1
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Fernando-López O, Trujillo-Hernández K, Moreno-Martínez VA, Martínez-Otero D, Bernabé-Pablo E, Huerta-Lavorie R, Jancik V. Molecular Alumo- and Gallosilicate Hydrides Functionalized with Terminal M(NR 2) 3 and Bridging M(NR 2) 2 (M = Ti, Zr, Hf; R = Me, Et) Moieties. Inorg Chem 2023; 62:14533-14545. [PMID: 37642323 DOI: 10.1021/acs.inorgchem.3c01413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
A general synthetic strategy for the systematic synthesis of group 4 MIV heterometallic complexes LMIII(H)(μ-O)Si(μ-O)(OtBu)2}nMIV(NR2)4-n (L = {[HC{C(Me)N(2,6-iPr2C6H3)}2; MIII = Al or Ga; n = 1 or 2; MIV = Ti, Zr, Hf; R = Me, Et), based on alumo- or gallosilicate hydride ligands bearing a Si-OH moiety, is presented. The challenging isolation of these metalloligands involved two strategies. On the one hand, the acid-base reaction of LAlH2 with (HO)2Si(OtBu)2 yielded LAlH(μ-O)Si(OH)(OtBu)2 (1), while on the other hand, the oxidative addition of (HO)2Si(OtBu)2 to LGa produced the gallium analog (2). These metalloligands successfully stabilized two hydrogen atoms with different acid-base properties (MIII-H and SiO-H) in the same molecule. Reactivity studies between 1 and 2 and group 4 amides MIV(NR2)4 (MIV = Ti, Zr, Hf; R = Me, Et) and tuning the reactions conditions and stoichiometry led to isolation and structural characterization of heterometallic complexes 3-11 with a 1:1 or 2:1 metalloligand/MIV ratio. Notably, some of these molecular heterometallic silicate complexes stabilize for the first time terminal (O3Si-O-)MIV(NR2)3 moieties known from single-site silica-grafted species. Furthermore, the aluminum-containing heterometallic complexes possess Al-H vibrational energies similar to those reported for modified alumina surfaces, which makes them potentially suitable models for the proposed MIV species grafted onto silica/alumina surfaces with hydride and dihydride architectures.
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Affiliation(s)
- Oscar Fernando-López
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Karla Trujillo-Hernández
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
| | - Víctor Augusto Moreno-Martínez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Diego Martínez-Otero
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Erandi Bernabé-Pablo
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Raúl Huerta-Lavorie
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
| | - Vojtech Jancik
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km. 14.5, Toluca, Estado de México 50200, México
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México 04510, México
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2
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Nifant’ev IE, Komarov PD, Kostomarova OD, Kolosov NA, Ivchenko PV. MAO- and Borate-Free Activating Supports for Group 4 Metallocene and Post-Metallocene Catalysts of α-Olefin Polymerization and Oligomerization. Polymers (Basel) 2023; 15:3095. [PMID: 37514483 PMCID: PMC10384419 DOI: 10.3390/polym15143095] [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: 06/13/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Modern industry of advanced polyolefins extensively uses Group 4 metallocene and post-metallocene catalysts. High-throughput polyolefin technologies demand the use of heterogeneous catalysts with a given particle size and morphology, high thermal stability, and controlled productivity. Conventional Group 4 metal single-site heterogeneous catalysts require the use of high-cost methylalumoxane (MAO) or perfluoroaryl borate activators. However, a number of inorganic phases, containing highly acidic Lewis and Brønsted sites, are able to activate Group 4 metal pre-catalysts using low-cost and affordable alkylaluminums. In the present review, we gathered comprehensive information on MAO- and borate-free activating supports of different types and discussed the surface nature and chemistry of these phases, examples of their use in the polymerization of ethylene and α-olefins, and prospects of the further development for applications in the polyolefin industry.
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Affiliation(s)
- Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
| | | | - Nikolay A. Kolosov
- NIOST LLC, Kuzovlevsky Tr. 2-270, 634067 Tomsk, Russia; (O.D.K.); (N.A.K.)
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Av. 29, 119991 Moscow, Russia; (I.E.N.); (P.D.K.)
- Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
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3
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Yaacoub L, Dutta I, Werghi B, Chen BWJ, Zhang J, Hamad EA, Ling Ang EP, Pump E, Sedjerari AB, Huang KW, Basset JM. Formic Acid Dehydrogenation via an Active Ruthenium Pincer Catalyst Immobilized on Tetra-Coordinated Aluminum Hydride Species Supported on Fibrous Silica Nanospheres. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Layal Yaacoub
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Indranil Dutta
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Baraa Werghi
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Benjamin W. J. Chen
- Agency for Science, Technology, and Research, Institute of High Performance Computing, 1 Fusionopolis Way, #16−16 Connexis, Singapore 138632, Singapore
| | - Jia Zhang
- Agency for Science, Technology, and Research, Institute of High Performance Computing, 1 Fusionopolis Way, #16−16 Connexis, Singapore 138632, Singapore
| | - Edy Abou Hamad
- Imaging and Characterization Department, KAUST Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Eleanor Pei Ling Ang
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Eva Pump
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Anissa Bendjeriou Sedjerari
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Kuo-Wei Huang
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Agency for Science, Technology, and Research, Institute of Materials Research and Engineering and Institute of Sustainability for Chemicals, Energy and Environment, Singapore 138634, Singapore
| | - Jean-Marie Basset
- Division of Physical Science and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Institut de Recherche de Chimie Paris, 11 Rue Pierre et Marie Curie, Cedex 05 75231, Paris
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4
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Zhao Q, Xu Y, Greeley J, Savoie BM. Deep reaction network exploration at a heterogeneous catalytic interface. Nat Commun 2022; 13:4860. [PMID: 35982057 PMCID: PMC9388529 DOI: 10.1038/s41467-022-32514-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/03/2022] [Indexed: 11/09/2022] Open
Abstract
Characterizing the reaction energies and barriers of reaction networks is central to catalyst development. However, heterogeneous catalytic surfaces pose several unique challenges to automatic reaction network characterization, including large sizes and open-ended reactant sets, that make ad hoc network construction the current state-of-the-art. Here, we show how automated network exploration algorithms can be adapted to the constraints of heterogeneous systems using ethylene oligomerization on silica-supported single-site Ga3+ as a model system. Using only graph-based rules for exploring the network and elementary constraints based on activation energy and size for identifying network terminations, a comprehensive reaction network is generated and validated against standard methods. The algorithm (re)discovers the Ga-alkyl-centered Cossee-Arlman mechanism that is hypothesized to drive major product formation while also predicting several new pathways for producing alkanes and coke precursors. These results demonstrate that automated reaction exploration algorithms are rapidly maturing towards general purpose capability for exploratory catalytic applications.
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Affiliation(s)
- Qiyuan Zhao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Yinan Xu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Jeffrey Greeley
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47906, USA.
| | - Brett M Savoie
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47906, USA.
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5
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Kanbur U, Zang G, Paterson AL, Chatterjee P, Hackler RA, Delferro M, Slowing II, Perras FA, Sun P, Sadow AD. Catalytic carbon-carbon bond cleavage and carbon-element bond formation give new life for polyolefins as biodegradable surfactants. Chem 2021. [DOI: 10.1016/j.chempr.2021.03.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Vancompernolle T, Merle N, Capet F, Del Rosal I, Laurent M, Delevoye L, Pourpoint F, Gauvin RM. Grafting of a new bis-silylamido aluminum species on silica: insight from solid-state NMR into interactions with the surface. Dalton Trans 2019; 48:5243-5252. [PMID: 30924489 DOI: 10.1039/c9dt00845d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new bisamido aluminum species [AlCl{N(SiMe3)2}2(THF)] (1) was prepared and fully characterized by 27Al and 35Cl solid-state NMR, along with X-ray diffraction studies. 1 was grafted on silica partially dehydroxylated at 700 °C, affording silica-supported Al species. The resulting material (2) was characterized by IR, elemental analysis and 1H, 13C and 27Al solid-state MAS NMR. The 1D and 2D 27Al MAS NMR studies showed the occurrence of two types of species, where the Al center adopts a tetracoordinated coordination sphere, with as an additional coordinated Lewis base, either a THF ligand or a silica-surface siloxane moiety. DFT calculations allowed understanding the grafting mechanism and the spectroscopic properties of the material.
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Affiliation(s)
- Tom Vancompernolle
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France.
