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Muhr M, Liang H, Allmendinger L, Bühler R, Napoli FE, Ukaj D, Cokoja M, Jandl C, Kahlal S, Saillard JY, Gemel C, Fischer RA. Catalytic Alkyne Semihydrogenation with Polyhydride Ni/Ga Clusters. Angew Chem Int Ed Engl 2023; 62:e202308790. [PMID: 37408378 DOI: 10.1002/anie.202308790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/05/2023] [Accepted: 07/05/2023] [Indexed: 07/07/2023]
Abstract
The bimetallic, decanuclear Ni3 Ga7 -cluster of the formula [Ni3 (GaTMP)3 (μ2 -GaTMP)3 (μ3 -GaTMP)] (1, TMP=2,2,6,6-tetramethylpiperidinyl) reacts reversibly with dihydrogen under the formation of a series of (poly-)hydride clusters 2. Low-temperature 2D NMR experiments at -80 °C show that 2 consist of a mixture of a di- (2Di ), tetra- (2Tetra ) and hexahydride species (2Hexa ). The structures of 2Di and 2Tetra are assessed by a combination of 2D NMR spectroscopy and DFT calculations. The cooperation of both metals is essential for the high hydrogen uptake of the cluster. Polyhydrides 2 are catalytically active in the semihydrogenation of 4-octyne to 4-octene with good selectivity. The example is the first of its kind and conceptually relates properties of molecular, atom-precise transition metal/main group metal clusters to the respective solid-state phase in catalysis.
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Affiliation(s)
- Maximilian Muhr
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Hao Liang
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000, Rennes, France
| | - Lars Allmendinger
- Department of Pharmacy, Ludwig-Maximilians-University Munich, Butenandtstrasse 7, 81377, Munich, Germany
| | - Raphael Bühler
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Fabrizio E Napoli
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Dardan Ukaj
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Mirza Cokoja
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Christian Jandl
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Samia Kahlal
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000, Rennes, France
| | | | - Christian Gemel
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
| | - Roland A Fischer
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Lichtenbergstraße 4, 85748, Garching, Germany
- Catalysis Research Centre, Technical University Munich, Ernst-Otto-Fischer Straße 1, 85748, Garching, Germany
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2
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Rosen AS, Vijay S, Persson KA. Free-atom-like d states beyond the dilute limit of single-atom alloys. Chem Sci 2023; 14:1503-1511. [PMID: 36794204 PMCID: PMC9906637 DOI: 10.1039/d2sc05772g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/13/2023] [Indexed: 01/21/2023] Open
Abstract
Through a data-mining and high-throughput density functional theory approach, we identify a diverse range of metallic compounds that are predicted to have transition metals with "free-atom-like" d states that are highly localized in terms of their energetic distribution. Design principles that favor the formation of localized d states are uncovered, among which we note that site isolation is often necessary but that the dilute limit, as in most single-atom alloys, is not a pre-requisite. Additionally, the majority of localized d state transition metals identified from the computational screening study exhibit partial anionic character due to charge transfer from neighboring metal species. Using CO as a representative probe molecule, we show that localized d states for Rh, Ir, Pd, and Pt tend to reduce the binding strength of CO compared to their pure elemental analogues, whereas this does not occur as consistently for the Cu binding sites. These trends are rationalized through the d-band model, which suggests that the significantly reduced d-band width results in an increased orthogonalization energy penalty upon CO chemisorption. With the multitude of inorganic solids that are predicted to have highly localized d states, the results of the screening study are likely to result in new avenues for heterogeneous catalyst design from an electronic structure perspective.
