1
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Dombrowski JP, Kalendra V, Ziegler MS, Lakshmi KV, Bell AT, Tilley TD. M-Ge-Si thermolytic molecular precursors and models for germanium-doped transition metal sites on silica. Dalton Trans 2024; 53:7340-7349. [PMID: 38602311 DOI: 10.1039/d4dt00644e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
The synthesis, thermolysis, and surface organometallic chemistry of thermolytic molecular precursors based on a new germanosilicate ligand platform, -OGe[OSi(OtBu)3]3, is described. Use of this ligand is demonstrated with preparation of complexes containing the first-row transition metals Cr, Mn, and Fe. The thermolysis and grafting behavior of the synthesized complexes, Fe{OGe[OSi(OtBu)3]3}2 (FeGe), Mn{OGe[OSi(OtBu)3]3}2(THF)2 (MnGe) and Cr{OGe[OSi(OtBu)3]3}2(THF)2 (CrGe), was evaluated using a combination of thermogravimetric analysis; nuclear magnetic resonance (NMR), ultraviolet-visible (UV-Vis), and electron paramagnetic resonance (EPR) spectroscopies; and single-crystal X-ray diffraction (XRD). Grafting of the precursors onto SBA-15 mesoporous silica and subsequent calcination in air led to substantial changes in transition metal coordination environments and oxidation states, the implications of which are discussed in the context of low-coordinate and low oxidation state thermolytic molecular precursors.
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Affiliation(s)
- James P Dombrowski
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
| | - Vidmantas Kalendra
- Department of Chemistry and Chemical Biology and The Baruch '60 Center for Biochemical Solar Energy Research, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Micah S Ziegler
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
| | - K V Lakshmi
- Department of Chemistry and Chemical Biology and The Baruch '60 Center for Biochemical Solar Energy Research, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Alexis T Bell
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, 201 Gilman Hall, Berkeley, CA, USA
| | - T Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
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2
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Talukdar H, Saikia G, Das A, Sultana SY, Islam NS. Organic-Solvent-Free Oxidation of Styrene, Phenol and Sulfides with H2O2 over Eco-Friendly Niobium and Tantalum Based Heterogeneous Catalysts. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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3
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Study on the epoxidation of olefins with H2O2 catalyzed by biquaternary ammonium phosphotungstic acid. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Zhang Z, Li H, Wu D, Zhang L, Li J, Xu J, Lin S, Datye AK, Xiong H. Coordination structure at work: Atomically dispersed heterogeneous catalysts. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214469] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Smeets V, Gaigneaux EM, Debecker DP. Titanosilicate Epoxidation Catalysts: A Review of Challenges and Opportunities. ChemCatChem 2022. [DOI: 10.1002/cctc.202101132] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Valentin Smeets
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
| | - Eric M. Gaigneaux
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
| | - Damien P. Debecker
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1, Box L4.01.09 1348 Louvain-la-Neuve Belgium
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6
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The interaction of molybdenum and titanium in mesoporous materials for olefin epoxidation. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-021-02147-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Zhang Y, Yue X, Liang C, Zhao J, Yu W, Zhang P. Photo-induced oxidative cleavage of C-C double bonds of olefins in water. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Mesoporous Methyl-Functionalized Titanosilicate Produced by Aerosol Process for the Catalytic Epoxidation of Olefins. Catalysts 2021. [DOI: 10.3390/catal11020196] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Titanosilicates (Ti-SiO2) are well-known catalysts for the epoxidation of olefins. Isolated Ti inserted in the silica framework in tetrahedral coordination are the active species. Recently, adjusting the hydrophobic/hydrophilic balance of such catalysts’ surfaces has appeared as a promising tool to further boost their performance. However, adjusting the hydrophobic/hydrophilic balance via a one-pot classical sol-gel generally leads to a decrease in the Ti dispersion and/or collapse of the pore network. To overcome this limitation, hydrophobic mesoporous Ti-SiO2 were here synthesized by aerosol-assisted one-pot sol–gel, which allowed the simultaneous control of their Ti loading, degree of methyl-functionalization, and textural properties. Methyl-functionalization was achieved by a partial substitution of tetraethoxy silane (TEOS) by methyltriethoxy silane (MTES) in different ratios. Solid-state 29Si-NMR, FTIR, TGA, and vapor-phase water adsorption showed that methyl moieties were effectively incorporated, conferring a hydrophobic property to the Ti-SiO2 catalysts. ICP-AES, DRUV, XPS, and N2 physisorption demonstrated that Ti dispersion and textural properties were both successfully preserved upon the incorporation of the methyl moieties. In the epoxidation of cyclooctene with tert-butyl hydroperoxide as oxidant, the hydrophobic Ti-SiO2 showed higher catalytic performance than pristine Ti-SiO2 prepared without MTES. In addition to disentangling the positive effect of adjusting the hydrophobic/hydrophilic balance of epoxidation catalysts on their performance, this contribution highlights the advantages of the aerosol procedure to synthesize mesoporous functionalized catalysts with very high dispersion of active sites.
