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Miyamura H, Matsubara R, Miyazaki Y, Kobayashi S. Aerobic Oxidation of Alcohols at Room Temperature and Atmospheric Conditions Catalyzed by Reusable Gold Nanoclusters Stabilized by the Benzene Rings of Polystyrene Derivatives. Angew Chem Int Ed Engl 2007; 46:4151-4. [PMID: 17394276 DOI: 10.1002/anie.200700080] [Citation(s) in RCA: 322] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hiroyuki Miyamura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, The HFRE Division, ERATO, Japan Science Technology Agency, Hongo, Tokyo 113-0033, Japan
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52
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Miyamura H, Matsubara R, Miyazaki Y, Kobayashi S. Aerobic Oxidation of Alcohols at Room Temperature and Atmospheric Conditions Catalyzed by Reusable Gold Nanoclusters Stabilized by the Benzene Rings of Polystyrene Derivatives. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700080] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Catalysis by gold has rapidly become a hot topic in chemistry, with a new discovery being made almost every week. Gold is equally effective as a heterogeneous or a homogeneous catalyst and in this Review we attempt to marry these two facets to demonstrate this new found and general efficacy of gold. The latest discoveries are placed within a historical context, but the main thrust is to highlight the new catalytic possibilities that gold-catalyzed reactions currently offer the synthetic chemist, in particular in redox reactions and nucleophilic additions to pi systems. Indeed gold has proved to be an effective catalyst for many reactions for which a catalyst had not been previously identified, and many new discoveries are still expected.
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Affiliation(s)
- A Stephen K Hashmi
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
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54
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Tarmyshov KB, Müller-Plathe F. Interface between platinum(111) and liquid isopropanol (2-propanol): A model for molecular dynamics studies. J Chem Phys 2007; 126:074702. [PMID: 17328622 DOI: 10.1063/1.2472357] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A molecular dynamics model and its parametrization procedure are devised and used to study adsorption of isopropanol on platinum(111) (Pt(111)) surface in unsaturated and oversaturated coverages regimes. Static and dynamic properties of the interface between Pt(111) and liquid isopropanol are also investigated. The magnitude of the adsorption energy at unsaturated level increases at higher coverages. At the oversaturated coverage (multilayer adsorption) the adsorption energy reduces, which coincides with findings by Panja et al. in their temperature-programed desorption experiment [Surf. Sci. 395, 248 (1998)]. The density analysis showed a strong packing of molecules at the interface followed by a depletion layer and then by an oscillating density profile up to 3 nm. The distribution of individual atom types showed that the first adsorbed layer forms a hydrophobic methyl "brush." This brush then determines the distributions further from the surface. In the second layer methyl and methine groups are closer to the surface and followed by the hydroxyl groups; the third layer has exactly the inverted distribution. The alternating pattern extends up to about 2 nm from the surface. The orientational structure of molecules as a function of distance of molecules is determined by the atom distribution and surprisingly does not depend on the electrostatic or chemical interactions of isopropanol with the metal surface. However, possible formation of hydrogen bonds in the first layer is notably influenced by these interactions. The surface-adsorbate interactions influence the mobility of isopropanol molecules only in the first layer. Mobility in the higher layers is independent of these interactions.
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Affiliation(s)
- Konstantin B Tarmyshov
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, 64287 Darmstadt, Germany.