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Affiliation(s)
- Andrew S. Rosen
- Department of Materials Science and Engineering, University of California, BerkeleyBerkeleyCalifornia94720USA,Miller Institute for Basic Research in Science, University of California, BerkeleyBerkeleyCalifornia 94720USA,Materials Science Division, Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA
| | - Sudarshan Vijay
- Department of Materials Science and Engineering, University of California, BerkeleyBerkeleyCalifornia94720USA,Materials Science Division, Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA
| | - Kristin A. Persson
- Department of Materials Science and Engineering, University of California, BerkeleyBerkeleyCalifornia94720USA,Molecular Foundry, Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA
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3
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Highly Enhanced Catalytic Stability of Copper by the Synergistic Effect of Porous Hierarchy and Alloying for Selective Hydrogenation Reaction. Catalysts 2021. [DOI: 10.3390/catal12010012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Supported copper has a great potential for replacing the commercial palladium-based catalysts in the field of selective alkynes/alkadienes hydrogenation due to its excellent alkene selectivity and relatively high activity. However, fatally, it has a low catalytic stability owing to the rapid oligomerization of alkenes on the copper surface. In this study, 2.5 wt% Cu catalysts with various Cu:Zn ratios and supported on hierarchically porous alumina (HA) were designed and synthesized by deposition–precipitation with urea. Macropores (with diameters of 1 μm) and mesopores (with diameters of 3.5 nm) were introduced by the hydrolysis of metal alkoxides. After in situ activation at 350 °C, the catalytic stability of Cu was highly enhanced, with a limited effect on the catalytic activity and alkene selectivity. The time needed for losing 10% butadiene conversion for Cu1Zn3/HA was ~40 h, which is 20 times higher than that found for Cu/HA (~2 h), and 160 times higher than that found for Cu/bulky alumina (0.25 h). It was found that this type of enhancement in catalytic stability was mainly due to the rapid mass transportation in hierarchically porous structure (i.e., four times higher than that in bulky commercial alumina) and the well-dispersed copper active site modified by Zn, with identification by STEM–HAADF coupled with EDX. This study offers a universal way to optimize the catalytic stability of selective hydrogenation reactions.
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Yuan Y, Yang Z, Lai W, Gao L, Li M, Zhang J, Huang H. Intermetallic Compounds: Liquid-Phase Synthesis and Electrocatalytic Applications. Chemistry 2021; 27:16564-16580. [PMID: 34428332 DOI: 10.1002/chem.202102500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Indexed: 12/19/2022]
Abstract
Characterized by long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure, intermetallics have attracted increasing attention in the area of chemical synthesis and catalytic applications. Liquid-phase synthesis of intermetallics has arisen as the promising methodology due to its precise control over size, shape, and resistance toward sintering compared with the traditional metallurgy. This short review tends to provide perspectives on the liquid-phase synthesis of intermetallics in terms of both thermodynamics and methodology, as well as its applications in various catalytic reactions. Specifically, basic thermodynamics and kinetics in the synthesis of intermetallics will be first discussed, followed by discussing the main factors that will affect the formation of intermetallics during synthesis. The application of intermetallics in electrocatalysis will be demonstrated case by case at last. We conclude the review with perspectives on the future developments with respect to both synthesis and catalytic applications.
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Affiliation(s)
- Yuliang Yuan
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Zhilong Yang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Wenchuan Lai
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Lei Gao
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Mengfan Li
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Jiawei Zhang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Hongwen Huang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China Hefei, Anhui, 230026, P. R. China
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5
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Yuan D, Cai L, Xie T, Liao H, Hu W. Selective hydrogenation of acetylene on Cu-Pd intermetallic compounds and Pd atoms substituted Cu(111) surfaces. Phys Chem Chem Phys 2021; 23:8653-8660. [PMID: 33876026 DOI: 10.1039/d0cp05285j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective hydrogenation of acetylene was studied on the ordered Cu-Pd intermetallic compounds (L10-type CuPd, L12-type Cu3Pd, and L12-type CuPd3) and Pd-modified Cu(111) surfaces through first-principles calculations. The catalytic selectivity and activity of Cu-Pd alloy catalysts are closely related to the crystal structure and composition of Cu-Pd intermetallic compounds and the size of Pd ensembles of Cu-based dilute alloy surface for the selective hydrogenation of acetylene to ethylene. Significantly, we found that the ordered Cu-Pd alloy surface containing isolated Pd atoms (i.e., L12-type Cu3Pd(111) surface) is highly efficient for the selective hydrogenation reaction of C2H2 + H2→ C2H4. The contiguous Pd atom ensembles (Pd dimer and trimer) are catalytically active towards C2H2 + H → C2H3 and C2H3 + H → C2H4 reactions than the single Pd atom on a Pd-decorated Cu(111) surface. However, the small Pd ensembles on Cu(111) present a low chemical activity for H2 dissociation compared with the ordered Cu-Pd intermetallic compounds. Our theoretical results provide a strategy of crystal phase and composition control for enhancing the selectivity and activity of Cu-Pd catalysts towards acetylene selective hydrogenation.