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7
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Werghi B, Bendjeriou‐Sedjerari A, Jedidi A, Morlanes N, Abou‐Hamad E, Bhatte K, Guan E, Ma T, Aguilar‐Tapia A, Ould‐Chikh S, Cavallo L, Gates BC, Basset J. Tungsten Catalyst Incorporating a Well‐Defined Tetracoordinated Aluminum Surface Ligand for Selective Metathesis of Propane, [(≡Si−O−Si≡)(≡Si−O−)
2
Al−O−W(≡C
t
Bu) (H)
2
]. ChemCatChem 2018. [DOI: 10.1002/cctc.201801779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Baraa Werghi
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | | | - Abdesslem Jedidi
- Department of Chemistry Faculty of Science King Abdulaziz University (KAU) Jeddah 21589 Kingdom of Saudi Arabia
| | - Natalia Morlanes
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Edy Abou‐Hamad
- King Abdullah University of Science and Technology(KAUST) Core Labs Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Kushal Bhatte
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Erjia Guan
- Department of Materials Science and Engineering University of California Davis CA 95616 USA
| | - Tao Ma
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | | | - Samy Ould‐Chikh
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Luigi Cavallo
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Bruce C. Gates
- Department of Chemical Engineering University of California Davis CA 95616 USA
| | - Jean‐Marie Basset
- University of Science and Technology 4700 King Abdullah Thuwal 23955-6900 Kingdom of Saudi Arabia
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8
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Werghi B, Pump E, Tretiakov M, Abou-Hamad E, Gurinov A, Doggali P, Anjum DH, Cavallo L, Bendjeriou-Sedjerari A, Basset JM. Exploiting the interactions between the ruthenium Hoveyda-Grubbs catalyst and Al-modified mesoporous silica: the case of SBA15 vs. KCC-1. Chem Sci 2018; 9:3531-3537. [PMID: 29780484 PMCID: PMC5934738 DOI: 10.1039/c7sc05200f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/05/2018] [Indexed: 11/21/2022] Open
Abstract
2nd generation Hoveyda–Grubbs catalyst immobilized onto well-ordered 2D hexagonal (SBA15) and 3D fibrous (KCC-1) mesostructured silica displaying tetra-coordinated Al–H via Surface Organometallic Chemistry (SOMC).
Immobilization of the 2nd generation Hoveyda–Grubbs catalyst HG-II onto well-ordered 2D hexagonal (SBA15) and 3D fibrous (KCC-1) mesostructured silica, which contained tetra-coordinated Al, has been investigated through the Surface Organometallic Chemistry (SOMC) methodology. The main interest of this study lies in the peculiarity of the silica supports, which display a well-defined tetrahedral aluminum hydride site displaying a strong Lewis acid character, [(
Created by potrace 1.16, written by Peter Selinger 2001-2019
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Si–O–Si
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
)(
Created by potrace 1.16, written by Peter Selinger 2001-2019
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Si–O–)2Al–H]. The resulting supported Hoveyda–Grubbs catalysts have been fully characterized by advanced solid state characterization techniques (FT-IR, 1H and 13C solid state NMR, DNP-SENS, EF-TEM…). Together with DFT calculations, the immobilization of HG-II does not occur through the formation of a covalent bond between the complex and the Al-modified mesoporous silica as expected, but through an Al···Cl–[Ru]-coordination. It is not surprising that in functionalized olefin metathesis of diethyldiallyl malonate, DEDAM (liquid phase), leaching of the catalyst is observed which is not the case in non-functionalized olefin metathesis of propene (gas phase). Besides, the results obtained in propene metathesis with HG-II immobilized either on SBA15 (dpore = 6 nm) or KCC-1 (dpore = 4 or 8 nm) highlight the importance of the accessibility of the catalytic site. Therefore, we demonstrate that KCC-1 is a promising and suitable 3D mesoporous support to overcome the diffusion of reactants into the porous network of heterogeneous catalysts.
