1
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Bavisotto R, Pradipta Roy S, Hopper N, Tysoe WT. Understanding Hydrogen Pressure Control of Furfural Hydrogenation Selectivity on a Pd(111) Model Catalyst. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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2
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Chen L, Moura P, Medlin JW, Grönbeck H. Multiple Roles of Alkanethiolate-Ligands in Direct Formation of H 2 O 2 over Pd Nanoparticles. Angew Chem Int Ed Engl 2022; 61:e202213113. [PMID: 36250807 PMCID: PMC10099626 DOI: 10.1002/anie.202213113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/07/2022]
Abstract
Coadsorbed organic species including thiolates can promote direct synthesis of hydrogen peroxide from H2 and O2 over Pd particles. Here, density functional theory based kinetic modeling, augmented with activity measurements and vibrational spectroscopy are used to provide atomistic understanding of direct H2 O2 formation over alkylthiolate(RS) Pd. We find that the RS species are oxidized during reaction conditions yielding RSO2 as the effective ligand. The RSO2 ligand shows superior ability for proton transfer to the intermediate surface species OOH, which accelerates the formation of H2 O2 . The ligands promote the selectivity also by blocking sites for unselective water formation and by modifying the electronic structure of Pd. The work rationalizes observations of enhanced selectivity of direct H2 O2 formation over ligand-funtionalized Pd nanoparticles and shows that engineering of organic surface modifiers can be used to promote desired hydrogen transfer routes.
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Affiliation(s)
- Lin Chen
- Department of Physics and Competence Centre for Catalysis, Chalmers University of Technology, 41296, Göteborg, Sweden
| | - Pedro Moura
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - J Will Medlin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Henrik Grönbeck
- Department of Physics and Competence Centre for Catalysis, Chalmers University of Technology, 41296, Göteborg, Sweden
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3
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Feng S, Liu X, Su Z, Li G, Hu C. Low temperature catalytic hydrodeoxygenation of lignin-derived phenols to cyclohexanols over the Ru/SBA-15 catalyst. RSC Adv 2022; 12:9352-9362. [PMID: 35424881 PMCID: PMC8985087 DOI: 10.1039/d2ra01183b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/18/2022] [Indexed: 11/24/2022] Open
Abstract
Cyclohexanol and its derivatives are widely used as chemical intermediates and fuel additives. Herein, Ru/SBA-15 catalysts were prepared via impregnation, and used for the production of cyclohexanols from lignin-derived phenols. The catalyst samples were characterized by XRD, XPS, TEM, etc., where the Ru0 species was speculated as the active phase. 5 wt% Ru/SBA-15 with small Ru particle size (4.99 nm) and high Ru dispersion (27.05%) exhibited an excellent hydrogenation activity. A high cyclohexanol yield of >99.9% was achieved at 20 °C for 5 h in an aqueous phase, and the catalyst indicated stable activity and selectivity after five runs. Crucially, Ru/SBA-15 exhibited a zero-order reaction rate with an apparent activation energy (Ea) as low as 10.88 kJ mol−1 and a TON of 172.84 at 80 °C. Simultaneously, demethoxylation activity was also observed in the hydrodeoxygenation (HDO) of G- and S-type monophenols, and a high yield of 37.4% of cyclohexanol was obtained at 80 °C and 4 h when using eugenol as substrate. Ru/SBA-15 showed excellent activity for phenol to cyclohexanol at 20 °C and exhibited a zero-order character with low Ea of 10.88 kJ mol−1. A high yield of 37.4% of cyclohexanol was obtained at 80 °C and 4 h when using eugenol as substrate.![]()
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Affiliation(s)
- Shanshan Feng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu Sichuan 610064 P. R. China
| | - Xudong Liu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Sciences Changsha 410004 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu Sichuan 610064 P. R. China
| | - Guiying Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu Sichuan 610064 P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu Sichuan 610064 P. R. China
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4