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55
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Corma A, Boronat M, González S, Illas F. On the activation of molecular hydrogen by gold: a theoretical approximation to the nature of potential active sites. Chem Commun (Camb) 2007:3371-3. [DOI: 10.1039/b708468d] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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56
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57
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58
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Li G, Enache DI, Edwards J, Carley AF, Knight DW, Hutchings GJ. Solvent-free oxidation of benzyl alcohol with oxygen using zeolite-supported Au and Au–Pd catalysts. Catal Letters 2006. [DOI: 10.1007/s10562-006-0083-1] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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59
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Dimitratos N, Lopez-Sanchez JA, Lennon D, Porta F, Prati L, Villa A. Effect of Particle Size on Monometallic and Bimetallic (Au,Pd)/C on the Liquid Phase Oxidation of Glycerol. Catal Letters 2006. [DOI: 10.1007/s10562-006-0036-8] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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60
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Comotti M, Della Pina C, Falletta E, Rossi M. Aerobic Oxidation of Glucose with Gold Catalyst: Hydrogen Peroxide as Intermediate and Reagent. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505389] [Citation(s) in RCA: 179] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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61
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Enache DI, Edwards JK, Landon P, Solsona-Espriu B, Carley AF, Herzing AA, Watanabe M, Kiely CJ, Knight DW, Hutchings GJ. Solvent-Free Oxidation of Primary Alcohols to Aldehydes Using Au-Pd/TiO2 Catalysts. Science 2006; 311:362-5. [PMID: 16424335 DOI: 10.1126/science.1120560] [Citation(s) in RCA: 1328] [Impact Index Per Article: 73.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The oxidation of alcohols to aldehydes with O2 in place of stoichiometric oxygen donors is a crucial process for the synthesis of fine chemicals. However, the catalysts that have been identified so far are relatively inactive with primary alkyl alcohols. We showed that Au/Pd-TiO2 catalysts give very high turnover frequencies (up to 270,000 turnovers per hour) for the oxidation of alcohols, including primary alkyl alcohols. The addition of Au to Pd nanocrystals improved the overall selectivity and, using scanning transmission electron microscopy combined with x-ray photoelectron spectroscopy, we showed that the Au-Pd nanocrystals were made up of a Au-rich core with a Pd-rich shell, indicating that the Au electronically influences the catalytic properties of Pd.
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Affiliation(s)
- Dan I Enache
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, UK CF10 3AT
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62
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63
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Wang D, Villa A, Porta F, Su D, Prati L. Single-phase bimetallic system for the selective oxidation of glycerol to glycerate. Chem Commun (Camb) 2006:1956-8. [PMID: 16767248 DOI: 10.1039/b518069d] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single phase bimetallic Au/Pd catalyst was prepared and characterised by TEM techniques. The high activity in the selective liquid phase oxidation of glycerol towards glycerate is unambiguously attributed to the synergistic effect of alloy.
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Affiliation(s)
- Di Wang
- Department of Inorganic Chemistry, Fritz Haber Institut der MPG, ELCASS, European Laboratory of Catalysis and Surface Science, Faradayweg 4-6, D-14195, Berlin, Germany
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64
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Mertens PGN, Bulut M, Gevers LEM, Vankelecom IFJ, Jacobs PA, Vos DED. Catalytic oxidation of 1,2-diols to α-hydroxy-carboxylates with stabilized gold nanocolloids combined with a membrane-based catalyst separation. Catal Letters 2005. [DOI: 10.1007/s10562-005-5203-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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65
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Burda C, Chen X, Narayanan R, El-Sayed MA. Chemistry and properties of nanocrystals of different shapes. Chem Rev 2005; 105:1025-102. [PMID: 15826010 DOI: 10.1021/cr030063a] [Citation(s) in RCA: 3786] [Impact Index Per Article: 199.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Clemens Burda
- Center for Chemical Dynamics and Nanomaterials Research, Department of Chemistry, Case Western Reserve University-Millis 2258, Cleveland, Ohio 44106, USA.
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66
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Bianchi CL, Canton P, Dimitratos N, Porta F, Prati L. Selective oxidation of glycerol with oxygen using mono and bimetallic catalysts based on Au, Pd and Pt metals. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.02.003] [Citation(s) in RCA: 275] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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67
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Dimitratos N, Porta F, Prati L, Villa A. Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol. Catal Letters 2005. [DOI: 10.1007/s10562-005-2114-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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68
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Comotti M, Della Pina C, Matarrese R, Rossi M. The Catalytic Activity of ?Naked? Gold Particles. Angew Chem Int Ed Engl 2004; 43:5812-5. [PMID: 15523721 DOI: 10.1002/anie.200460446] [Citation(s) in RCA: 511] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Massimiliano Comotti
- Dipartimento di Chimica Inorganica, Metallorganica e Analitica, CIMAINA and ISTM, University of Milano, Via Venezian 21, 20133 Milano, Italy
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69
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Comotti M, Della Pina C, Matarrese R, Rossi M. The Catalytic Activity of ?Naked? Gold Particles. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200460446] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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70
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Affiliation(s)
- Tamas Mallat
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Hönggerberg, HCI, CH-8093 Zurich, Switzerland.
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