas-phase models, which is a direct result of the enhanced solvent stabilization of methoxide anion intermediates. Further, the calculations reveal that this system does not operate via the commonly assumed Noyori-type outer-sphere metal-ligand cooperative pathway. Our results show the importance of incorporating a molecular description of the solvent to gain a deeper and accurate understanding of the reaction pathways, and stress on the need to involve explicit solvent molecules to model complex catalytic processes in a realistic manner.
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Affiliation(s)
- Vivek Sinha
- Homogenous, Supramolecular and Bio-Inspired Catalysis, Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Nitish Govindarajan
- Amsterdam Center for Multiscale Modeling and Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Bas de Bruin
- Homogenous, Supramolecular and Bio-Inspired Catalysis, Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Evert Jan Meijer
- Amsterdam Center for Multiscale Modeling and Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
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36
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Li L, Lei M, Liu L, Xie Y, Schaefer HF. Metal-Substrate Cooperation Mechanism for Dehydrogenative Amidation Catalyzed by a PNN-Ru Catalyst. Inorg Chem 2018; 57:8778-8787. [PMID: 30010329 DOI: 10.1021/acs.inorgchem.8b00563] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The pyridine-based PNN ruthenium pincer complex (PNN)Ru(CO)(H) can catalyze the well-known dehydrogenative amidation reaction, but the mechanism is not fully understood. In this work, we find there exists an alternative metal-substrate cooperation mechanism in this reaction system, which is more favorable than the aromatization-dearomatization mechanism. The possible reaction of the excess base t-BuO- with catalyst species (PNN)Ru(CO)(H) is studied, indicating t-BuO- is able to facilitate the ligand substitution and enhance catalytic activities. With the bifunctional Ru-N moiety, the imine-substituted species (PN)(imine)Ru(CO)(H) 5 could serve as an alternative catalytic species and efficiently facilitate some elementary steps such as the hydrogen transfer, hydrogen elimination, and C-N coupling. Meanwhile, the C-N coupling step proceeds via the split of aldehydic C-H bond across the Ru(II)-imine bond, which results in an amide bond directly. The hemiaminal is uninvolved in the C-N coupling process. Finally, the formation of linear peptides and cyclic dipeptides are unveiled by the newly proposed mechanism. The metal-substrate cooperation could widely exist in transition metal catalyst systems with a large influence on the reaction activity.
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Affiliation(s)
- Longfei Li
- Center for Computational Quantum Chemistry , University of Georgia , Athens , Georgia 30602 , United States
| | | | | | - Yaoming Xie
- Center for Computational Quantum Chemistry , University of Georgia , Athens , Georgia 30602 , United States
| | - Henry F Schaefer
- Center for Computational Quantum Chemistry , University of Georgia , Athens , Georgia 30602 , United States
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37
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Debnath T, Ash T, Ghosh A, Sarkar S, Das AK. Exploration of unprecedented catalytic dehydrogenation mechanism of methylamine-water mixture in presence of Ru-pincer complex: A systematic DFT study. J Catal 2018. [DOI: 10.1016/j.jcat.2018.04.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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38
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Advances in Homogeneous Catalysis for Low Temperature Methanol Reforming in the Context of the Methanol Economy. Top Catal 2018. [DOI: 10.1007/s11244-018-0963-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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39
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Shen Y, Zhan Y, Li S, Ning F, Du Y, Huang Y, He T, Zhou X. Methanol-Water Aqueous-Phase Reforming with the Assistance of Dehydrogenases at Near-Room Temperature. CHEMSUSCHEM 2018; 11:864-871. [PMID: 29327513 DOI: 10.1002/cssc.201702359] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Indexed: 06/07/2023]
Abstract
As an excellent hydrogen-storage medium, methanol has many advantages, such as high hydrogen content (12.6 wt %), low cost, and availability from biomass or photocatalysis. However, conventional methanol-water reforming usually proceeds at high temperatures. In this research, we successfully designed a new effective strategy to generate hydrogen from methanol at near-room temperature. The strategy involved two main processes: CH3 OH→HCOOH→H2 and NADH→HCOOH→H2 . The first process (CH3 OH→HCOOH→H2 ) was performed by an alcohol dehydrogenase (ADH), an aldehyde dehydrogenase (ALDH), and an Ir catalyst. The second procedure (NADH→HCOOH→H2 ) was performed by formate dehydrogenase (FDH) and the Ir catalyst. The Ir catalyst used was a previously reported polymer complex catalyst [Cp*IrCl2 (ppy); Cp*=pentamethylcyclopentadienyl, ppy=polypyrrole] with high catalytic activity for the decomposition of formic acid at room temperature and is compatible with enzymes, coenzymes, and poisoning chemicals. Our results revealed that the optimum hydrogen generation rate could reach up to 17.8 μmol h-1 gcat-1 under weak basic conditions at 30 °C. This will have high impact on hydrogen storage, production, and applications and should also provide new inspiration for hydrogen generation from methanol.