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Schröder C, Haugg PA, Baumann AK, Schmidt MC, Smyczek J, Schauermann S. Competing Reaction Pathways in Heterogeneously Catalyzed Hydrogenation of Allyl Cyanide: The Chemical Nature of Surface Species. Chemistry 2021; 27:17240-17254. [PMID: 34608688 PMCID: PMC9297874 DOI: 10.1002/chem.202103238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Indexed: 11/11/2022]
Abstract
We present a mechanistic study on the formation of an active ligand layer over Pd(111), turning the catalytic surface highly active and selective in partial hydrogenation of an α,β‐unsaturated aldehyde acrolein. Specifically, we investigate the chemical composition of a ligand layer consisting of allyl cyanide deposited on Pd(111) and its dynamic changes under the hydrogenation conditions. On pristine surface, allyl cyanide largely retains its chemical structure and forms a layer of molecular species with the CN bond oriented nearly parallel to the underlying metal. In the presence of hydrogen, the chemical composition of allyl cyanide strongly changes. At 100 K, allyl cyanide transforms to unsaturated imine species, containing the C=C and C=N double bonds. At increasing temperatures, these species undergo two competing reaction pathways. First, the C=C bond become hydrogenated and the stable N‐butylimine species are produced. In the competing pathway, the unsaturated imine reacts with hydrogen to fully hydrogenate the imine group and produce butylamine. The latter species are unstable under the hydrogenation reaction conditions and desorb from the surface, while the N‐butylimine adsorbates formed in the first reaction pathway remain adsorbed and act as an active ligand layer in selective hydrogenation of acrolein.
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Affiliation(s)
- Carsten Schröder
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Philipp A Haugg
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Ann-Katrin Baumann
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Marvin C Schmidt
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Jan Smyczek
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Swetlana Schauermann
- Institute of Physical Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
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5
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Rizescu C, Sun C, Popescu I, Urdă A, Da Costa P, Marcu IC. Hydrodeoxygenation of benzyl alcohol on transition-metal-containing mixed oxides catalysts derived from layered double hydroxide precursors. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.04.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Slot TK, Riley N, Shiju NR, Medlin JW, Rothenberg G. An experimental approach for controlling confinement effects at catalyst interfaces. Chem Sci 2020; 11:11024-11029. [PMID: 34123192 PMCID: PMC8162257 DOI: 10.1039/d0sc04118a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/04/2020] [Indexed: 01/12/2023] Open
Abstract
Catalysts are conventionally designed with a focus on enthalpic effects, manipulating the Arrhenius activation energy. This approach ignores the possibility of designing materials to control the entropic factors that determine the pre-exponential factor. Here we investigate a new method of designing supported Pt catalysts with varying degrees of molecular confinement at the active site. Combining these with fast and precise online measurements, we analyse the kinetics of a model reaction, the platinum-catalysed hydrolysis of ammonia borane. We control the environment around the Pt particles by erecting organophosphonic acid barriers of different heights and at different distances. This is done by first coating the particles with organothiols, then coating the surface with organophosphonic acids, and finally removing the thiols. The result is a set of catalysts with well-defined "empty areas" surrounding the active sites. Generating Arrhenius plots with >300 points each, we then compare the effects of each confinement scenario. We show experimentally that confining the reaction influences mainly the entropy part of the enthalpy/entropy trade-off, leaving the enthalpy unchanged. Furthermore, we find this entropy contribution is only relevant at very small distances (<3 Å for ammonia borane), where the "empty space" is of a similar size to the reactant molecule. This suggests that confinement effects observed over larger distances must be enthalpic in nature.