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9
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Saikia G, Talukdar H, Ahmed K, Gour NK, Islam NS. Tantalum( v) peroxido complexes as phosphatase inhibitors: a comparative study vis-a-vis peroxidovanadates. NEW J CHEM 2021. [DOI: 10.1039/d1nj01005k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Peroxido Ta(v) complexes are found to be more effective as inhibitors of wheat thylakoid acid phosphatase vis-à-vis their V containing analogues. In addition, these compounds showed unique resistance towards degradation in the presence of catalase.
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Affiliation(s)
- Gangutri Saikia
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
| | - Hiya Talukdar
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
| | - Kabirun Ahmed
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
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10
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Witzke RJ, Chapovetsky A, Conley MP, Kaphan DM, Delferro M. Nontraditional Catalyst Supports in Surface Organometallic Chemistry. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03350] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan J. Witzke
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Alon Chapovetsky
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew P. Conley
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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11
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Bregante DT, Tan JZ, Schultz RL, Ayla EZ, Potts DS, Torres C, Flaherty DW. Catalytic Consequences of Oxidant, Alkene, and Pore Structures on Alkene Epoxidations within Titanium Silicates. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02183] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jun Zhi Tan
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Rebecca L. Schultz
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - E. Zeynep Ayla
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David S. Potts
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Chris Torres
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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12
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Du L, Wang Z, Wu J. Iodobenzene-catalyzed oxidative cleavage of olefins to carbonyl compounds. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Zhu Z, Ma H, Xu H, Wang B, Wu P, Lü H. Oxidative desulfurization of model oil over Ta-Beta zeolite synthesized via structural reconstruction. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122458. [PMID: 32155526 DOI: 10.1016/j.jhazmat.2020.122458] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
As to metallosilicate zeolites, ions with larger size such as Ta5+ in the gels greatly retarded their crystallization during the hydrothermal synthesis, affording long-winded synthesis periods, up-limited framework-substituted metal contents, or even frustrated outcome. An efficient hydrothermal synthesis strategy for metallosilicate, in this case of Ta framework-substituted *BEA zeolite, via structural reconstruction was proposed to stride the gap. The Ta content in our developed Ta-Beta-Re-50 zeolite achieved up to 5.48 % (Si/Ta = 52), breaking through the limitation of Ta contents for conventional method (Si/Ta > 100). Additionally, this Ta-Beta-Re zeolite possessed nanosized crystals (20-40 nm) and short crystallization time (8 h), significantly improving space-time yields of practical zeolite production. Through spectroscopic study, it was confirmed that the existence of zeolite structural units intensively facilitated the formation of nucleation and crystal growth. This innovative Ta-Beta zeolite demonstrated high catalytic performances for oxidation desulfurization, far outperforming traditional fluoride-mediated Ta-Beta-F, which was ascribed to its excellent diffusion properties and incredible high isolated Ta contents. Additionally, the catalytic performance of Ta-Beta-Re could be regenerated after simple calcination and the deactivation may be caused by pore blocking of organics. This work provides a new method for rationally design and construction of metallosilicate materials with high activity for catalytic oxidation applications, which can bridge the conceptual and technical gap between periodic trends and zeolite material synthesis.