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Affiliation(s)
- Yangbin Shen
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Yulu Zhan
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Shuping Li
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Fandi Ning
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Ying Du
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Yunjie Huang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P.R. China
| | - Ting He
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
| | - Xiaochun Zhou
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P.R. China
- Key Laboratory of Nanodevices and Applications, Chinese Academy of Sciences, Suzhou, 215123, P.R. China
- CAS Key Laboratory for Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P.R. China
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40
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Wei Z, Junge K, Beller M, Jiao H. Exploring the activities of vanadium, niobium, and tantalum PNP pincer complexes in the hydrogenation of phenyl-substituted C N, C N, C C, C C, and C O functional groups. CR CHIM 2018. [DOI: 10.1016/j.crci.2017.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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41
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Wei Z, de Aguirre A, Junge K, Beller M, Jiao H. Exploring the mechanisms of aqueous methanol dehydrogenation catalyzed by defined PNP Mn and Re pincer complexes under base-free as well as strong base conditions. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00746b] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanisms of aqueous methanol dehydrogenation reaction catalyzed by defined Mn and Re pincer complexes under different conditions were computed.
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Affiliation(s)
- Zhihong Wei
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Adiran de Aguirre
- Institute of Chemical Research of Catalonia
- ICIQ
- The Barcelona Institute of Science and Technology
- Tarragona
- Spain
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
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42
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Filonenko GA, van Putten R, Hensen EJM, Pidko EA. Catalytic (de)hydrogenation promoted by non-precious metals – Co, Fe and Mn: recent advances in an emerging field. Chem Soc Rev 2018; 47:1459-1483. [DOI: 10.1039/c7cs00334j] [Citation(s) in RCA: 406] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This review is aimed at introducing the remarkable progress made in the last three years in the development of base metal catalysts for hydrogenations and dehydrogenative transformations.
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Affiliation(s)
- Georgy A. Filonenko
- Inorganic Materials Chemistry Group
- Schuit Institute of Catalysis
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Robbert van Putten
- Inorganic Materials Chemistry Group
- Schuit Institute of Catalysis
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Emiel J. M. Hensen
- Inorganic Materials Chemistry Group
- Schuit Institute of Catalysis
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Evgeny A. Pidko
- Department of Chemical Engineering
- Delft University of Technology
- 2629 HZ Delft
- The Netherlands
- ITMO University
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43
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Shen Y, Zhan Y, Li S, Ning F, Du Y, Huang Y, He T, Zhou X. Hydrogen generation from methanol at near-room temperature. Chem Sci 2017; 8:7498-7504. [PMID: 29163903 PMCID: PMC5676115 DOI: 10.1039/c7sc01778b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 09/06/2017] [Indexed: 11/21/2022] Open
Abstract
As a promising hydrogen storage medium methanol has many advantages such as a high hydrogen content (12.5 wt%) and low-cost. However, conventional methanol-water reforming methods usually require a high temperature (>200 °C). In this research, we successfully designed an effective strategy to fully convert methanol to hydrogen for at least 1900 min (∼32 h) at near-room temperature. The strategy involves two main procedures, which are CH3OH → HCOOH → H2 and CH3OH → NADH → H2. HCOOH and the reduced form of nicotinamide adenine dinucleotide (NADH) are simultaneously produced through the dehydrogenation of methanol by the cooperation of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH). Subsequently, HCOOH is converted to H2 by a new iridium polymer complex catalyst and an enzyme mimic is used to convert NADH to H2 and nicotinamide adenine dinucleotide (NAD+). NAD+ can then be reconverted to NADH by repeating the dehydrogenation of methanol. This strategy and the catalysts invented in this research can also be applied to hydrogen production from other small organic molecules (e.g. ethanol) or biomass (e.g. glucose), and thus will have a high impact on hydrogen storage and applications.