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Affiliation(s)
- Baraa Werghi
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Eva Pump
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Mykyta Tretiakov
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Edy Abou-Hamad
- King Abdullah University of Science and Technology (KAUST) , Core Labs , Thuwal , 23955-6900 , Saudi Arabia
| | - Andrei Gurinov
- King Abdullah University of Science and Technology (KAUST) , Core Labs , Thuwal , 23955-6900 , Saudi Arabia
| | - Pradeep Doggali
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Dalaver H Anjum
- King Abdullah University of Science and Technology (KAUST) , Core Labs , Thuwal , 23955-6900 , Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Anissa Bendjeriou-Sedjerari
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
| | - Jean-Marie Basset
- KAUST Catalysis Center (KCC) , King Abdullah University of Science and Technology , Thuwal , 23955-6900 , Saudi Arabia . ;
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9
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Högerl MP, Serena Goh LM, Abou-Hamad E, Barman S, Dachwald O, Pasha FA, Pelletier J, Köhler K, D'Elia V, Cavallo L, Basset JM. SOMC grafting of vanadium oxytriisopropoxide (VO(OiPr)3) on dehydroxylated silica; analysis of surface complexes and thermal restructuring mechanism. RSC Adv 2018; 8:20801-20808. [PMID: 35542331 PMCID: PMC9080862 DOI: 10.1039/c8ra02419g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/30/2018] [Indexed: 11/21/2022] Open
Abstract
VO(OiPr)3 was grafted on highly dehydroxylated silica by a surface organometallic chemistry approach and its thermal evolution was analyzed with support of DFT calculations.
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10
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Grekov D, Vancompernolle T, Taoufik M, Delevoye L, Gauvin RM. Solid-state NMR of quadrupolar nuclei for investigations into supported organometallic catalysts: scope and frontiers. Chem Soc Rev 2018; 47:2572-2590. [DOI: 10.1039/c7cs00682a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scope, limitations and outlooks of half-integer quadrupolar nuclei NMR as applied to supported catalysts characterization are discussed.
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Affiliation(s)
- D. Grekov
- Univ. Lille
- CNRS
- Centrale Lille
- ENSCL
- Univ. Artois
| | | | - M. Taoufik
- Laboratoire de Chimie
- Catalyse
- Polyméres et Procédés
- UMR 5265 CNRS/ESCPE-Lyon/UCBL
- ESCPE Lyon
| | - L. Delevoye
- Univ. Lille
- CNRS
- Centrale Lille
- ENSCL
- Univ. Artois
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11
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Venkatesh A, Hanrahan MP, Rossini AJ. Proton detection of MAS solid-state NMR spectra of half-integer quadrupolar nuclei. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2017; 84:171-181. [PMID: 28392024 DOI: 10.1016/j.ssnmr.2017.03.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/25/2017] [Accepted: 03/28/2017] [Indexed: 05/09/2023]
Abstract
Fast magic angle spinning (MAS) and proton detection has found widespread application to enhance the sensitivity of solid-state NMR experiments with spin-1/2 nuclei such as 13C, 15N and 29Si, however, this approach is not yet routinely applied to half-integer quadrupolar nuclei. Here we have investigated the feasibility of using fast MAS and proton detection to enhance the sensitivity of solid-state NMR experiments with half-integer quadrupolar nuclei. The previously described dipolar hetero-nuclear multiple quantum correlation (D-HMQC) and dipolar refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) pulse sequences were used for proton detection of half-integer quadrupolar nuclei. Quantitative comparisons of signal-to-noise ratios and the sensitivity of proton detected D-HMQC and D-RINEPT and direct detection spin echo and quadrupolar Carr-Purcell Meiboom-Gill (QCPMG) solid-state NMR spectra, demonstrate that one dimensional proton detected experiments can provide sensitivity similar to or exceeding that obtainable with direct detection QCPMG experiments. 2D D-HMQC and D-RINEPT experiments provide less sensitivity than QCPMG experiments but proton detected 2D hetero-nuclear correlation solid-state NMR spectra of half-integer nuclei can still be acquired in about the same time as a 1D spin echo spectrum. Notably, the rarely used D-RINEPT pulse sequence is found to provide similar, or better sensitivity than D-HMQC in some cases. Proton detected D-RINEPT benefits from the short longitudinal relaxation times (T1) normally associated with half-integer quadrupolar nuclei, it can be combined with existing signal enhancement methods for quadrupolar nuclei, and t1-noise in the indirect dimension can easily be removed by pre-saturation of the 1H nuclei. The rapid acquisition of proton detected 2D HETCOR solid-state NMR spectra of a range of half-integer quadrupolar nuclei such as 17O, 27Al, 35Cl and 71Ga is demonstrated.
