1
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Zichittella G, Ebrahim AM, Zhu J, Brenner AE, Drake G, Beckham GT, Bare SR, Rorrer JE, Román-Leshkov Y. Hydrogenolysis of Polyethylene and Polypropylene into Propane over Cobalt-Based Catalysts. JACS AU 2022; 2:2259-2268. [PMID: 36311830 PMCID: PMC9597591 DOI: 10.1021/jacsau.2c00402] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/15/2022] [Accepted: 09/15/2022] [Indexed: 05/22/2023]
Abstract
The development of technologies to recycle polyethylene (PE) and polypropylene (PP), globally the two most produced polymers, is critical to increase plastic circularity. Here, we show that 5 wt % cobalt supported on ZSM-5 zeolite catalyzes the solvent-free hydrogenolysis of PE and PP into propane with weight-based selectivity in the gas phase over 80 wt % after 20 h at 523 K and 40 bar H2. This catalyst significantly reduces the formation of undesired CH4 (≤5 wt %), a product which is favored when using bulk cobalt oxide or cobalt nanoparticles supported on other carriers (selectivity ≤95 wt %). The superior performance of Co/ZSM-5 is attributed to the stabilization of dispersed oxidic cobalt nanoparticles by the zeolite support, preventing further reduction to metallic species that appear to catalyze CH4 generation. While ZSM-5 is also active for propane formation at 523 K, the presence of Co promotes stability and selectivity. After optimizing the metal loading, it was demonstrated that 10 wt % Co/ZSM-5 can selectively catalyze the hydrogenolysis of low-density PE (LDPE), mixtures of LDPE and PP, as well as postconsumer PE, showcasing the effectiveness of this technology to upcycle realistic plastic waste. Cobalt supported on zeolites FAU, MOR, and BEA were also effective catalysts for C2-C4 hydrocarbon formation and revealed that the framework topology provides a handle to tune gas-phase selectivity.
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Affiliation(s)
- Guido Zichittella
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Amani M. Ebrahim
- SLAC
National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Jie Zhu
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Anna E. Brenner
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Griffin Drake
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Gregg T. Beckham
- Renewable
Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
- BOTTLE
Consortium, Golden, Colorado 80401, United
States
| | - Simon R. Bare
- SLAC
National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Julie E. Rorrer
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Yuriy Román-Leshkov
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
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2
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Achieving complete electrooxidation of ethanol by single atomic Rh decoration of Pt nanocubes. Proc Natl Acad Sci U S A 2022; 119:e2112109119. [PMID: 35263231 PMCID: PMC8931248 DOI: 10.1073/pnas.2112109119] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Direct ethanol fuel cells are attracting growing attention as portable power sources due to their advantages such as higher mass-energy density than hydrogen and less toxicity than methanol. However, it is challenging to achieve the complete electrooxidation to generate 12 electrons per ethanol, resulting in a low fuel utilization efficiency. This manuscript reports the complete ethanol electrooxidation by engineering efficient catalysts via single-atom modification. The combined electrochemical measurements, in situ characterization, and density functional theory calculations unravel synergistic effects of single Rh atoms and Pt nanocubes and identify reaction pathways leading to the selective C–C bond cleavage to oxidize ethanol to CO2. This study provides a unique single-atom approach to tune the activity and selectivity toward complicated electrocatalytic reactions. The development of single site electrocatalysts such as single-atom catalyst (SAC) has demonstrated the advantages of high precious metal utilization and tunable metal-support interfacial properties. However, the fundamental understanding of unalloyed single metal atom decorated on a metallic substrate is still lacking. Herein, we report unalloyed single atomic, partially oxidized Rh on the Pt nanocube surface as the electrocatalyst to completely oxidize ethanol to CO2 at a record-low potential of 0.35 V. In situ X-ray absorption fine structure measurements and density functional theory calculations reveal that the single-atom Rh sites facilitate the C–C bond cleavage and the removal of the *CO intermediates. This work not only reveals the fundamental role of unalloyed, partially oxidized SAC in ethanol oxidation reaction but also offers a unique single-atom approach using low-coordination active sites on shape-controlled nanocatalysts to tune the activity and selectivity toward complicated catalytic reactions.
