1
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Gani TZH, Berkson ZJ, Zhu R, Kang JH, Di Iorio JR, Chan KW, Consoli DF, Shaikh SK, Copéret C, Román-Leshkov Y. Promoting active site renewal in heterogeneous olefin metathesis catalysts. Nature 2023; 617:524-528. [PMID: 37198312 DOI: 10.1038/s41586-023-05897-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 02/28/2023] [Indexed: 05/19/2023]
Abstract
As an atom-efficient strategy for the large-scale interconversion of olefins, heterogeneously catalysed olefin metathesis sees commercial applications in the petrochemical, polymer and speciality chemical industries1. Notably, the thermoneutral and highly selective cross-metathesis of ethylene and 2-butenes1 offers an appealing route for the on-purpose production of propylene to address the C3 shortfall caused by using shale gas as a feedstock in steam crackers2,3. However, key mechanistic details have remained ambiguous for decades, hindering process development and adversely affecting economic viability4 relative to other propylene production technologies2,5. Here, from rigorous kinetic measurements and spectroscopic studies of propylene metathesis over model and industrial WOx/SiO2 catalysts, we identify a hitherto unknown dynamic site renewal and decay cycle, mediated by proton transfers involving proximal Brønsted acidic OH groups, which operates concurrently with the classical Chauvin cycle. We show how this cycle can be manipulated using small quantities of promoter olefins to drastically increase steady-state propylene metathesis rates by up to 30-fold at 250 °C with negligible promoter consumption. The increase in activity and considerable reduction of operating temperature requirements were also observed on MoOx/SiO2 catalysts, showing that this strategy is possibly applicable to other reactions and can address major roadblocks associated with industrial metathesis processes.
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Affiliation(s)
- Terry Z H Gani
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Ran Zhu
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Jong Hun Kang
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - John R Di Iorio
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Ka Wing Chan
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Daniel F Consoli
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Sohel K Shaikh
- Research & Development Center, Saudi Aramco, Dhahran, Saudi Arabia
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
| | - Yuriy Román-Leshkov
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA.
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2
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Karpova TR, Lavrenov AV, Buluchevskii EA, Leontieva NN. Polyfunctional catalysis in conversion of light alkenes. Russ Chem Bull 2023; 72:379-392. [PMID: 37073400 PMCID: PMC10092927 DOI: 10.1007/s11172-023-3806-6] [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: 03/28/2022] [Revised: 08/18/2022] [Accepted: 09/04/2022] [Indexed: 04/20/2023]
Abstract
Light alkenes are among the main petrochemical intermediate products, the consumption of which is steadily growing. Using ethylene as an example, the possibilities of using polyfunctional heterogeneous catalysts for carrying out practically important reactions of its oligomerization, alkylation, and metathesis were considered. Particular attention was paid to catalysts for the conversion of ethylene to propylene.
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Affiliation(s)
- T. R. Karpova
- Center of New Chemical Technologies of the Federal Research Center, Boreskov Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, 54 ul. Neftezavodskaya, 644040 Omsk, Russian Federation
| | - A. V. Lavrenov
- Center of New Chemical Technologies of the Federal Research Center, Boreskov Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, 54 ul. Neftezavodskaya, 644040 Omsk, Russian Federation
| | - E. A. Buluchevskii
- Center of New Chemical Technologies of the Federal Research Center, Boreskov Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, 54 ul. Neftezavodskaya, 644040 Omsk, Russian Federation
| | - N. N. Leontieva
- Center of New Chemical Technologies of the Federal Research Center, Boreskov Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, 54 ul. Neftezavodskaya, 644040 Omsk, Russian Federation
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3
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Myradova M, Węgrzynowicz A, Węgrzyniak A, Gierada M, Jodlowski P, Łojewska J, Handzlik J, Michorczyk P. Tuning metathesis performance of molybdenum oxide-based catalyst by silica support acidity modulation and high temperature pretreatment. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02064a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molybdenum oxide-based catalysts containing 5 wt. % of Mo obtained by simple impregnation of silica mesoporous support were studied in olefin metathesis reaction at 50 °C. Effect of support modification...