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Affiliation(s)
- Thierry K Slot
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - Nathan Riley
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - N Raveendran Shiju
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - J Will Medlin
- Department of Chemical and Biological Engineering, University of Colorado Boulder Jennie Smoly Caruthers Biotechnology Building, 3415 Colorado Avenue Boulder Colorado 80303 USA
| | - Gadi Rothenberg
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
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7
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F. de L. e Freitas L, Puértolas B, Zhang J, Wang B, Hoffman AS, Bare SR, Pérez-Ramírez J, Medlin JW, Nikolla E. Tunable Catalytic Performance of Palladium Nanoparticles for H2O2 Direct Synthesis via Surface-Bound Ligands. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01517] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lucas F. de L. e Freitas
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Begoña Puértolas
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, Zurich 8093, Switzerland
| | - Jing Zhang
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Bingwen Wang
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Adam S. Hoffman
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Simon R. Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Javier Pérez-Ramírez
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, Zurich 8093, Switzerland
| | - J. Will Medlin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
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8
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Rasmussen MJ, Medlin JW. Role of tungsten modifiers in bimetallic catalysts for enhanced hydrodeoxygenation activity and selectivity. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02240f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Addition of tungsten to supported platinum catalysts increased the rate of benzyl alcohol hydrodeoxygenation via a bifunctional mechanism, whereas undesirable decarbonylation was suppressed due to blocking of platinum terrace sites.
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Affiliation(s)
- Mathew J. Rasmussen
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
| | - J. Will Medlin
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
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9
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Attia S, Schmidt MC, Schröder C, Schauermann S. Formation and Stabilization Mechanisms of Enols on Pt through Multiple Hydrogen Bonding. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01481] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Smadar Attia
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Marvin C. Schmidt
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Carsten Schröder
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
| | - Swetlana Schauermann
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118 Kiel, Germany
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10
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Sá J, Medlin JW. On‐the‐fly
Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding. ChemCatChem 2019. [DOI: 10.1002/cctc.201900770] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jacinto Sá
- Institute of Physical ChemistryPolish Academy of Sciences ul. Kasprzaka 44/52 01-224 Warsaw Poland
- Department of Chemistry, Ångström LaboratoryUppsala University Box 532 751 20 Uppsala Sweden
| | - J. Will Medlin
- Department of Chemical and Biological EngineeringUniversity of Colorado Boulder, JSCBB D125 3415 Colorado Avenue, Boulder Colorado 80303 USA
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11
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Attia S, Spadafora EJ, Hartmann J, Freund HJ, Schauermann S. Molecular beam/infrared reflection-absorption spectroscopy apparatus for probing heterogeneously catalyzed reactions on functionalized and nanostructured model surfaces. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:053903. [PMID: 31153295 DOI: 10.1063/1.5093487] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
A new custom-designed ultrahigh vacuum (UHV) apparatus combining molecular beam techniques and in situ surface spectroscopy for reactivity measurements on complex nanostructured model surfaces is described. It has been specifically designed to study the mechanisms, kinetics, and dynamics of heterogeneously catalyzed reactions over well-defined model catalysts consisting of metal nanoparticles supported on thin oxide films epitaxially grown on metal single crystals. The reactivity studies can be performed in a broad pressure range starting from UHV up to the ambient pressure conditions. The UHV system includes (i) a preparation chamber providing the experimental techniques required for the preparation and structural characterization of single-crystal based model catalysts such as oxide supported metal particles or ordered oxide surfaces and (ii) the reaction chamber containing three molecular beams-two effusive and one supersonic, which are crossed at the same point on the sample surface, infrared reflection-absorption spectroscopy for the detection of surface-adsorbed species, and quadrupole mass spectrometry for gas phase analysis. The supersonic beam is generated in a pulsed supersonic expansion and can be modulated via a variable duty-cycle chopper. The effusive beams are produced by newly developed compact differentially pumped sources based on multichannel glass capillary arrays. Both effusive sources can be modulated by a vacuum-motor driven chopper and are capable of providing high flux and high purity beams. The apparatus contains an ambient pressure cell, which is connected to the preparation chamber via an in situ sample transfer system and provides an experimental possibility to study the reactivity of well-defined nanostructured model catalysts in a broad range of pressure conditions-up to ambient pressure-with the gas phase analysis based on gas chromatography. Additionally, a dedicated deposition chamber is connected to the preparation chamber, which is employed for the in situ functionalization of model surfaces with large organic molecules serving as promoters or modifiers of chemical reactions. We present a general overview of the apparatus as well as a description of the individual components and their interplay. The results of the test measurements involving the most important components are presented and discussed.