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3
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Jiang B, Song H, Kang Y, Wang S, Wang Q, Zhou X, Kani K, Guo Y, Ye J, Li H, Sakka Y, Henzie J, Yusuke Y. A mesoporous non-precious metal boride system: synthesis of mesoporous cobalt boride by strictly controlled chemical reduction. Chem Sci 2019; 11:791-796. [PMID: 34123054 PMCID: PMC8145993 DOI: 10.1039/c9sc04498a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Generating high surface area mesoporous transition metal boride is interesting because the incorporation of boron atoms generates lattice distortions that lead to the formation of amorphous metal boride with unique properties in catalysis. Here we report the first synthesis of mesoporous cobalt boron amorphous alloy colloidal particles using a soft template-directed assembly approach. Dual reducing agents are used to precisely control the chemical reduction process of mesoporous cobalt boron nanospheres. The Earth-abundance of cobalt boride combined with the high surface area and mesoporous nanoarchitecture enables solar-energy efficient photothermal conversion of CO2 into CO compared to non-porous cobalt boron alloys and commercial cobalt catalysts.
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Affiliation(s)
- Bo Jiang
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan .,Research Center for Functional Materials, National Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
| | - Hui Song
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yunqing Kang
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan .,The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Shengyao Wang
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Qi Wang
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Xin Zhou
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Kenya Kani
- School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland Brisbane Queensland 4072 Australia
| | - Yanna Guo
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Jinhua Ye
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Hexing Li
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Yoshio Sakka
- Research Center for Functional Materials, National Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
| | - Joel Henzie
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yamauchi Yusuke
- School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland Brisbane Queensland 4072 Australia .,Department of Plant and Environmental New Resources, Kyung Hee University 1732 Deogyeong-daero, Giheung-gu Yongin-si Gyeonggi-do 446-701 South Korea
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4
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Soldatov MA, Martini A, Bugaev AL, Pankin I, Medvedev PV, Guda AA, Aboraia AM, Podkovyrina YS, Budnyk AP, Soldatov AA, Lamberti C. The insights from X-ray absorption spectroscopy into the local atomic structure and chemical bonding of Metal–organic frameworks. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Fischer S, Rösel A, Kammer A, Barsch E, Schoch R, Junge H, Bauer M, Beller M, Ludwig R. Diferrate [Fe2
(CO)6
(μ-CO){μ-P(aryl)2
}]−
as Self-Assembling Iron/Phosphor-Based Catalyst for the Hydrogen Evolution Reaction in Photocatalytic Proton Reduction-Spectroscopic Insights. Chemistry 2018; 24:16052-16065. [DOI: 10.1002/chem.201802694] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Steffen Fischer
- Physical and Theoretical Chemistry Department; University of Rostock; Dr.-Lorenz-Weg 2 18059 Rostock Germany
- Department of Life, Light & Matter; University of Rostock; Albert-Einstein-Straße 25 18059 Rostock Germany
| | - Arend Rösel
- Physical and Theoretical Chemistry Department; University of Rostock; Dr.-Lorenz-Weg 2 18059 Rostock Germany
| | - Anja Kammer
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock); Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Enrico Barsch
- Physical and Theoretical Chemistry Department; University of Rostock; Dr.-Lorenz-Weg 2 18059 Rostock Germany
| | - Roland Schoch
- Department Chemie; Fakultät Naturwissenschaften; Paderborn University; Warburger Str. 100 33098 Paderborn Germany
| | - Henrik Junge
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock); Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Bauer
- Department Chemie; Fakultät Naturwissenschaften; Paderborn University; Warburger Str. 100 33098 Paderborn Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock); Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ralf Ludwig
- Physical and Theoretical Chemistry Department; University of Rostock; Dr.-Lorenz-Weg 2 18059 Rostock Germany