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4
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Handzlik J, Kurleto K, Gierada M. Computational Insights into Active Site Formation during Alkene Metathesis over a MoO x/SiO 2 Catalyst: The Role of Surface Silanols. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03912] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jarosław Handzlik
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
| | - Kamil Kurleto
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
| | - Maciej Gierada
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, Kraków 31-155, Poland
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5
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Copéret C, Berkson ZJ, Chan KW, de Jesus Silva J, Gordon CP, Pucino M, Zhizhko PA. Olefin metathesis: what have we learned about homogeneous and heterogeneous catalysts from surface organometallic chemistry? Chem Sci 2021; 12:3092-3115. [PMID: 34164078 PMCID: PMC8179417 DOI: 10.1039/d0sc06880b] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/08/2021] [Indexed: 11/21/2022] Open
Abstract
Since its early days, olefin metathesis has been in the focus of scientific discussions and technology development. While heterogeneous olefin metathesis catalysts based on supported group 6 metal oxides have been used for decades in the petrochemical industry, detailed mechanistic studies and the development of molecular organometallic chemistry have led to the development of robust and widely used homogeneous catalysts based on well-defined alkylidenes that have found applications for the synthesis of fine and bulk chemicals and are also used in the polymer industry. The development of the chemistry of high-oxidation group 5-7 alkylidenes and the use of surface organometallic chemistry (SOMC) principles unlocked the preparation of so-called well-defined supported olefin metathesis catalysts. The high activity and stability (often superior to their molecular analogues) and molecular-level characterisation of these systems, that were first reported in 2001, opened the possibility for the first direct structure-activity relationships for supported metathesis catalysts. This review describes first the history of SOMC in the field of olefin metathesis, and then focuses on what has happened since 2007, the date of our last comprehensive reviews in this field.
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Affiliation(s)
- Christophe Copéret
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Zachariah J Berkson
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Ka Wing Chan
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Jordan de Jesus Silva
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Christopher P Gordon
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Margherita Pucino
- ETH Zürich, Department of Chemistry and Applied Biosciences Vladimir Prelog Weg 2 CH-8093 Zürich Switzerland
| | - Pavel A Zhizhko
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences Vavilov Str. 28 119991 Moscow Russia
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6
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Insights on alkylidene formation on Mo2C: A potential overlap between direct deoxygenation and olefin metathesis. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Novodárszki G, Szabó B, Auer R, Tóth K, Leveles L, Barthos R, Turczel G, Pászti Z, Valyon J, Mihályi MR, Tuba R. Propylene synthesis via isomerization–metathesis of 1-hexene and FCC olefins. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00269d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly efficient conversion of 1-hexene and FCC mixture to propylene via isomerization–metathesis (ISOMET) catalyzed by a HBEA–MoOx/Al2O3 system.
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Affiliation(s)
- Gyula Novodárszki
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Blanka Szabó
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Róbert Auer
- MOL, Hungarian Oil and Gas Public Limited Company, Október huszonharmadika u. 18, 1117 Budapest, Hungary
| | - Katalin Tóth
- MOL, Hungarian Oil and Gas Public Limited Company, Október huszonharmadika u. 18, 1117 Budapest, Hungary
| | - László Leveles
- MOL, Hungarian Oil and Gas Public Limited Company, Október huszonharmadika u. 18, 1117 Budapest, Hungary
| | - Róbert Barthos
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Gábor Turczel
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Zoltán Pászti
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - József Valyon
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Magdolna R. Mihályi
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
| | - Róbert Tuba
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, P.O. Box 286, 1519 Budapest, Hungary
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8
