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Liao GJ, Hsueh WH, Yen YH, Shih YC, Wang CH, Wang JH, Luo MF. Decomposition of methanol-d 4 on Rh nanoclusters supported by thin-film Al 2O 3/NiAl(100) under near-ambient-pressure conditions. Phys Chem Chem Phys 2024; 26:5059-5069. [PMID: 38258542 DOI: 10.1039/d3cp05303b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The decomposition of methanol-d4 (CD3OD) on Rh nanoclusters grown by the deposition of Rh vapors onto an ordered thin film of Al2O3/NiAl(100) was studied, with various surface-probe techniques and largely under near-ambient-pressure (NAP) conditions. The results showed a superior reactivity of small Rh clusters (diameter < 1.5 nm) exposed to CD3OD at 5 × 10-3-0.1 mbar at 400 K; the gaseous production of CO and D2 from decomposed methanol-d4 per Rh surface site on the small Rh clusters with diameters of ∼1.1 nm was nearly 8 times that on large ones with diameters of ∼3.5 nm. The promotion of reactivity with decreased cluster size under NAP conditions was evidently greater than that under ultrahigh vacuum conditions. Moreover, the concentration of atomic carbon (C*; where * denotes adsorbate)-a key catalyst poisoner-yielded from the dissociation of CO* from dehydrogenated methanol-d4 was significantly smaller on small clusters (diameter < 1.5 nm). The NAP size effect on methanol-d4 decomposition involved the surface hydroxyl (OH*) from the little co-adsorbed water (H2O*) that was dissociated at a probability dependent on the cluster size. H2O* was more likely dissociated into OH* on small Rh clusters, by virtue of their more reactive d-band structure, and the OH* then effectively promoted the O-D cleavage of methanol-d4, as the rate-determining step, and thus the reaction probability; on the other hand, the OH* limited CO* dissociation on small Rh clusters via both adsorbate and lateral effects. These results suggest that the superior properties of small Rh clusters in both reactivity and anti-poisoning would persist and be highly applicable under "real-world" catalysis conditions.
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Affiliation(s)
- Guan-Jr Liao
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan.
| | - Wen-Hao Hsueh
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Ting-Zhou Road, Taipei, Taiwan.
| | - Yu-Hsiang Yen
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan.
| | - Yi-Chan Shih
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan.
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Jeng-Han Wang
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Ting-Zhou Road, Taipei, Taiwan.
| | - Meng-Fan Luo
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan.
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Liao GJ, Hsueh WH, Yen YH, Shih YC, Wang CH, Wang JH, Luo MF. Decomposition of methanol-d4 on a thin film of Al2O3/NiAl(100) under near-ambient-pressure conditions. J Chem Phys 2023; 158:2887766. [PMID: 37129140 DOI: 10.1063/5.0151135] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023] Open
Abstract
We have studied the decomposition of methanol-d4 on thin film Al2O3/NiAl(100) under near-ambient-pressure conditions, with varied surface-probe techniques and calculations based on density-functional theory. Methanol-d4 neither adsorbed nor reacted on Al2O3/NiAl(100) at 400 K under ultrahigh vacuum conditions, whereas they dehydrogenated, largely to methoxy-d3 (CD3O*, * denoting adsorbates) and formaldehyde-d2 (CD2O*), on the surface when the methanol-d4 partial pressure was increased to 10-3 mbar and above. The dehydrogenation was facilitated by hydroxyl (OH* or OD*) from the dissociation of little co-adsorbed water; a small fraction of CD2O* interacted further with OH* (OD*) to form, via intermediate CD2OOH* (CD2OOD*), formic acid (DCOOH* or DCOOD*). A few surface carbonates were also yielded, likely on the defect sites of Al2O3/NiAl(100). The results suggest that alumina not only supports metal clusters but also participates in reactions under realistic catalytic conditions. One may consider accordingly the multiple functions of alumina while designing ideal catalysts.