- Department of Life, Light & Matter; University of Rostock; Albert-Einstein-Straße 25 18059 Rostock Germany
- Leibniz-Institut für Katalyse e.V. (LIKAT Rostock); Albert-Einstein-Straße 29a 18059 Rostock Germany
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6
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Erenburg SB, Trubina SV, Yukhin YM, Sharafutdinov MR. Structural characteristics of amorphous K-Bi citrate (De-Nol) and its aqueous solutions from EXAFS spectra. J Inorg Biochem 2016; 166:94-99. [PMID: 27838583 DOI: 10.1016/j.jinorgbio.2016.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 01/17/2023]
Abstract
EXAFS (Extended X-ray Absorption Fine Structure) spectra of an amorphous solid Bi complex with citrate (known as De-Nol) and its aqueous solutions in a wide concentration range are measured. For the solutions good agreement is revealed between their structural parameters and the averaged interatomic distances and coordination numbers of the crystalline polymeric bismuth citrate compound composed of 12-nuclear Bi clusters based on the structure Bi12O22. So, it is found that droplets of the colloidal solution have a core structure close to the solid Bi12O22 cluster structure. When the concentrated solution is diluted the cluster structure is somewhat modified, it remaining similar to the structure of the Bi12O22 cluster and even at a tenfold dilution and the nearest (oxygen) spheres of the Bi environment changing insignificantly. The appearance in this case of an additional oxygen atom at a large distance from the bismuth atom likely due to the presence of the oxygen atom from the hydroxyl group of the diluted aqueous solution. The appearance of such oxygen is in accordance with particles size increase for diluted solution obtained by small-angle X-ray diffraction measurements. It is established that the structure of the amorphous solid complex is multiphase and, as a whole, similar to the structure of the solid binuclear complexes.
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Affiliation(s)
- Simon B Erenburg
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Svetlana V Trubina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Yuri M Yukhin
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia.
| | - Marat R Sharafutdinov
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia.
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7
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Guda SA, Guda AA, Soldatov MA, Lomachenko KA, Bugaev AL, Lamberti C, Gawelda W, Bressler C, Smolentsev G, Soldatov AV, Joly Y. Optimized Finite Difference Method for the Full-Potential XANES Simulations: Application to Molecular Adsorption Geometries in MOFs and Metal-Ligand Intersystem Crossing Transients. J Chem Theory Comput 2015; 11:4512-21. [PMID: 26575941 DOI: 10.1021/acs.jctc.5b00327] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Accurate modeling of the X-ray absorption near-edge spectra (XANES) is required to unravel the local structure of metal sites in complex systems and their structural changes upon chemical or light stimuli. Two relevant examples are reported here concerning the following: (i) the effect of molecular adsorption on 3d metals hosted inside metal-organic frameworks and (ii) light induced dynamics of spin crossover in metal-organic complexes. In both cases, the amount of structural models for simulation can reach a hundred, depending on the number of structural parameters. Thus, the choice of an accurate but computationally demanding finite difference method for the ab initio X-ray absorption simulations severely restricts the range of molecular systems that can be analyzed by personal computers. Employing the FDMNES code [Phys. Rev. B, 2001, 63, 125120] we show that this problem can be handled if a proper diagonalization scheme is applied. Due to the use of dedicated solvers for sparse matrices, the calculation time was reduced by more than 1 order of magnitude compared to the standard Gaussian method, while the amount of required RAM was halved. Ni K-edge XANES simulations performed by the accelerated version of the code allowed analyzing the coordination geometry of CO and NO on the Ni active sites in CPO-27-Ni MOF. The Ni-CO configuration was found to be linear, while Ni-NO was bent by almost 90°. Modeling of the Fe K-edge XANES of photoexcited aqueous [Fe(bpy)3](2+) with a 100 ps delay we identified the Fe-N distance elongation and bipyridine rotation upon transition from the initial low-spin to the final high-spin state. Subsequently, the X-ray absorption spectrum for the intermediate triplet state with expected 100 fs lifetime was theoretically predicted.