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Tielens F, Gierada M, Handzlik J, Calatayud M. Characterization of amorphous silica based catalysts using DFT computational methods. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.03.062] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Wu J, Ramanathan A, Kersting R, Jystad A, Zhu H, Hu Y, Marshall CP, Caricato M, Subramaniam B. Enhanced Olefin Metathesis Performance of Tungsten and Niobium Incorporated Bimetallic Silicates: Evidence of Synergistic Effects. ChemCatChem 2020. [DOI: 10.1002/cctc.201902131] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian‐Feng Wu
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
| | - Anand Ramanathan
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
| | | | - Amy Jystad
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
| | - Hongda Zhu
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
- Department of Chemical and Petroleum EngineeringThe University of Kansas Lawrence KS-66045 USA
| | - Yongfeng Hu
- Canadian Light Source Inc.University of Saskatchewan Saskatoon Saskatchewan S7 N 2 V3 Canada
| | - Craig P. Marshall
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
- Department of GeologyThe University of Kansas Lawrence KS-66045 USA
| | - Marco Caricato
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
| | - Bala Subramaniam
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
- Department of Chemical and Petroleum EngineeringThe University of Kansas Lawrence KS-66045 USA
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10
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Kiani D, Sourav S, Taifan W, Calatayud M, Tielens F, Wachs IE, Baltrusaitis J. Existence and Properties of Isolated Catalytic Sites on the Surface of β-Cristobalite-Supported, Doped Tungsten Oxide Catalysts (WOx/β-SiO2, Na-WOx/β-SiO2, Mn-WOx/β-SiO2) for Oxidative Coupling of Methane (OCM): A Combined Periodic DFT and Experimental Study. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05591] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - William Taifan
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Monica Calatayud
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, F-75005 Paris, France
| | - Frederik Tielens
- General Chemistry (ALGC)-Materials Modelling Group, Vrije Universiteit Brussel (Free University Brussels-VUB), Pleinlaan 2, 1050 Brussel, Belgium
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
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11
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Michorczyk P, Węgrzyniak A, Węgrzynowicz A, Handzlik J. Simple and Efficient Way of Molybdenum Oxide-Based Catalyst Activation for Olefins Metathesis by Methane Pretreatment. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03714] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Piotr Michorczyk
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
| | - Adam Węgrzyniak
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
| | - Adam Węgrzynowicz
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
| | - Jarosław Handzlik
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
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12
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Chan KW, Mance D, Safonova OV, Copéret C. Well-Defined Silica-Supported Tungsten(IV)-Oxo Complex: Olefin Metathesis Activity, Initiation, and Role of Brønsted Acid Sites. J Am Chem Soc 2019; 141:18286-18292. [PMID: 31618022 DOI: 10.1021/jacs.9b09493] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite the importance of the heterogeneous tungsten-oxo-based olefin metathesis catalyst (WO3/SiO2) in industry, understanding of its initiation mechanism is still very limited. It has been proposed that reduced W(IV)-oxo surface species act as precatalysts. In order to understand the reactivity and initiation mechanism of surface W(IV)-oxo species, we synthesized a well-defined silica-supported W(IV)-oxo species, (≡SiO)WO(OtBuF6)(py)3 (F6@SiO2-700; OtBuF6 = OC(CH3)(CF3)2; py = pyridine), via surface organometallic chemistry (SOMC). F6@SiO2-700 was shown to be highly active in olefin metathesis upon removal of pyridine ligands through the addition of tris(pentafluorophenyl)borane (B(C6F5)3) or thermal treatment under high vacuum. The metathesis activity toward olefins with and without allylic C-H groups, namely β-methylstyrene and styrene, respectively, was investigated. In the case of styrene, we demonstrated the role of surface OH groups in initiating metathesis activity. We proposed that the presence of strong Brønsted acidic OH sites, which likely arises from the presence of adjacent W sites in the catalyst as revealed by 15N-labeled pyridine adsorption, can assist styrene metathesis. In contrast, initiation of olefins with allylic C-H groups (e.g., β-methylstyrene) is independent of the surface OH density and likely involves an allylic C-H activation mechanism, like the molecular W(IV)-oxo species. This study indicates that initiation mechanisms depend on the olefinic substrates and reveals the synergistic effect of Brønsted acidic surface sites and reduced W(IV) sites in the initiation of olefin metathesis.