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Affiliation(s)
- Zhiguo Zhu
- Green Chemistry Centre, College of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, Shandong, China
| | - Haikuo Ma
- Green Chemistry Centre, College of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, Shandong, China
| | - Hao Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Rd. 3663, Shanghai, 200062, China
| | - Bo Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Peng Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Rd. 3663, Shanghai, 200062, China.
| | - Hongying Lü
- Green Chemistry Centre, College of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, Shandong, China.
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14
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Vandervelden CA, Khan SA, Scott SL, Peters B. Site-averaged kinetics for catalysts on amorphous supports: an importance learning algorithm. REACT CHEM ENG 2020. [DOI: 10.1039/c9re00356h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We combine importance sampling and kernel regression techniques to efficiently predict site-averaged kinetics for isolated catalyst sites on amorphous supports.
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Affiliation(s)
| | - Salman A. Khan
- Department of Chemical Engineering
- University of California
- Santa Barbara
- USA
| | - Susannah L. Scott
- Department of Chemical Engineering
- University of California
- Santa Barbara
- USA
- Department of Chemistry
| | - Baron Peters
- Department of Chemical and Biomolecular Engineering
- University of Illinois at Urbana-Champaign
- Urbana
- USA
- Department of Chemistry
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15
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Ag- and Cu-Promoted Mesoporous Ta-SiO2 Catalysts Prepared by Non-Hydrolytic Sol-Gel for the Conversion of Ethanol to Butadiene. Catalysts 2019. [DOI: 10.3390/catal9110920] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The direct catalytic conversion of bioethanol to butadiene, also known as the Lebedev process, is one of the most promising solution to replace the petro-based production of this important bulk chemical. Considering the intricate reaction mechanism—where a combination of acid-catalyzed dehydration reactions and metal-catalyzed dehydrogenation have to take place simultaneously—tailor-made bifunctional catalysts are required. We propose to use non-hydrolytic sol-gel (NHSG) chemistry to prepare mesoporous Ta-SiO2 materials which are further promoted by Ag via impregnation. An acetamide elimination route is presented, starting from silicon tetraacetate and pentakis(dimethylamido)tantalum(V), in the presence of a Pluronic surfactant. The catalysts display advantageous texture, with specific surface area in the 600–1000 m² g−1 range, large pore volume (0.6–1.0 mL g−1), an average pore diameter of 4 nm and only a small contribution from micropores. Using an array of characterization techniques, we show that NHSG allows achieving a high degree of dispersion of tantalum, mainly incorporated as single sites in the silica matrix. The presence of these monomeric TaOx active sites is responsible for the much higher dehydration ability, as compared to the corresponding catalyst prepared by impregnation of Ta onto a pristine silica support. We attempt to optimize the butadiene yield by changing the relative proportion of Ta and Ag and by tuning the space velocity. We also demonstrate that Ag or Cu can be introduced directly in one step, during the NHSG process. Copper doping is shown to be much more efficient than silver doping to guide the reaction towards the production of butadiene.
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16
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Yu W, Zhao Z. Catalyst-Free Selective Oxidation of Diverse Olefins to Carbonyls in High Yield Enabled by Light under Mild Conditions. Org Lett 2019; 21:7726-7730. [PMID: 31524410 DOI: 10.1021/acs.orglett.9b02569] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The selective oxidation of olefins, in particular, aromatic olefins to carbonyls, is of significance in organic synthesis. In general, stoichiometric toxic oxidants or a high-cost catalyst is required. Herein we report a novel and practical light-enabled protocol for the synthesis of carbonlys in high yield through a catalyst-free oxidation of olefins using H2O2 as a clean oxidant. A broad scope of carbonyls can be synthesized in high yield, and no catalyst or toxic oxidant is required.