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Affiliation(s)
| | | | | | - Kirill A Lomachenko
- Department of Chemistry, NIS and CrisDi Centers, Turin University and INSTM Reference Center , 10125 Turin, Turin, Italy
| | | | - Carlo Lamberti
- Department of Chemistry, NIS and CrisDi Centers, Turin University and INSTM Reference Center , 10125 Turin, Turin, Italy
| | | | - Christian Bressler
- European XFEL, Albert-Einstein-Ring 19, 22761 Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging (CUI), Universität Hamburg , Luruper Chaussee 149, 22761 Hamburg, Germany
| | | | | | - Yves Joly
- Inst NEEL, Université Grenoble Alpes , 38042 Grenoble, France.,Institut NEEL, CNRS , 38042 Grenoble, France
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8
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Kornienko N, Resasco J, Becknell N, Jiang CM, Liu YS, Nie K, Sun X, Guo J, Leone SR, Yang P. Operando Spectroscopic Analysis of an Amorphous Cobalt Sulfide Hydrogen Evolution Electrocatalyst. J Am Chem Soc 2015; 137:7448-55. [DOI: 10.1021/jacs.5b03545] [Citation(s) in RCA: 291] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nikolay Kornienko
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Joaquin Resasco
- Department
of Chemical Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Nigel Becknell
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Chang-Ming Jiang
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Yi-Sheng Liu
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kaiqi Nie
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Soochow University-Western University Centre for Synchrotron Radiation Research, Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science & Technology, Soochow University, Suzhou 215123, China
| | - Xuhui Sun
- Soochow University-Western University Centre for Synchrotron Radiation Research, Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science & Technology, Soochow University, Suzhou 215123, China
| | - Jinghua Guo
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Stephen R. Leone
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
- Department
of Physics, University of California, Berkeley, Berkeley, California 94720, United States
| | - Peidong Yang
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
- Kavli Energy Nanoscience Institute, Berkeley, California 94720, United States
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9
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Bordiga S, Groppo E, Agostini G, van Bokhoven JA, Lamberti C. Reactivity of Surface Species in Heterogeneous Catalysts Probed by In Situ X-ray Absorption Techniques. Chem Rev 2013; 113:1736-850. [DOI: 10.1021/cr2000898] [Citation(s) in RCA: 488] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silvia Bordiga
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Elena Groppo
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Giovanni Agostini
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Jeroen A. van Bokhoven
- ETH Zurich, Institute for Chemical and Bioengineering, HCI E127 8093 Zurich, Switzerland
- Laboratory for Catalysis and Sustainable Chemistry (LSK) Swiss Light Source, Paul Scherrer Instituteaul Scherrer Institute, Villigen, Switzerland
| | - Carlo Lamberti
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
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10
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Jennerjahn R, Jackstell R, Piras I, Franke R, Jiao H, Bauer M, Beller M. Benign catalysis with iron: unique selectivity in catalytic isomerization reactions of olefins. CHEMSUSCHEM 2012; 5:734-739. [PMID: 22411860 DOI: 10.1002/cssc.201100404] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 12/05/2011] [Indexed: 05/31/2023]
Abstract
The use of noble metal catalysts in homogeneous catalysis has been well established. Due to their price and limited availability, there is growing interest in the substitution of such precious metal complexes with readily available and bio-relevant catalysts. In particular, iron is a "rising star" in catalysis. Herein, we present a general and selective iron-catalyzed monoisomerization of olefins, which allows for the selective generation of 2-olefins. Typically, common metal complexes give mixtures of various internal olefins. Both bulk-scale terminal olefins and functionalized terminal olefins give the corresponding products under mild conditions in good to excellent yields. The proposed reaction mechanism was elucidated by in situ NMR studies and supported by DFT calculations and extended X-ray absorption fine structure (EXAFS) measurements.