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Affiliation(s)
- Ka Wing Chan
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
| | - Deni Mance
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
| | | | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
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13
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Watmanee S, Suriye K, Praserthdam P, Panpranot J. Formation of isolated tungstate sites on hierarchical structured SiO2- and HY zeolite-supported WOx catalysts for propene metathesis. J Catal 2019. [DOI: 10.1016/j.jcat.2019.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Wu JF, Ramanathan A, Biancardi A, Jystad AM, Caricato M, Hu Y, Subramaniam B. Correlation of Active Site Precursors and Olefin Metathesis Activity in W-Incorporated Silicates. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03263] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian-Feng Wu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
- Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66047, United States
| | - Anand Ramanathan
- Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66047, United States
| | - Alessandro Biancardi
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Amy Marie Jystad
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Marco Caricato
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Yongfeng Hu
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Bala Subramaniam
- Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66047, United States
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
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16
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Chan KW, Lam E, D'Anna V, Allouche F, Michel C, Safonova OV, Sautet P, Copéret C. C-H Activation and Proton Transfer Initiate Alkene Metathesis Activity of the Tungsten(IV)-Oxo Complex. J Am Chem Soc 2018; 140:11395-11401. [PMID: 30110534 DOI: 10.1021/jacs.8b06603] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In alkene metathesis, while group 6 (Mo or W) high-oxidation state alkylidenes are accepted to be key reaction intermediates for both homogeneous and heterogeneous catalysts, it has been proposed that low valent species in their +4 oxidation state can serve as precatalysts. However, the activation mechanism for these latter species-generating alkylidenes-is still an open question. Here, we report the syntheses of tungsten(IV)-oxo bisalkoxide molecular complexes stabilized by pyridine ligands, WO(OR)2py3 (R = CMe(CF3)2 (2a), R = Si(O tBu)3 (2b), and R = C(CF3)3 (2c); py = pyridine), and show that upon activation with B(C6F5)3 they display alkene metathesis activities comparable to W(VI)-oxo alkylidenes. The initiation mechanism is examined by kinetic, isotope labeling and computational studies. Experimental evidence reveals that the presence of an allylic CH group in the alkene reactant is crucial for initiating alkene metathesis. Deuterium labeling of the allylic C-H group shows a primary kinetic isotope effect on the rate of initiation. DFT calculations support the formation of an allyl hydride intermediate via activation of the allylic C-H bond and show that formation of the metallacyclobutane from the allyl "hydride" involves a proton transfer facilitated by the coordination of a Lewis acid (B(C6F5)3) and assisted by a Lewis base (pyridine). This proton transfer step is rate determining and yields the metathesis active species.
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Affiliation(s)
- Ka Wing Chan
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
| | - Erwin Lam
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
| | - Vincenza D'Anna
- Univ Lyon, Ens de Lyon , CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie , F-69342 Lyon , France
| | - Florian Allouche
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
| | - Carine Michel
- Univ Lyon, Ens de Lyon , CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie , F-69342 Lyon , France
| | | | - Philippe Sautet
- Univ Lyon, Ens de Lyon , CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie , F-69342 Lyon , France.,Department of Chemical and Biomolecular Engineering , University of California, Los Angeles , Los Angeles , California 90095 , United States.,Department of Chemistry and Biochemistry , University of California, Los Angeles , Los Angeles , California 90095 , United States
| | - Christophe Copéret
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir Prelog Weg 1-5 , CH-8093 Zurich , Switzerland
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17
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Gayapan K, Sripinun S, Panpranot J, Praserthdam P, Assabumrungrat S. Effects of calcination and pretreatment temperatures on the catalytic activity and stability of H 2-treated WO 3/SiO 2 catalysts in metathesis of ethylene and 2-butene. RSC Adv 2018; 8:28555-28568. [PMID: 35542460 PMCID: PMC9084336 DOI: 10.1039/c8ra04949a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 08/05/2018] [Indexed: 11/21/2022] Open
Abstract
The effects of calcination and pretreatment temperatures of the H2-treated WO3/SiO2 catalysts in metathesis of ethylene and 2-butene to propylene were investigated. The results showed that pretreatment with pure hydrogen over the non-calcined catalysts resulted in higher activity and stability than the calcined catalysts, and the hydrogen pretreatment temperature at 650 °C offered the highest 2-butene conversion and propylene selectivity. The calcination of the catalyst before hydrogen pretreatment was proved to be unnecessary. As revealed by various characterization results from N2 physisorption, XRD, TEM, UV-Vis, Raman, in situ H2-TPR, in situ NH3-DRIFTS and in situ NH3-TPD techniques, activity of the metathesis of ethylene and 2-butene to propylene was related to tungsten dispersion on the support, WO2.83 and WO2 phase composition, and isolated surface tetrahedral tungsten oxide species. The stability of the metathesis reaction was also related to the total acidity and the acid sites of both Brønsted and Lewis acid sites.