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Affiliation(s)
- Weiwei Yu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
| | - Zhongkui Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
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17
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Smuszkiewicz A, López-Sanz J, Sobczak I, Martín-Aranda RM, Ziolek M, Pérez-Mayoral E. Tantalum vs Niobium MCF nanocatalysts in the green synthesis of chromene derivatives. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Bregante DT, Johnson AM, Patel AY, Ayla EZ, Cordon MJ, Bukowski BC, Greeley J, Gounder R, Flaherty DW. Cooperative Effects between Hydrophilic Pores and Solvents: Catalytic Consequences of Hydrogen Bonding on Alkene Epoxidation in Zeolites. J Am Chem Soc 2019; 141:7302-7319. [DOI: 10.1021/jacs.8b12861] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Alayna M. Johnson
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Ami Y. Patel
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - E. Zeynep Ayla
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Michael J. Cordon
- Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Brandon C. Bukowski
- Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jeffrey Greeley
- Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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19
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Ma W, Qiao Y, Theyssen N, Zhou Q, Li D, Ding B, Wang D, Hou Z. A mononuclear tantalum catalyst with a peroxocarbonate ligand for olefin epoxidation in compressed CO2. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00056a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A mononuclear tantalum complex bonded to a peroxocarbonate ligand has been proved to be particularly important in the epoxidation reactions.
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Affiliation(s)
- Wenbao Ma
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Yunxiang Qiao
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - Nils Theyssen
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - Qingqing Zhou
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Difan Li
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Bingjie Ding
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
| | - Dongqi Wang
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- People's Republic of China
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20
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Saikia G, Ahmed K, Rajkhowa C, Sharma M, Talukdar H, Islam NS. Polymer immobilized tantalum( v)–amino acid complexes as selective and recyclable heterogeneous catalysts for oxidation of olefins and sulfides with aqueous H 2O 2. NEW J CHEM 2019. [DOI: 10.1039/c9nj04180j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer supported peroxotantalate based heterogeneous catalysts served as highly efficient, selective and recyclable catalysts for alkene epoxidation and sulfide oxidation with green oxidant aqueous H2O2 under mild reaction conditions.
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Affiliation(s)
- Gangutri Saikia
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Kabirun Ahmed
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | | | - Mitu Sharma
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Hiya Talukdar
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
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21
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Bregante DT, Patel AY, Johnson AM, Flaherty DW. Catalytic thiophene oxidation by groups 4 and 5 framework-substituted zeolites with hydrogen peroxide: Mechanistic and spectroscopic evidence for the effects of metal Lewis acidity and solvent Lewis basicity. J Catal 2018. [DOI: 10.1016/j.jcat.2018.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Ma W, Yuan H, Wang H, Zhou Q, Kong K, Li D, Yao Y, Hou Z. Identifying Catalytically Active Mononuclear Peroxoniobate Anion of Ionic Liquids in the Epoxidation of Olefins. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04443] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenbao Ma
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Haiyang Yuan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Qingqing Zhou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Kang Kong
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Difan Li
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Yefeng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
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23
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Bregante DT, Thornburg NE, Notestein JM, Flaherty DW. Consequences of Confinement for Alkene Epoxidation with Hydrogen Peroxide on Highly Dispersed Group 4 and 5 Metal Oxide Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03986] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Nicholas E. Thornburg
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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24
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Zwaschka G, Rondelli M, Krause M, Rötzer MD, Hedhili MN, Heiz U, Basset JM, Schweinberger FF, D'Elia V. Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene. NEW J CHEM 2018. [DOI: 10.1039/c7nj04275b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The preparation of organic ligand-free, isolated and catalytically active tantalum oxide complexes (Ta1) and small clusters (Tan>1) on flat silicate support was accomplished by ultra-high vacuum (UHV) techniques followed by oxidation in air.
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Affiliation(s)
- G. Zwaschka
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - M. Rondelli
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - M. Krause
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - M. D. Rötzer
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - M. N. Hedhili
- King Abdullah University of Science and Technology (KAUST)
- Imaging and Characterization Core Lab
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - U. Heiz
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - J.-M. Basset
- King Abdullah University of Science and Technology (KAUST)
- Kaust Catalysis Center (KCC)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - F. F. Schweinberger
- Technical University of Munich
- Catalysis Research Center and Chemistry Department
- Chair of Physical Chemistry
- 85748 Garching
- Germany
| | - V. D'Elia
- King Abdullah University of Science and Technology (KAUST)
- Kaust Catalysis Center (KCC)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
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25
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Samantaray MK, Pump E, Bendjeriou-Sedjerari A, D’Elia V, Pelletier JDA, Guidotti M, Psaro R, Basset JM. Surface organometallic chemistry in heterogeneous catalysis. Chem Soc Rev 2018; 47:8403-8437. [DOI: 10.1039/c8cs00356d] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface organometallic chemistry has been reviewed with a special focus on environmentally relevant transformations (C–H activation, CO2conversion, oxidation).