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Affiliation(s)
- Dingwang Yuan
- Hunan University, College of Materials Science and Engineering, Changsha 410082, China.
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7
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Brix F, Simon R, Gaudry É. The (010) Surface of the Al
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Cr
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Complex Intermetallic Compound: Insights from Density Functional Theory. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Florian Brix
- CNRS, Institut Jean Lamour Université Lorraine 54000 Nancy France
| | - Romain Simon
- CNRS, Institut Jean Lamour Université Lorraine 54000 Nancy France
- École des Mines de Nancy Université Lorraine 54000 Nancy France
| | - Émilie Gaudry
- CNRS, Institut Jean Lamour Université Lorraine 54000 Nancy France
- École des Mines de Nancy Université Lorraine 54000 Nancy France
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8
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Markov PV, Bukhtiyarov AV, Mashkovsky IS, Smirnova NS, Prosvirin IP, Vinokurov ZS, Panafidin MA, Baeva GN, Zubavichus YV, Bukhtiyarov VI, Stakheev AY. PdIn/Al2O3 Intermetallic Catalyst: Structure and Catalytic Characteristics in Selective Hydrogenation of Acetylene. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158419060065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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9
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Hornung J, Muhr M, Gemel C, Fischer RA. All-zinc coordinated nickel-complexes as molecular mimics for NiZn catalyst surfaces, a density functional theory study. Dalton Trans 2019; 48:11743-11748. [PMID: 31298254 DOI: 10.1039/c9dt02005e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A prospective connection between Hume-Rothery inspired TM/E (TM = transition metal; E = Al, Ga, Zn) complexes and clusters with the related solid-state intermetallic TM/E compounds is presented with respect to the industrially relevant catalytic semihydrogenation of acetylene. The theoretical study dealing with [Ni(ER)n(C2Hx)4-n] (x = 2, 4; R = CH3, C5Me5,) calculated on the DFT level of theory shows intriguing structural and electronic properties of the examined complexes. Different Ni-E complexes show preferred binding of C2H2 over C2H4 in bridging positions between Ni and E depending on the [Ni(ER)n] fragment. These findings render molecular TM/E systems, such as Ni/Zn, promising candidates to mimic key intermediates of intermetallic catalysts applied in heterogeneous hydrogenation reactions. We put these findings into the context of existing synthetic results and illustrate different experimental approaches to obtain compounds of the general formula [TMaEb](Cp*)c(UHC)d (UHC = unsaturated hydrocarbon ligands) as potential surface models.
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Affiliation(s)
- Julius Hornung
- Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
| | - Maximilian Muhr
- Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
| | - Christian Gemel
- Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
| | - Roland A Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
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10
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Liu Z, Sorrell CC, Koshy P, Hart JN. DFT Study of Methanol Adsorption on Defect-Free CeO 2 Low-Index Surfaces. Chemphyschem 2019; 20:2074-2081. [PMID: 31232505 DOI: 10.1002/cphc.201900583] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Indexed: 11/06/2022]
Abstract
Methanol decomposition is a promising method for hydrogen production. However, the performance of current catalysts for this process is not sufficient for commercial applications. In this work, methanol adsorption on the CeO2 low-index surfaces is studied by density functional theory (DFT). The results show that methanol always dissociates spontaneously on the (100) surface, whereas dissociation on the (110) surface is site-selective; dissociation does not occur at all on the (111) surface, where only weak physisorption is found. The results confirm that surfaces with higher energies are more catalytically active. Analysis of the surface geometries shows that the dominant factors for the dissociation of methanol are the degree of undercoordination and the charges of the surface ions. The adsorption energy of each methanol molecule decreases with increasing coverage and there is a transition threshold between dissociative and associative adsorption. The present work indicates that a strategy to design catalysts with high activity is to maximize exposure of surfaces on which the ions have a high degree of undercoordination and a strong tendency to donate/accept electrons. The results demonstrate the importance of appropriately selecting and controlling exposed facets and particle morphology for optimizing catalyst performance.