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Affiliation(s)
- Reiko Jennerjahn
- Leibniz-Institut für Katalyse eV an der Universität Rostock, Rostock, Germany
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11
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Minato T, Izumi Y, Aika KI, Ishiguro A, Nakajima T, Wakatsuki Y. Nitric Oxide Reduction by Carbon Monoxide over Supported Hexaruthenium Cluster Catalysts. 1. The Active Site Structure That Depends on Supporting Metal Oxide and Catalytic Reaction Conditions. J Phys Chem B 2003; 107:9022-8. [DOI: 10.1021/jp034412g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taketoshi Minato
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yasuo Izumi
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Ken-ichi Aika
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Atsushi Ishiguro
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takayuki Nakajima
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yasuo Wakatsuki
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and
Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, and
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
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12
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Lamberti C, Bordiga S, Salvalaggio M, Spoto G, Zecchina A, Geobaldo F, Vlaic G, Bellatreccia M. XAFS, IR, and UV−Vis Study of the CuI Environment in CuI-ZSM-5. J Phys Chem B 1997. [DOI: 10.1021/jp9601577] [Citation(s) in RCA: 294] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Lamberti
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - S. Bordiga
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - M. Salvalaggio
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - G. Spoto
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - A. Zecchina
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - F. Geobaldo
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
| | - G. Vlaic
- Dipartimento di Scienze Chimiche, Via Valerio 28, Trieste, and Sincrotrone Trieste SCpA, Padriciano 99, I-34012 Trieste, Italy
| | - M. Bellatreccia
- Dipartimento di Chimica, Universitá “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Roma, Italy
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13
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Strange RW, Murphy LM, Karlsson BG, Reinhammar B, Hasnain SS. Effect of pH and ligand binding on the structure of the Cu site of the Met121Glu mutant of azurin from Pseudomonas aeruginosa. Biochemistry 1996; 35:16391-8. [PMID: 8973215 DOI: 10.1021/bi961682z] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A pH-dependent X-ray absorption fine structure (XAFS) study has been undertaken to provide a structural interpretation of the spectroscopic properties of the Met121 Glu mutant of azurin from Pseudomonas aeruginosa (Azp). Ligand binding studies have been carried out to investigate the effect of the cavity formed at the Cu site as a result of the mutation. The optical spectrum at pH 4 exhibits an intense band at approximately 600 nm and a weaker band at approximately 450 nm, typical for the blue copper proteins. As the pH is increased, these bands decrease in intensity and shift to 570 and 413 nm, respectively, with the latter becoming the more intense of the two [Karlsson, B.G., et al. (1991) Protein Eng. 4 (3), 343-349]. These changes are accompanied by a change in the EPR spectrum from a rhombic type 1 Cu spectrum at pH 4 to a spectrum with the rhombic splitting decreasing to zero and the hyperfine coupling increasing from 25 to 83 G. X-ray absorption a the Cu K-edge shows that this change results from the lengthening of the Cu-His (by 0.07 A) and Cu-Cys (by 0.06 A) bonds and the coordination of one of the oxygen atoms of the glutamate ligand at pH 8, at a distance as close as 1.90 A. The copper site thus changes from a normal type 1 copper center with three strong bonds at pH 4 to a copper site with four strong bonds at pH 8, with Cu-His distances significantly longer than known distances for type 1 copper centres measured using the XAFS technique. The XAFS of the azide derivative measured at pH 8 shows a similar Cu coordination, with azide replacing glutamate as the fourth ligand. Azide binding at pH 8 is accompanied by a further increase in the EPR hyperfine coupling to 110 G. This structural information when taken together with recent structural sudies on copper proteins points toward the need for a reexamination of the basis on which copper proteins are classified.