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Affiliation(s)
- Manoja K. Samantaray
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Eva Pump
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | | | - Valerio D’Elia
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology
- WangChan
- Thailand
| | - Jérémie D. A. Pelletier
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
| | - Matteo Guidotti
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Rinaldo Psaro
- CNR – Institute of Molecular Sciences and Technologies
- 20133 Milano
- Italy
| | - Jean-Marie Basset
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC)
- Thuwal
- Saudi Arabia
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26
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Ivanchikova ID, Skobelev IY, Maksimchuk NV, Paukshtis EA, Shashkov MV, Kholdeeva OA. Toward understanding the unusual reactivity of mesoporous niobium silicates in epoxidation of C C bonds with hydrogen peroxide. J Catal 2017. [DOI: 10.1016/j.jcat.2017.09.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Thornburg NE, Notestein JM. Rate and Selectivity Control in Thioether and Alkene Oxidation with H
2
O
2
over Phosphonate‐Modified Niobium(V)–Silica Catalysts. ChemCatChem 2017. [DOI: 10.1002/cctc.201700526] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nicholas E. Thornburg
- Department of Chemical and Biological Engineering Northwestern University 2145 Sheridan Rd. Evanston IL 60208 USA
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering Northwestern University 2145 Sheridan Rd. Evanston IL 60208 USA
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28
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Fadhli M, Khedher I, Fraile JM. Comparison of Ta–MCM-41 and Ti–MCM-41 as catalysts for the enantioselective epoxidation of styrene with TBHP. CR CHIM 2017. [DOI: 10.1016/j.crci.2017.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Li X. Comparative study of niobium-containing hexagonal mesoporous silicas prepared using different niobium sources. RUSS J APPL CHEM+ 2017. [DOI: 10.1134/s1070427217060179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Bregante DT, Flaherty DW. Periodic Trends in Olefin Epoxidation over Group IV and V Framework-Substituted Zeolite Catalysts: A Kinetic and Spectroscopic Study. J Am Chem Soc 2017; 139:6888-6898. [PMID: 28453262 DOI: 10.1021/jacs.7b01422] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Group IV and V framework-substituted zeolites have been used for olefin epoxidation reactions for decades, yet the underlying properties that determine the selectivities and turnover rates of these catalysts have not yet been elucidated. Here, a combination of kinetic, thermodynamic, and in situ spectroscopic measurements show that when group IV (i.e., Ti, Zr, and Hf) or V (i.e., Nb and Ta) transition metals are substituted into zeolite *BEA, the metals that form stronger Lewis acids give greater selectivities and rates for the desired epoxidation pathway and present smaller enthalpic barriers for both epoxidation and H2O2 decomposition reactions. In situ UV-vis spectroscopy shows that these group IV and V materials activate H2O2 to form pools of hydroperoxide, peroxide, and superoxide intermediates. Time-resolved UV-vis measurements and the isomeric distributions of Z-stilbene epoxidation products demonstrate that the active species for epoxidations on group IV and V transition metals are only M-OOH/-(O2)2- and M-(O2)- species, respectively. Mechanistic interpretations of kinetic data suggest that these group IV and V materials catalyze cyclohexene epoxidation and H2O2 decomposition through largely identical Eley-Rideal mechanisms that involve the irreversible activation of coordinated H2O2 followed by reaction with an olefin or H2O2. Epoxidation rates and selectivities vary over five- and two-orders of magnitude, respectively, among these catalysts and depend exponentially on the energy for ligand-to-metal charge transfer (LMCT) and the functional Lewis acid strength of the metal centers. Together, these observations show that more electrophilic active-oxygen species (i.e., lower-energy LMCT) are more reactive and selective for epoxidations of electron-rich olefins and explain why Ti-based catalysts have been identified as the most active among early transition metals for these reactions. Further, H2O2 decomposition (the undesirable reaction pathway) possesses a weaker dependence on Lewis acidity than epoxidation, which suggests that the design of catalysts with increased Lewis acid strength will simultaneously increase the reactivity and selectivity of olefin epoxidation.