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Affiliation(s)
- Yangbin Shen
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yulu Zhan
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
| | - Shuping Li
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
| | - Fandi Ning
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
| | - Ying Du
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
| | - Yunjie Huang
- Faculty of Materials Science and Chemistry , China University of Geosciences , Wuhan 430074 , China
| | - Ting He
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
| | - Xiaochun Zhou
- Division of Advanced Nanomaterials , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China .
- Key Laboratory of Nanodevices and Applications , Suzhou Institute of Nano-tech and Nano-bionics , Chinese Academy of Sciences , Suzhou 215125 , China
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44
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Ge H, Chen X, Yang X. Hydrogenation of Carbon Dioxide to Methanol Catalyzed by Iron, Cobalt, and Manganese Cyclopentadienone Complexes: Mechanistic Insights and Computational Design. Chemistry 2017; 23:8850-8856. [DOI: 10.1002/chem.201701200] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Hongyu Ge
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; CAS Research/Education Center for Excellence in Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Xiangyang Chen
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; CAS Research/Education Center for Excellence in Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Xinzheng Yang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory for Structural Chemistry of Unstable and Stable Species; CAS Research/Education Center for Excellence in Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
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45
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Nguyen DH, Trivelli X, Capet F, Paul JF, Dumeignil F, Gauvin RM. Manganese Pincer Complexes for the Base-Free, Acceptorless Dehydrogenative Coupling of Alcohols to Esters: Development, Scope, and Understanding. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03554] [Citation(s) in RCA: 170] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Duc Hanh Nguyen
- Univ.
Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 (UCCS), Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Xavier Trivelli
- Univ.
Lille, CNRS, UMR 8576 (UGSF), Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Frédéric Capet
- Univ.
Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 (UCCS), Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Jean-François Paul
- Univ.
Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 (UCCS), Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Franck Dumeignil
- Univ.
Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 (UCCS), Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Régis M. Gauvin
- Univ.
Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 (UCCS), Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
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46
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Kawanami H, Himeda Y, Laurenczy G. Formic Acid as a Hydrogen Carrier for Fuel Cells Toward a Sustainable Energy System. ADVANCES IN INORGANIC CHEMISTRY 2017. [DOI: 10.1016/bs.adioch.2017.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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47
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Pellow KJ, Wingad RL, Wass DF. Towards the upgrading of fermentation broths to advanced biofuels: a water tolerant catalyst for the conversion of ethanol to isobutanol. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01553d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conversion of methanol/ethanol mixtures to isobutanol with the pre-catalyst trans-[RuCl2(dppm)2] (1) is tolerant to the addition of water to the system, achieving an isobutanol yield of 36% at 78% selectivity with water concentrations typical of that of a crude fermentation broth.
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48
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Lu Y, Liu Z, Guo J, Qu S, Zhao R, Wang ZX. A DFT study unveils the secret of how H2 is activated in the N-formylation of amines with CO2 and H2 catalyzed by Ru(ii) pincer complexes in the absence of exogenous additives. Chem Commun (Camb) 2017; 53:12148-12151. [DOI: 10.1039/c7cc06795j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
DFT computations unraveled a new H2 activation mechanism used by Ru(ii) pincer complexes to catalyze the N-formylation of amines with CO2 and H2 in the absence of external additives.
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Affiliation(s)
- Yu Lu
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
| | - Zheyuan Liu
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
| | - Jiandong Guo
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
| | - Shuanglin Qu
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
| | - Ruihua Zhao
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
| | - Zhi-Xiang Wang
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences. Jia #19
- Yuquan Road
- Beijing
- China
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49
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Wei Z, Junge K, Beller M, Jiao H. Hydrogenation of phenyl-substituted CN, CN,CC, CC and CO functional groups by Cr, Mo and W PNP pincer complexes – a DFT study. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00629b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrogenation of phenyl-substituted CN, CN, CC, CC and CO functional groups catalyzed by PNP pincer amido M(NO)(CO)(PNP) and amino HM(NO)(CO)(PNHP) complexes [M = Cr, Mo and W; PNP = N(CH2CH2P(isopropyl)2)2] has been computed.
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Affiliation(s)
- Zhihong Wei
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
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50
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Hou C, Jiang J, Li Y, Zhao C, Ke Z. When Bifunctional Catalyst Encounters Dual MLC Modes: DFT Study on the Mechanistic Preference in Ru-PNNH Pincer Complex Catalyzed Dehydrogenative Coupling Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02505] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cheng Hou
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, School of Materials
Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Jingxing Jiang
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, School of Materials
Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Yinwu Li
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, School of Materials
Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Cunyuan Zhao
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, School of Materials
Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zhuofeng Ke
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, School of Materials
Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
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