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Affiliation(s)
- Smadar Attia
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Evan J Spadafora
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 2, 24118 Kiel, Germany
| | - Jens Hartmann
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Hans-Joachim Freund
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Swetlana Schauermann
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 2, 24118 Kiel, Germany
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12
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Schauermann S. Partial Hydrogenation of Unsaturated Carbonyl Compounds: Toward Ligand-Directed Heterogeneous Catalysis. J Phys Chem Lett 2018; 9:5555-5566. [PMID: 30204444 DOI: 10.1021/acs.jpclett.8b01782] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this Perspective, we report on the recent progress in atomistic-level understanding of selective partial hydrogenation of α,β-unsaturated carbonyl compounds, particularly acrolein, toward unsaturated alcohols over model single crystalline and nanostructured Pd catalysts. This reaction was observed to proceed with nearly 100% selectivity over Pd(111) but not over supported Pd nanoparticles. The origin of the high selectivity was related to formation of a dense overlayer of oxopropyl surface species occurring at the early reaction stages via partial hydrogenation of the C=C bond in acrolein with only one H atom. This oxopropyl overlayer strongly modifies the adsorption and reactive properties of Pd(111), turning it 100% selective toward C=O bond hydrogenation. The underlying reaction mechanism represents a particular case of ligand-directed heterogeneous catalysis, in which the surface adsorbates do not directly participate in the catalytic process as the reaction intermediates but strongly affect the elementary reaction steps via specific adsorbate-adsorbate interactions.
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Affiliation(s)
- Swetlana Schauermann
- Institute of Physical Chemistry , Christian-Albrechts-University Kiel , Max-Eyth-Strasse 2 , 24118 Kiel , Germany
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13
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Kumar G, Van Cleve T, Park J, van Duin A, Medlin JW, Janik MJ. Thermodynamics of Alkanethiol Self-Assembled Monolayer Assembly on Pd Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6346-6357. [PMID: 29767994 DOI: 10.1021/acs.langmuir.7b04351] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We investigate the structure and binding energy of alkanethiolate self-assembled monolayers (SAMs) on Pd (111), Pd (100), and Pd (110) facets at different coverages. Dispersion-corrected density functional theory calculations are used to correlate the binding energy of alkanethiolates with alkyl chain length and coverage. The equilibrium coverage of thiolate layers strongly prefers 1/3 monolayer (ML) on the Pd (111) surface. The coverage of thiolates varies with chemical potential on Pd (100) and Pd (110), increasing from 1/3 to 1/2 ML on (100) and from 1/4 to 1/2 ML on (110) as the thiol chemical potential is increased. Higher coverages are driven by attractive dispersion interactions between the extended alkyl chains, such that transitions to higher coverages occur at lower thiol chemical potentials for longer chain thiolates. Stronger adsorption to the Pd (100) surface causes the equilibrium Wulff construction of Pd particles to take on a cubic shape upon saturation with thiols. The binding of H, O, and CO adsorbates is weakened as the thiolate coverage is increased, with saturation coverages causing unfavorable binding of O and CO on Pd (100) and weakened binding on other facets. Temperature-dependent CO diffuse reflectance infrared Fourier transform spectroscopy experiments are used to corroborate the weakened binding of CO in the presence of thiolate SAMs of varying surface density. Preliminary results of multiscale modeling efforts on the Pd-thiol system using a reactive force field, ReaxFF, are also discussed.