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Affiliation(s)
- Zhao Liu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China.,School of Materials Science and Engineering, UNSW Sydney, NSW, 2052, Australia
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, NSW, 2052, Australia
| | - Pramod Koshy
- School of Materials Science and Engineering, UNSW Sydney, NSW, 2052, Australia
| | - Judy N Hart
- School of Materials Science and Engineering, UNSW Sydney, NSW, 2052, Australia
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11
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Itahara H, Simanullang WF, Takahashi N, Kosaka S, Furukawa S. Na-Melt Synthesis of Fine Ni3Si Powders as a Hydrogenation Catalyst. Inorg Chem 2019; 58:5406-5409. [DOI: 10.1021/acs.inorgchem.9b00521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Itahara
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi Nagakute, Aichi 480-1192, Japan
| | | | - Naoko Takahashi
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi Nagakute, Aichi 480-1192, Japan
| | - Satoru Kosaka
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi Nagakute, Aichi 480-1192, Japan
| | - Shinya Furukawa
- Institute for Catalysis, Hokkaido University, N21 W10 Kita-ku, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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12
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Song Y, Laursen S. Control of surface reactivity towards unsaturated C C bonds and H over Ni-based intermetallic compounds in semi-hydrogenation of acetylene. J Catal 2019. [DOI: 10.1016/j.jcat.2019.02.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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14
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Selective hydrogenation of polyunsaturated hydrocarbons and unsaturated aldehydes over bimetallic catalysts. ADVANCES IN CATALYSIS 2019. [DOI: 10.1016/bs.acat.2019.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Synthetically tuned electronic and geometrical properties of intermetallic compounds as effective heterogeneous catalysts. PROG SOLID STATE CH 2018. [DOI: 10.1016/j.progsolidstchem.2018.09.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Tuning the surface structure and catalytic performance of PdIn/Al2O3 in selective liquid-phase hydrogenation by mild oxidative-reductive treatments. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.11.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Kojima T, Kameoka S, Fujii S, Ueda S, Tsai AP. Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materials. SCIENCE ADVANCES 2018; 4:eaat6063. [PMID: 30345356 PMCID: PMC6195335 DOI: 10.1126/sciadv.aat6063] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 09/10/2018] [Indexed: 05/14/2023]
Abstract
Heusler alloys (X 2 YZ) are well-established intermetallic compound materials in various fields because their function can be precisely adjusted by elemental substitution (e.g., X 2 YZ 1-x Z' x ). Although intermetallic compound catalysts started attracting attention recently, catalysis researchers are not familiar with Heusler alloys. We report their potential as novel catalysts focusing on the selective hydrogenation of alkynes. We found that Co2MnGe and Co2FeGe alloys have great alkene selectivity. Mutual substitution of Mn and Fe (Co2Mn x Fe1-x Ge) enhanced the reaction rate without changing selectivity. The substitution of Ga for Ge decreased the selectivity but increased the reaction rate monotonically with Ga composition. Elucidation of these mechanisms revealed that the fine tuning of catalytic properties is possible in Heusler alloys by separately using ligand and ensemble effects of elemental substitution.