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Affiliation(s)
- R W Strange
- Molecular Biophysics Group, CCLRC Daresbury Laboratory, Warrington, Cheshire, U.K
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Binsted N, Norman D, Thornton G. Analysis of extended x-ray-absorption fine-structure spectra of transition-metal sulfides and sulfur on nickel surfaces. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:7905-7908. [PMID: 9977382 DOI: 10.1103/physrevb.51.7905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Atherton MJ, Coleman KS, Fawcett J, Holloway JH, Hope EG, Karaçar A, Peck LA, Saunders GC. Pentafluorophenylphosphine complexes of rhodium(I): extended X-ray absorption fine structure studies of [{Rh[PPhx(C6F5)3 –x]2(µ-CI)}n](x= 0–2) and [{Rh[(C6F5)2PCH2CH2P(C6F5)2](µ-CI)}2]. Crystal structures of [RhCl(PPh3){(C6F5)2PCH2CH2P(C6F5)2}]·C4H8O and (C6F5)2PCH2CH2P(C6F5)2. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/dt9950004029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vaarkamp M, Dring I, Oldman RJ, Stern EA, Koningsberger DC. Comparison of theoretical methods for the calculation of extended x-ray-absorption fine structure. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:7872-7883. [PMID: 9974776 DOI: 10.1103/physrevb.50.7872] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Binsted N, Norman D. Multiple-scattering effects in polarization-dependent surface XAFS. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:15531-15543. [PMID: 10010683 DOI: 10.1103/physrevb.49.15531] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Brewer SA, Brisdon AK, Holloway JH, Hope EG. Exafs studies on solutions of metal hexafluorides in anhydrous HF. Polyhedron 1994. [DOI: 10.1016/s0277-5387(00)81679-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Iwasawa Y. Chemical design and characterization of catalysts and catalysis: an approach to dynamic catalyst design. Catal Today 1993. [DOI: 10.1016/0920-5861(93)80101-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fronzoni G, Decleva P, Lisini A. Ab initio CI calculation of K shell absorption spectra in transition metal compounds. Chem Phys 1993. [DOI: 10.1016/0301-0104(93)80051-a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Murphy LM, Strange RW, Karlsson BG, Lundberg LG, Pascher T, Reinhammar B, Hasnain SS. Structural characterization of azurin from Pseudomonas aeruginosa and some of its methionine-121 mutants. Biochemistry 1993; 32:1965-75. [PMID: 8383530 DOI: 10.1021/bi00059a013] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Azurin from Pseudomonas aeruginosa and two mutants where the methionine ligand has been mutated have been studied in order to directly investigate the functional and structural significance of this ligand in the blue copper proteins. Reduction potentials, X-ray absorption fine structure (XAFS), electron paramagnetic resonance (EPR), and optical spectra are obtained in an attempt to provide a direct correlation between the spectrochemical properties and the immediate structure of this redox center.
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Affiliation(s)
- L M Murphy
- Molecular Biophysics Group, Daresbury Laboratory, Warrington, Cheshire, U.K
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Binsted N, Strange RW, Hasnain SS. Constrained and restrained refinement in EXAFS data analysis with curved wave theory. Biochemistry 1992; 31:12117-25. [PMID: 1280998 DOI: 10.1021/bi00163a021] [Citation(s) in RCA: 219] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This paper describes methods of constrained and restrained refinement of EXAFS data which provide a means of substantially reducing the number of independent parameters compared to conventional least-squares methods commonly used. Constrained refinement allows a major reduction in the number of free parameters for a refinement of a structural model. In restrained refinement, additional structural information from well-characterized small molecules is used to provide additional observations in the data analysis. Even though these methods are of general application to the majority of complex systems, they are particularly valuable for biological molecules. The methods are of major advantage for ligands where significant multiple scattering is present, e.g., histidine, tyrosine, CO, CN, etc. The bases of these methods are described, and applications to some complex chemical and biological systems are given.
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Affiliation(s)
- N Binsted
- Molecular Biophysics Group, Daresbury Laboratory, Warrington, U.K
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Filipponi A, Di Cicco A, Zanoni R, Bellatreccia M, Sessa V, Dossi C, Psaro R. Multiple-scattering analysis of the X-ray absorption spectrum of Os3(CO)12 carbonyl cluster. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)80023-q] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Theoretical study of multiple-scattering effects in the X-ray absorption spectra of iron-porphyrins. Chem Phys 1991. [DOI: 10.1016/0301-0104(91)87036-u] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sakane H, Watanabe I, Ikeda S. EXAFS and XANES Spectra of Cobalt(III) EDTA Complexes in Solids and Solutions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.1513] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Marr G, Rockett BW. Organic reactions of selected π-complexes Annual survey covering the year 1987. J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)80469-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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