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Affiliation(s)
- Amrit Venkatesh
- Iowa State University, Department of Chemistry, Ames, IA 50011, USA; US DOE Ames Laboratory, Ames, IA 50011, USA
| | - Michael P Hanrahan
- Iowa State University, Department of Chemistry, Ames, IA 50011, USA; US DOE Ames Laboratory, Ames, IA 50011, USA
| | - Aaron J Rossini
- Iowa State University, Department of Chemistry, Ames, IA 50011, USA; US DOE Ames Laboratory, Ames, IA 50011, USA.
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12
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Sauter DW, Chiari V, Aykac N, Bouaouli S, Perrin L, Delevoye L, Gauvin RM, Szeto KC, Boisson C, Taoufik M. Preparation of monopodal and bipodal aluminum surface species by selective protonolysis of highly reactive [AlH3(NMe2Et)] on silica. Dalton Trans 2017; 46:11547-11551. [DOI: 10.1039/c7dt02575k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of [AlH3(NMe2Et)] with silica treated at 200 °C leads to a well-defined bipodal aluminum hydride while with silica treated at 700 °C a mixture of mono- and bi-podal aluminum hydrides is obtained.
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Affiliation(s)
- D. W. Sauter
- Université de Lyon
- Univ. Lyon 1
- CPE Lyon
- CNRS UMR 5265
- Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)
| | - V. Chiari
- Université de Lyon
- Univ. Lyon 1
- CPE Lyon
- CNRS UMR 5265
- Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)
| | - N. Aykac
- Université Lyon 1
- CNRS UMR 5246
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
- Villeurbanne
- France
| | - S. Bouaouli
- Université Lyon 1
- CNRS UMR 5246
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
- Villeurbanne
- France
| | - L. Perrin
- Université Lyon 1
- CNRS UMR 5246
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
- Villeurbanne
- France
| | - L. Delevoye
- Univ. Lille
- CNRS
- Centrale Lille
- ENSCL
- Univ. Artois
| | | | - K. C. Szeto
- Université de Lyon
- Univ. Lyon 1
- CPE Lyon
- CNRS UMR 5265
- Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)
| | - C. Boisson
- Université de Lyon
- Univ. Lyon 1
- CPE Lyon
- CNRS UMR 5265
- Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)
| | - M. Taoufik
- Université de Lyon
- Univ. Lyon 1
- CPE Lyon
- CNRS UMR 5265
- Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2)
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13
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Werghi B, Bendjeriou-Sedjerari A, Jedidi A, Abou-Hamad E, Cavallo L, Basset JM. Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality! Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00454] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Baraa Werghi
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Anissa Bendjeriou-Sedjerari
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Abdesslem Jedidi
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Edy Abou-Hamad
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Jean-Marie Basset
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
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14
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Copéret C, Estes DP, Larmier K, Searles K. Isolated Surface Hydrides: Formation, Structure, and Reactivity. Chem Rev 2016; 116:8463-505. [DOI: 10.1021/acs.chemrev.6b00082] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P. Estes
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Kim Larmier
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Keith Searles
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
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15
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Hamzaoui B, Pelletier JDA, Abou-Hamad E, Chen Y, El Eter M, Chermak E, Cavallo L, Basset JM. Solid-State NMR and DFT Studies on the Formation of Well-Defined Silica-Supported Tantallaaziridines: From Synthesis to Catalytic Application. Chemistry 2016; 22:3000-8. [DOI: 10.1002/chem.201504439] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Bilel Hamzaoui
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Jérémie D. A. Pelletier
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Edy Abou-Hamad
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Yin Chen
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Mohamed El Eter
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Edrisse Chermak
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
| | - Jean-Marie Basset
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal, 23955-6900 Saudi Arabia
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16
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Copéret C, Comas-Vives A, Conley MP, Estes DP, Fedorov A, Mougel V, Nagae H, Núñez-Zarur F, Zhizhko PA. Surface Organometallic and Coordination Chemistry toward Single-Site Heterogeneous Catalysts: Strategies, Methods, Structures, and Activities. Chem Rev 2016; 116:323-421. [PMID: 26741024 DOI: 10.1021/acs.chemrev.5b00373] [Citation(s) in RCA: 490] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P Estes
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Haruki Nagae
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,Department of Chemistry, Graduate School of Engineering Science, Osaka University, CREST , Toyonaka, Osaka 560-8531, Japan
| | - Francisco Núñez-Zarur
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Pavel A Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov str. 28, 119991 Moscow, Russia
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