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Affiliation(s)
- Daniel T Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - David W Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
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31
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Bregante DT, Priyadarshini P, Flaherty DW. Kinetic and spectroscopic evidence for reaction pathways and intermediates for olefin epoxidation on Nb in *BEA. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Guillo P, Lipschutz MI, Fasulo ME, Tilley TD. Tantalum–Polyhedral Oligosilsesquioxane Complexes as Structural Models and Functional Catalysts for Epoxidation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00020] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pascal Guillo
- 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
| | - Michael I. Lipschutz
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Meg E. Fasulo
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - T. Don Tilley
- 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
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33
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Thornburg NE, Nauert SL, Thompson AB, Notestein JM. Synthesis−Structure–Function Relationships of Silica-Supported Niobium(V) Catalysts for Alkene Epoxidation with H2O2. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01796] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicholas E. Thornburg
- Department of Chemical and
Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological
Institute E136, Evanston, Illinois 60208, United States
| | - Scott L. Nauert
- Department of Chemical and
Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological
Institute E136, Evanston, Illinois 60208, United States
| | - Anthony B. Thompson
- Department of Chemical and
Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological
Institute E136, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and
Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological
Institute E136, Evanston, Illinois 60208, United States
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34
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Li X, Zhang L, Gao H, Chen Q. Preparation, characterization, and catalytic performance of Ta-HMS mesoporous molecular sieve. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s003602441608032x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Pruski M, Sadow AD, Slowing II, Marshall CL, Stair P, Rodriguez J, Harris A, Somorjai GA, Biener J, Matranga C, Wang C, Schaidle JA, Beckham GT, Ruddy DA, Deutsch T, Alia SM, Narula C, Overbury S, Toops T, Bullock RM, Peden CHF, Wang Y, Allendorf MD, Nørskov J, Bligaard T. Virtual Special Issue on Catalysis at the U.S. Department of Energy’s National Laboratories. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Yong Wang
- Pacific Northwest National Laboratory
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36
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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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37
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Dombrowski JP, Johnson GR, Bell AT, Tilley TD. Ga[OSi(OtBu)3]3·THF, a thermolytic molecular precursor for high surface area gallium-containing silica materials of controlled dispersion and stoichiometry. Dalton Trans 2016; 45:11025-34. [DOI: 10.1039/c6dt01676f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ga[OSi(OtBu)3]3·THF was used as the first thermolytic single-source molecular precursor to generate gallium-containing silicas.
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Affiliation(s)
| | - Gregory R. Johnson
- Department of Chemical and Biomolecular Engineering
- University of California
- Berkeley
- Berkeley
- USA
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering
- University of California
- Berkeley
- Berkeley
- USA
| | - T. Don Tilley
- Department of Chemistry
- University of California
- Berkeley
- Berkeley
- USA
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38
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39
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Thornburg NE, Thompson AB, Notestein JM. Periodic Trends in Highly Dispersed Groups IV and V Supported Metal Oxide Catalysts for Alkene Epoxidation with H2O2. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01105] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nicholas E. Thornburg
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anthony B. Thompson
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and
Biological Engineering, Technological Institute E136, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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40
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Xu W, Yu B, Sun H, Yang J, Zhang Y, Wang Z, Chen X, Zhang G, Gao Z. The first montmorillonite-supported surface single-structure titanium complex: synthesis, characterization and catalytic activity in alkene epoxidation. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Bo Yu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Jindou Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Ying Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Zhenhua Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Xi Chen
