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Taylor RL, Housley D, Barter M, Porch A, Whiston K, Folli A, Murphy DM. The influence of solvent composition on the coordination environment of the Co/Mn/Br based para-xylene oxidation catalyst as revealed by EPR and ESEEM spectroscopy. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00496h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The industrially important para-xylene oxidation reaction, based on a Co/Mn/Br catalyst, operates in a water/acetic acid (H2O/AcOH) solvent system.
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Affiliation(s)
- Rebekah L. Taylor
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Duncan Housley
- The Wilton Centre, Koch Technology Solutions Ltd., Wilton, Redcar, TS10 4RE, UK
| | - Michael Barter
- School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - Adrian Porch
- School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UK
| | - Keith Whiston
- The Wilton Centre, Koch Technology Solutions Ltd., Wilton, Redcar, TS10 4RE, UK
| | - Andrea Folli
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Damien M. Murphy
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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Lahiri D, Dwivedi A, Vasanthi R, Jha SN, Garg N. First high-pressure XAFS results at the bending-magnet-based energy-dispersive XAFS beamline BL-8 at the Indus-2 synchrotron facility. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:988-998. [PMID: 33566008 DOI: 10.1107/s1600577520006098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/04/2020] [Indexed: 06/12/2023]
Abstract
The static focusing optics of the existing energy-dispersive XAFS beamline BL-8 have been advantageously exploited to initiate diamond anvil cell based high-pressure XANES experiments at the Indus-2 synchrotron facility, India. In the framework of the limited photon statistics with the 2.5 GeV bending-magnet source, limited focusing optics and 4 mm-thick diamond windows of the sample cell, a (non-trivial) beamline alignment method for maximizing photon statistics at the sample position has been designed. Key strategies include the selection of a high X-ray energy edge, the truncation of the smallest achievable focal spot size to target size with a slit and optimization of the horizontal slit position for transmission of the desired energy band. A motor-scanning program for precise sample centering has been developed. These details are presented with rationalization for every step. With these strategies, Nb K-edge XANES spectra for Nb2O5 under high pressure (0-16.9 GPa) have been generated, reproducing the reported spectra for Nb2O5 under ambient conditions and high pressure. These first HPXANES results are reported in this paper. The scope of extending good data quality to the EXAFS range in the future is addressed. This work should inspire and guide future high-pressure XAFS experiments with comparable infrastructure.
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Affiliation(s)
- Debdutta Lahiri
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Ashutosh Dwivedi
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - R Vasanthi
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S N Jha
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Nandini Garg
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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Yamaguchi T, Nishino M, Yoshida K, Takumi M, Nagata K, Hattori T. Ion Hydration and Association in an Aqueous Calcium Chloride Solution in the GPa Range. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshio Yamaguchi
- Department of Chemistry Faculty of Science Fukuoka University Jonan Fukuoka 814‐0180 Japan
| | - Masaaki Nishino
- Department of Chemistry Faculty of Science Fukuoka University Jonan Fukuoka 814‐0180 Japan
| | - Koji Yoshida
- Department of Chemistry Faculty of Science Fukuoka University Jonan Fukuoka 814‐0180 Japan
| | - Masaharu Takumi
- Department of Applied Physics Faculty of Science Fukuoka University Jonan Fukuoka 814‐0180 Japan
| | - Kiyofumi Nagata
- Department of Applied Physics Faculty of Science Fukuoka University Jonan Fukuoka 814‐0180 Japan
| | - Takanori Hattori
- J‐PARC Center Faculty of Science Japan Atomic Energy Agency Tokai Ibaragi 319‐1195 Japan
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Pandarus V, Ciriminna R, Gingras G, Béland F, Pagliaro M, Kaliaguine S. Hydrogenolysis of C-O Chemical Bonds of Broad Scope Mediated by a New Spherical Sol-Gel Catalyst. ChemistryOpen 2018; 7:80-91. [PMID: 29318100 PMCID: PMC5754550 DOI: 10.1002/open.201700185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 11/10/2022] Open
Abstract
The new spherical sol-gel hybrid material SiliaCat Pd0 selectively mediates the hydrogenolysis of aromatic alcohols, aldehydes, and ketones by using an ultralow catalytic amount (0.1 mol % Pd) under mild reaction conditions. The broad reaction scope as well as the catalyst's superior activity and pronounced stability open the route to green and convenient reductive deoxygenation processes of primary synthetic relevance in chemical research as well as in the fine chemical and petrochemical industries.