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Affiliation(s)
- Gaurav Kumar
- The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | | | - Jiyun Park
- The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Adri van Duin
- The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - J Will Medlin
- University of Colorado , Boulder , Colorado 80309 , United States
| | - Michael J Janik
- The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
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14
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Effect of Coverage on Catalytic Selectivity and Activity on Metallic and Alloy Catalysts; Vinyl Acetate Monomer Synthesis. Top Catal 2018. [DOI: 10.1007/s11244-018-0952-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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16
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Liu H, Mei Q, Li S, Yang Y, Wang Y, Liu H, Zheng L, An P, Zhang J, Han B. Selective hydrogenation of unsaturated aldehydes over Pt nanoparticles promoted by the cooperation of steric and electronic effects. Chem Commun (Camb) 2018; 54:908-911. [DOI: 10.1039/c7cc08942b] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols can reach high selectivity and activity at room temperature using Pt nanoparticles immobilized on a non-porous Al2O3 support stabilized by aspartic acid.
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17
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Serrano-Maldonado A, Rozenel SS, Jimenez-Santiago JL, Guerrero-Ríos I, Martin E. Rh nanoparticles from thiolate dimers: selective and reusable hydrogenation catalysts in ionic liquids. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00227d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thiolate-capped RhNPs in imidazolium-based ionic liquids were synthesized from [Rh(μ-SR)(COD)]2 dimmers under H2 pressure without external addition of ligand stabilizers, preserving thiolate integrity on the nanoparticle surface. This nanoparticulated systems showed a remarkable selectivity that led to their application in the one pot reductive N-alkylation to produce amines.
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Affiliation(s)
- A. Serrano-Maldonado
- Depto. de Química Inorgánica
- Facultad de Química
- Universidad Nacional Autónoma de México
- 04510 CDMX
- Mexico
| | - S. S. Rozenel
- Depto. de Química Inorgánica
- Facultad de Química
- Universidad Nacional Autónoma de México
- 04510 CDMX
- Mexico
| | - J. L. Jimenez-Santiago
- Depto. de Química Inorgánica
- Facultad de Química
- Universidad Nacional Autónoma de México
- 04510 CDMX
- Mexico
| | - I. Guerrero-Ríos
- Depto. de Química Inorgánica
- Facultad de Química
- Universidad Nacional Autónoma de México
- 04510 CDMX
- Mexico
| | - E. Martin
- Depto. de Química Inorgánica
- Facultad de Química
- Universidad Nacional Autónoma de México
- 04510 CDMX
- Mexico
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18
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Zhao M, Ji Y, Wang M, Zhong N, Kang Z, Asao N, Jiang WJ, Chen Q. Composition-Dependent Morphology of Bi- and Trimetallic Phosphides: Construction of Amorphous Pd-Cu-Ni-P Nanoparticles as a Selective and Versatile Catalyst. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34804-34811. [PMID: 28937208 DOI: 10.1021/acsami.7b08082] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Amorphous materials have been widely researched in heterogeneous catalysis and for next-generation batteries. However, the well-defined production of high-quality (e.g., monodisperse and high surface area) amorphous alloy nanomaterials has rarely been reported. In this work, we investigated the correlations among the composition, morphology, and catalysis of various Pd-M-P nanoparticles (NPs) (M = Cu or Ni), which indicated that less Cu (≤20 atom %) was necessary for the formation of an amorphous morphology. The amorphous Pd-Cu-Ni-P NPs were fabricated with a controllable size and characterized carefully, which show excellent selective catalysis in the semihydrogenation of alkynes, hydrogenation of quinoline, and oxidation of primary alcohols. The uniqueness of the catalytic performance was confirmed by control experiments with monometallic Pd, amorphous Pd-Ni-P NPs, crystalline Pd-Cu-P NPs, and a crystalline counterpart of Pd-Cu-Ni-P catalyst. The catalytic selectivity likely arose from improved Pd-M (M = Cu or Ni) synergistic effects in the amorphous phase and the electron deficiency of Pd. The model reactions proceeded under H2 or O2 gas without any additives, bases, or metal oxide supports, and the catalyst could be reused several times. This report is expected to shed light on the design of amorphous alloy nanomaterials as green and inexpensive catalysts for atom-economic and selective reactions.