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
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41
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Zhang Y, Ding L, Zhao W, Zhang Y, Han F, Feng Q, Song J, Li M, Du B, Wei Q. Hydrophobic bifunctionalized hexagonal mesoporous silicas as efficient adsorbents for the removal of Orange IV. RSC Adv 2014. [DOI: 10.1039/c4ra08632e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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42
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Cordeiro PJ, Guillo P, Spanjers CS, Chang JW, Lipschutz MI, Fasulo ME, Rioux RM, Tilley TD. Titanium–Germoxy Precursor Route to Germanium-Modified Epoxidation Catalysts with Enhanced Activity. ACS Catal 2013. [DOI: 10.1021/cs400529x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul J. Cordeiro
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Pascal Guillo
- 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
| | - Charles S. Spanjers
- Department
of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ji Woong Chang
- Department
of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Mike I. Lipschutz
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Meg E. Fasulo
- Department
of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Robert M. Rioux
- Department
of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - T. Don Tilley
- 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
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43
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Heterogenization of a molybdenum Schiff base complex as a magnetic nanocatalyst: An eco-friendly, efficient, selective and recyclable nanocatalyst for the oxidation of alkenes. CR CHIM 2013. [DOI: 10.1016/j.crci.2013.03.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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44
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Piquemal JY, Briot E, Brégeault JM. Preparation of materials in the presence of hydrogen peroxide: from discrete or “zero-dimensional” objects to bulk materials. Dalton Trans 2013; 42:29-45. [DOI: 10.1039/c2dt31660a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Guillo P, Fasulo ME, Lipschutz MI, Tilley TD. Synthesis and characterization of tantalum silsesquioxane complexes. Dalton Trans 2013; 42:1991-5. [DOI: 10.1039/c2dt32601a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Gao Q, Wang S, Ma Y, Tang Y, Giordano C, Antonietti M. SiO2-Surface-Assisted Controllable Synthesis of TaON and Ta3N5 Nanoparticles for Alkene Epoxidation. Angew Chem Int Ed Engl 2011; 51:961-5. [DOI: 10.1002/anie.201107216] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Indexed: 11/08/2022]
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47
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Gao Q, Wang S, Ma Y, Tang Y, Giordano C, Antonietti M. SiO2-Surface-Assisted Controllable Synthesis of TaON and Ta3N5 Nanoparticles for Alkene Epoxidation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107216] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Cordeiro PJ, Tilley TD. Enhancement of epoxidation efficiencies for Ta-SBA15 catalysts. The influence of modification with -EMe3 (E = Si, Ge, Sn) groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6295-6304. [PMID: 21517024 DOI: 10.1021/la200090u] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Site-isolated Ta(V) centers were introduced onto the surface of a mesoporous SBA-15 support via the thermolytic molecular precursor method. After thermal treatment under oxygen, the resulting Si-OH and Ta-OH sites of TaSBA15-O(2)were modified with a series of trimethyl group 14 species, Me(3)E-, by treatment with Me(3)E-NMe(2) (E = Si, Ge, Sn) reagents. The resulting surface-modified catalysts (Me(3)E)(cap)TaSBA15 exhibit a significantly increased rate of cyclohexene epoxidation with H(2)O(2) as an oxidant, and provided a decreased amount of allylic oxidation products with respect to the unmodified material, TaSBA15-O(2). The rate of nonproductive H(2)O(2) decomposition, as monitored via (1)H NMR spectroscopy, significantly decreased after the surface modification. The structure of the TaSBA15 catalysts and potential Ta(V) epoxidation intermediates (formed upon treatment of Ta(V) materials with H(2)O(2)) were probed using UV-visible absorbance and diffuse-reflectance UV-visible spectroscopy. A Ta(V)(η(2)-O(2)) intermediate species is proposed for the TaSBA15-O(2), (Me(3)Si)(cap)TaSBA15, and (Me(3)Ge)(cap)TaSBA15 catalysts, while intermediate species for the (Me(3)Sn)(cap)TaSBA15 catalysts could not be characterized.
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Affiliation(s)
- Paul J Cordeiro
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
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49
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50
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Cordeiro PJ, Tilley TD. Enhancement of the Catalytic Activity of Titanium-Based Terminal Olefin Epoxidation Catalysts via Surface Modification with Functionalized Protic Molecules. ACS Catal 2011. [DOI: 10.1021/cs200017s] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paul J. Cordeiro
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - T. Don Tilley
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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