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Affiliation(s)
- Valerica Pandarus
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - Rosaria Ciriminna
- Istituto per lo Studio dei Materiali Nanostrutturati, CNRvia U. La Malfa 15390146PalermoItaly
| | - Geneviève Gingras
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - François Béland
- SiliCycle2500, Parc-Technologique BoulevardQuebec CityQuebecG1P 4S6Canada
| | - Mario Pagliaro
- Istituto per lo Studio dei Materiali Nanostrutturati, CNRvia U. La Malfa 15390146PalermoItaly
| | - Serge Kaliaguine
- Department of Chemical EngineeringUniversité Laval2325 Rue de l'UniversitéQuebec CityQuebecG1V 0A6Canada
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Esteban-Gómez D, Cassino C, Botta M, Platas-Iglesias C. 17O and 1H relaxometric and DFT study of hyperfine coupling constants in [Mn(H2O)6]2+. RSC Adv 2014. [DOI: 10.1039/c3ra45721d] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Bordage A, Pápai M, Sas NS, Szlachetko J, Nachtegaal M, Vankó G. On the sensitivity of hard X-ray spectroscopies to the chemical state of Br. Phys Chem Chem Phys 2013; 15:11088-98. [DOI: 10.1039/c3cp50367d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Li G, Camaioni DM, Amonette JE, Zhang ZC, Johnson TJ, Fulton JL. [CuCln]2−n Ion-Pair Species in 1-Ethyl-3-methylimidazolium Chloride Ionic Liquid−Water Mixtures: Ultraviolet−Visible, X-ray Absorption Fine Structure, and Density Functional Theory Characterization. J Phys Chem B 2010; 114:12614-22. [DOI: 10.1021/jp106762b] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Guosheng Li
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
| | - Donald M. Camaioni
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
| | - James E. Amonette
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
| | - Z. Conrad Zhang
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
| | - Timothy J. Johnson
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
| | - John L. Fulton
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, 99354
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Fulton JL, Balasubramanian M. Structure of Hydronium (H3O+)/Chloride (Cl−) Contact Ion Pairs in Aqueous Hydrochloric Acid Solution: A Zundel-like Local Configuration. J Am Chem Soc 2010; 132:12597-604. [DOI: 10.1021/ja1014458] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John L. Fulton
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
| | - Mahalingam Balasubramanian
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
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Yamaguchi T, Ohzono H, Yamagami M, Yamanaka K, Yoshida K, Wakita H. Ion hydration in aqueous solutions of lithium chloride, nickel chloride, and caesium chloride in ambient to supercritical water. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2009.10.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fraga-Dubreuil J, Garcia-Verdugo E, Hamley P, Perez E, Pearson I, Thomas WB, Housley D, Partenheimer W, Poliakoff M. Prevention of Manganese Precipitation during the Continuous Selective Partial Oxidation of Methyl Aromatics with Molecular Oxygen in Supercritical Water. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900143] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Da Silva C, Proux O, Hazemann JL, James-Smith J, Testemale D, Yamaguchi T. X-ray absorption spectroscopy study of solvation and ion-pairing in aqueous gallium bromide solutions at supercritical conditions. J Mol Liq 2009. [DOI: 10.1016/j.molliq.2008.06.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Osada M, Savage PE. Terephthalic acid synthesis at higher concentrations in high-temperature liquid water. 2. Eliminating undesired byproducts. AIChE J 2009. [DOI: 10.1002/aic.11761] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Osada M, Savage PE. Terephthalic acid synthesis at higher concentrations in high-temperature liquid water. 1. Effect of oxygen feed method. AIChE J 2009. [DOI: 10.1002/aic.11718] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Jutz F, Grunwaldt JD, Baiker A. In situ XAS study of the Mn(III)(salen)Br catalyzed synthesis of cyclic organic carbonates from epoxides and CO2. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcata.2008.10.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li KT, Hsu MH, Wang I. Palladium core–porous silica shell-nanoparticles for catalyzing the hydrogenation of 4-carboxybenzaldehyde. CATAL COMMUN 2008. [DOI: 10.1016/j.catcom.2008.05.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Fulton JL, Chen Y, Heald SM, Balasubramanian M. Hydration and contact ion pairing of Ca2+ with Cl− in supercritical aqueous solution. J Chem Phys 2006; 125:094507. [PMID: 16965097 DOI: 10.1063/1.2346548] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
X-ray absorption fine structure (XAFS) spectroscopy was used to measure the first-shell structure about Ca2+ in high-temperature aqueous solution. XAFS spectra were acquired at the Ca K edge at temperatures up to 400 degrees C and pressures up to 350 bars. For the system at 400 degrees C, both Ca (4038.5 eV) and Cl (2822.4 eV) K-edge data were acquired and a global model was used to fit the two independent sets of XAFS data. Measurements were made at the bending magnet beamline (sector 20) at the Advanced Photon Source, Argonne. Above 250 degrees C, a significant number of Ca2+-Cl- direct contact ion pairs form in agreement with existing thermodynamic data for this system. For a 1 m CaCl2 solution at 400 degrees C, the mean coordination structure about Ca2+ contains 3.2+/-0.6 water molecules at an average Ca-O distance of 2.356+/-0.026 A and 1.8+/-0.7 Cl- at a Ca-Cl distance of 2.677+/-0.007 A. An evaluation of the Ca and Cl preedge and near-edge (x-ray absorption structure) spectra provided further confirmation of the change in the Ca2+ first-shell structure and symmetry. Overall these measurements provide a structural basis for understanding solvation of Ca2+ in hydrothermal systems. These results also provide important new insights into the structural aspects of Ca2+ ion pairing that are the basis of many biological processes under ambient conditions.
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Affiliation(s)
- John L Fulton
- Fundamental Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
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