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Affiliation(s)
- Takayuki Kojima
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Satoshi Kameoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Shinpei Fujii
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Shigenori Ueda
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
- Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, Hyogo 679-5148, Japan
| | - An-Pang Tsai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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18
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Mashkovsky IS, Markov PV, Bragina GO, Baeva GN, Rassolov AV, Bukhtiyarov AV, Prosvirin IP, Bukhtiyarov VI, Stakheev AY. PdZn/α-Al 2 O 3 catalyst for liquid-phase alkyne hydrogenation: effect of the solid-state alloy transformation into intermetallics. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.03.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Zimmermann RR, Hahn T, Reschetilowski W, Armbrüster M. Kinetic Parameters for the Selective Hydrogenation of Acetylene on GaPd 2 and GaPd. Chemphyschem 2017; 18:2517-2525. [PMID: 28815973 DOI: 10.1002/cphc.201700535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 11/10/2022]
Abstract
Intermetallic GaPd2 is a highly selective and stable catalyst for the semi-hydrogenation of acetylene. Knowledge of the underlying reaction kinetics is essential to gain a deeper understanding of the selective hydrogenation on this catalytic material. To date, there has been no experimental kinetic data published for this reaction on a well-defined intermetallic catalyst possessing isolated active sites. Kinetic measurements are performed at 140-200 °C, revealing an apparent activation energy of 29(2) kJ mol-1 . GaPd2 is shown to be the first binary catalyst material, which shows a positive reaction order (0.89) with respect to acetylene at 200 °C. The influences on the extent of acetylene conversion, specific activity and selectivity to ethylene, ethane, and higher hydrocarbons are determined by a 24 factorial experiment following a design of experiments approach. Temperature and pressure have the strongest impact on these values. The results allow optimal operation for achieving high ethylene yields. A comparison of the reaction kinetics on GaPd2 with experimental results obtained for GaPd reveals different orders of reaction of H2 and C2 H2 on the two compounds.
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Affiliation(s)
- René R Zimmermann
- Materials for Innovative Energy Concepts, Faculty of Natural Sciences, Institute of Chemistry, University of Technology Chemnitz, Straße der Nationen 62, 09107, Chemnitz, Germany
| | - Tobias Hahn
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT Rostock), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Wladimir Reschetilowski
- Department of Chemistry and Food Chemistry, Dresden University of Technology, 01062, Dresden, Germany
| | - Marc Armbrüster
- Materials for Innovative Energy Concepts, Faculty of Natural Sciences, Institute of Chemistry, University of Technology Chemnitz, Straße der Nationen 62, 09107, Chemnitz, Germany
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Yan Y, Du JS, Gilroy KD, Yang D, Xia Y, Zhang H. Intermetallic Nanocrystals: Syntheses and Catalytic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605997. [PMID: 28234403 DOI: 10.1002/adma.201605997] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/11/2017] [Indexed: 05/21/2023]
Abstract
At the forefront of nanochemistry, there exists a research endeavor centered around intermetallic nanocrystals, which are unique in terms of long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure. In contrast to alloy nanocrystals with no elemental ordering, it is challenging to synthesize intermetallic nanocrystals with a tight control over their size and shape. Here, recent progress in the synthesis of intermetallic nanocrystals with controllable sizes and well-defined shapes is highlighted. A simple analysis and some insights key to the selection of experimental conditions for generating intermetallic nanocrystals are presented, followed by examples to highlight the viable use of intermetallic nanocrystals as electrocatalysts or catalysts for various reactions, with a focus on the enhanced performance relative to their alloy counterparts that lack elemental ordering. Within the conclusion, perspectives on future developments in the context of synthetic control, structure-property relationships, and applications are discussed.
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Affiliation(s)
- Yucong Yan
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Jingshan S Du
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
| | - Deren Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Hui Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
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Wang Z, Wang G, Louis C, Delannoy L. Novel non-noble bimetallic Cu-Zn/TiO2 catalysts for selective hydrogenation of butadiene. J Catal 2017. [DOI: 10.1016/j.jcat.2017.01.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Furukawa S, Komatsu T. Intermetallic Compounds: Promising Inorganic Materials for Well-Structured and Electronically Modified Reaction Environments for Efficient Catalysis. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02603] [Citation(s) in RCA: 275] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shinya Furukawa
- Department of Chemistry,
School of Science, Tokyo Institute of Technology 2-12-1-E1-10, Ookayama, Meguro-ku, Tokyo, Japan, 152-8550
| | - Takayuki Komatsu
- Department of Chemistry,
School of Science, Tokyo Institute of Technology 2-12-1-E1-10, Ookayama, Meguro-ku, Tokyo, Japan, 152-8550
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