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Affiliation(s)
- Krittidech Gayapan
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand +66-2218-6877 +66-2218-6868
| | - Sirada Sripinun
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand +66-2218-6877 +66-2218-6868
| | - Joongjai Panpranot
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand +66-2218-6877 +66-2218-6868
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand +66-2218-6877 +66-2218-6868
| | - Suttichai Assabumrungrat
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand +66-2218-6877 +66-2218-6868
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New synthetic approach towards well-defined silica supported tungsten bis-oxo, active catalysts for olefin metathesis. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.01.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Maity N, Barman S, Minenkov Y, Ould-Chikh S, Abou-Hamad E, Ma T, Qureshi ZS, Cavallo L, D’Elia V, Gates BC, Basset JM. A Silica-Supported Monoalkylated Tungsten Dioxo Complex Catalyst for Olefin Metathesis. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04304] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Niladri Maity
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Samir Barman
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Yury Minenkov
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Samy Ould-Chikh
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Edy Abou-Hamad
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Tao Ma
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, United States
| | - Ziyauddin S. Qureshi
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
- Center of Research Excellence in Petroleum Refining and Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
| | - Valerio D’Elia
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 21210, Payupnai, WangChan, Rayong, Thailand
| | - Bruce C. Gates
- Department of Chemical Engineering, University of California at Davis, Davis, California 95616, United States
| | - Jean-Marie Basset
- KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia
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Zuo G, Xu Y, Zheng J, Jiang F, Liu X. Investigation on converting 1-butene and ethylene into propene via metathesis reaction over W-based catalysts. RSC Adv 2018; 8:8372-8384. [PMID: 35542031 PMCID: PMC9078573 DOI: 10.1039/c7ra13776a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 02/16/2018] [Indexed: 12/04/2022] Open
Abstract
Supported W catalysts were extensively investigated for the conversion of 1-butene and ethylene into propene by metathesis reaction. The performance of catalysts was compared by using unsupported WO3, pure SBA-15, supported W/SBA-15 with different W loadings, varied calcination temperatures, and by changing the pretreatment gas atmosphere. The above catalytic results could be employed to deduce the reaction mechanism combined with characterization techniques such as BET, XRD, UV-vis DRS, Raman, pyridine-IR, XPS, and H2-TPR. In this study, over the investigated W/SBA-15 catalysts, the results showed that the silanol group (Si–OH) in SBA-15 could act as a weak Brønsted acid site for 1-butene isomerization. However, the metathesis reaction was catalyzed by W-carbene species. The initially formed W-carbenes (W
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CH–CH3) as active sites were derived from the partially reduced isolated tetrahedral WOx species which contained WO or W–OH bonds in W5+ species as corresponding Lewis or Brønsted acid sites. Furthermore, the W/SBA-15 being pretreated by H2O led to a complete loss of the metathesis activity. This was mainly due to the sintering of isolated WOx species to form an inactive crystalline WO3 phase as demonstrated by XRD patterns. On the other hand, the reduction of WOx species remarkably suppressed by H2O pretreatment was also responsible for the metathesis deactivation. This study provides molecular level mechanisms for the several steps involved in the propene production, including 1-butene isomerization, W-carbene formation, and metathesis reaction. The molecular level mechanism for conversion of 1-butene and ethylene into desired propene over W/SBA-15 catalysts has been elucidated.![]()
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Affiliation(s)
- Guangzheng Zuo
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Yuebing Xu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Jiao Zheng
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Feng Jiang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Xiaohao Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
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Novel tungsten-incorporated mesoporous silicates synthesized via evaporation-induced self-assembly: Enhanced metathesis performance. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Affiliation(s)
- Deryn E. Fogg
- Department of Chemistry and Biomolecular Sciences, and Centre for Catalysis Research & Innovation, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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23
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Merle N, Le Quéméner F, Barman S, Samantaray MK, Szeto KC, De Mallmann A, Taoufik M, Basset JM. Well-defined silica supported bipodal molybdenum oxo alkyl complexes: a model of the active sites of industrial olefin metathesis catalysts. Chem Commun (Camb) 2017; 53:11338-11341. [DOI: 10.1039/c7cc06041f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel well-defined supported bipodal molybdenum alkyl oxo species for “modelling MoO3/SiO2 industrial catalysts” that efficiently catalyzes olefin metathesis has been unveiled.
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Affiliation(s)
- Nicolas Merle
- Laboratoire de Chimie
- Catalyse
- Polymères et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - Frédéric Le Quéméner
- Laboratoire de Chimie
- Catalyse
- Polymères et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - Samir Barman
- Physical Sciences and Engineering
- KAUST Catalysis Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
| | - Manoja K. Samantaray
- Physical Sciences and Engineering
- KAUST Catalysis Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
| | - Kai C. Szeto
- Laboratoire de Chimie
- Catalyse
- Polymères et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - Aimery De Mallmann
- Laboratoire de Chimie
- Catalyse
- Polymères et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - Mostafa Taoufik
- Laboratoire de Chimie
- Catalyse
- Polymères et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - Jean-Marie Basset
- Physical Sciences and Engineering
- KAUST Catalysis Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Saudi Arabia
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