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Affiliation(s)
- Ming Zhao
- School of Chemical Engineering, China University of Mining and Technology , No. 1, Daxue Road, Xuzhou 221116, P. R. China
| | - Yuan Ji
- School of Chemical Engineering, China University of Mining and Technology , No. 1, Daxue Road, Xuzhou 221116, P. R. China
| | - Mengyue Wang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, P. R. China
| | - Ning Zhong
- School of Chemical Engineering, China University of Mining and Technology , No. 1, Daxue Road, Xuzhou 221116, P. R. China
| | - Zinan Kang
- School of Chemical Engineering, China University of Mining and Technology , No. 1, Daxue Road, Xuzhou 221116, P. R. China
| | - Naoki Asao
- Division of Chemistry and Materials, Graduate School of Science and Technology, Shinshu University , Ueda 386-8567, Japan
- WPI-Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577, Japan
| | - Wen-Jie Jiang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science , Beijing 100190, P. R. China
| | - Qiang Chen
- School of Chemical Engineering and Technology, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, P. R. China
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19
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Zhang J, Wang B, Nikolla E, Medlin JW. Directing Reaction Pathways through Controlled Reactant Binding at Pd–TiO
2
Interfaces. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703669] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jing Zhang
- Department of Chemical and Biological Engineering University of Colorado Boulder Boulder CO 80303 USA
| | - Bingwen Wang
- Department of Chemical Engineering and Materials Science Wayne State University Detroit MI 48202 USA
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science Wayne State University Detroit MI 48202 USA
| | - J. Will Medlin
- Department of Chemical and Biological Engineering University of Colorado Boulder Boulder CO 80303 USA
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20
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Zhang J, Wang B, Nikolla E, Medlin JW. Directing Reaction Pathways through Controlled Reactant Binding at Pd–TiO
2
Interfaces. Angew Chem Int Ed Engl 2017; 56:6594-6598. [DOI: 10.1002/anie.201703669] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Jing Zhang
- Department of Chemical and Biological Engineering University of Colorado Boulder Boulder CO 80303 USA
| | - Bingwen Wang
- Department of Chemical Engineering and Materials Science Wayne State University Detroit MI 48202 USA
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science Wayne State University Detroit MI 48202 USA
| | - J. Will Medlin
- Department of Chemical and Biological Engineering University of Colorado Boulder Boulder CO 80303 USA
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21
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Chen S, Meng L, Chen B, Chen W, Duan X, Huang X, Zhang B, Fu H, Wan Y. Poison Tolerance to the Selective Hydrogenation of Cinnamaldehyde in Water over an Ordered Mesoporous Carbonaceous Composite Supported Pd Catalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02720] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shangjun Chen
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
| | - Li Meng
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
| | - Bingxu Chen
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Wenyao Chen
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Xuezhi Duan
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Xing Huang
- Department
of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Bingsen Zhang
- Shenyang
National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
| | - Haibin Fu
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
| | - Ying Wan
- Key
Laboratory of Resource Chemistry of Ministry of Education, Shanghai
Key Laboratory of Rare Earth Functional Materials, and Department
of Chemistry, Shanghai Normal University, Shanghai 200234, People’s Republic of China
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22
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Kumar G, Lien CH, Janik MJ, Medlin JW. Catalyst Site Selection via Control over Noncovalent Interactions in Self-Assembled Monolayers. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01074] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gaurav Kumar
- Department
of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Chih-Heng Lien
- Department
of Chemical and Biological Engineering, University of Colorado - Boulder, Boulder, Colorado 80309, United States
| | - Michael J. Janik
- Department
of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - J. Will Medlin
- Department
of Chemical and Biological Engineering, University of Colorado - Boulder, Boulder, Colorado 80309, United States
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