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Affiliation(s)
- Guan-Jr Liao
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan
| | - Wen-Hao Hsueh
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei, Taiwan
| | - Yu-Hsiang Yen
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan
| | - Yi-Chan Shih
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Jeng-Han Wang
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei, Taiwan
| | - Meng-Fan Luo
- Department of Physics, National Central University, No. 300 Jhongda Road, Jhongli 32054, Taiwan
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Hung TC, Liao TW, Liao GJ, Liao ZH, Hsu PW, Lai YL, Hsu YJ, Wang CH, Yang YW, Wang JH, Luo MF. Promoted activity of annealed Rh nanoclusters on thin films of Al 2O 3/NiAl(100) in the dehydrogenation of Methanol-d 4. RSC Adv 2021; 11:24762-24771. [PMID: 35481058 PMCID: PMC9036867 DOI: 10.1039/d1ra04066a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/12/2021] [Indexed: 11/21/2022] Open
Abstract
Annealed Rh nanoclusters on an ordered thin film of Al2O3/NiAl(100) were shown to exhibit a promoted reactivity toward the decomposition of methanol-d4, under both ultrahigh vacuum and near-ambient-pressure conditions. The Rh clusters were grown with vapor deposition onto the Al2O3/NiAl(100) surface at 300 K and annealed to 700 K. The decomposition of methanol-d4 proceeded only through dehydrogenation, with CO and deuterium as products, on Rh clusters both as prepared and annealed. Nevertheless, the catalytic reactivity of the annealed clusters, measured with the production of either CO or deuterium per surface Rh site from the reaction, became at least 2–3 times that of the as-prepared ones. The promoted reactivity results from an altered support effect associated with an annealing-induced mass transport at the surface. Our results demonstrate a possibility to practically prepare reactive Rh clusters, regardless of the cluster size, that can tolerate an elevated reaction temperature, with no decreased reactivity. Annealing alters the support effect to promote the activity of alumina-supported Rh clusters in methanol dehydrogenation.![]()
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Affiliation(s)
- Ting-Chieh Hung
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
| | - Ting-Wei Liao
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
| | - Guan-Jr Liao
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
| | - Zhen-He Liao
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
| | - Po-Wei Hsu
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
| | - Yu-Ling Lai
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Yao-Jane Hsu
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Yaw-Wen Yang
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Jeng-Han Wang
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Taiwan
| | - Meng-Fan Luo
- Department of Physics
- National Central University
- Taoyuan
- Taiwan
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4
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Chilimoniuk P, Socha RP, Czujko T. Nanoporous Anodic Aluminum-Iron Oxide with a Tunable Band Gap Formed on the FeAl 3 Intermetallic Phase. MATERIALS 2020; 13:ma13163471. [PMID: 32781714 PMCID: PMC7475830 DOI: 10.3390/ma13163471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/24/2020] [Accepted: 08/03/2020] [Indexed: 11/16/2022]
Abstract
Nanostructured anodic oxide layers on an FeAl3 intermetallic alloy was prepared by two-step anodization in 20 wt.% H2SO4 at 0 °C. The obtained anodic oxide coating was subjected to phase and chemical composition analysis using XPS and XRD techniques. An analysis of the band gap of individual coatings was also performed. The applied parameters of the anodization process were determined, enabling the formation of a nanostructured coating on the FeAl3 intermetallic alloy. Tests were carried out on samples produced at a voltage between 10 V and 22.5 V in 2.5 V steps. The produced coatings were subjected to an annealing process at 900 °C for 2 h in an argon protective atmosphere. Moreover, the influence of the substrate chemical composition on the chemical and phase composition of the anodic oxide are discussed. Band gaps of 2.37 eV at 22.5 V and 2.64 eV at 10 V were obtained directly after the anodizing process. After applying the heat treatment, band gap values of 2.10 eV at 22.5 Vand 2.48 eV for the coating produced at 10 V were obtained.
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Affiliation(s)
- Paulina Chilimoniuk
- Institute of Materials Science and Engineering, Faculty of Advanced Technology and Chemistry, Military University of Technology, Kaliskiego 2 Street, 00-908 Warszawa, Poland
- Correspondence: (P.C.); (T.C.); Tel.: +48-261-839-445 (P.C. & T.C.)
| | - Robert P. Socha
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland;
| | - Tomasz Czujko
- Institute of Materials Science and Engineering, Faculty of Advanced Technology and Chemistry, Military University of Technology, Kaliskiego 2 Street, 00-908 Warszawa, Poland
- Correspondence: (P.C.); (T.C.); Tel.: +48-261-839-445 (P.C. & T.C.)
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5
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Lee H, Liao ZH, Hsu PW, Wu YC, Cheng MC, Wang JH, Luo MF. Decomposition of methanol-d4 on Au–Rh bimetallic nanoclusters on a thin film of Al2O3/NiAl(100). Phys Chem Chem Phys 2018; 20:11260-11272. [DOI: 10.1039/c8cp01714j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of Au nanoclusters was sharply enhanced by incorporating a few Rh atoms.
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Affiliation(s)
- Hsuan Lee
- Department of Physics
- National Central University
- Taoyuan 32001
- Taiwan
| | - Zhen-He Liao
- Department of Physics
- National Central University
- Taoyuan 32001
- Taiwan
| | - Po-Wei Hsu
- Department of Physics
- National Central University
- Taoyuan 32001
- Taiwan
| | - Yu-Cheng Wu
- Department of Physics
- National Central University
- Taoyuan 32001
- Taiwan
| | - Meng-Chin Cheng
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Taiwan
| | - Jeng-Han Wang
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Taiwan
| | - Meng-Fan Luo
- Department of Physics
- National Central University
- Taoyuan 32001
- Taiwan
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6
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Feng H, Libera JA, Stair PC, Miller JT, Elam JW. Subnanometer Palladium Particles Synthesized by Atomic Layer Deposition. ACS Catal 2011. [DOI: 10.1021/cs2000957] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | | | - Peter C. Stair
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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7
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Qi X, Wei Z, Li L, Li L, Ji M, Zhang Y, Xia M, Ma X. DFT studies of the pH dependence of the reactivity of methanol on a Pd(111) surface. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Ludwig W, Savara A, Schauermann S. Role of hydrogen in olefin isomerization and hydrogenation: a molecular beam study on Pd model supported catalysts. Dalton Trans 2010; 39:8484-91. [DOI: 10.1039/c003133j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Sanchez SI, Small MW, Zuo JM, Nuzzo RG. Structural Characterization of Pt−Pd and Pd−Pt Core−Shell Nanoclusters at Atomic Resolution. J Am Chem Soc 2009; 131:8683-9. [DOI: 10.1021/ja9020952] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio I. Sanchez
- Department of Chemistry and the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, and Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Matthew W. Small
- Department of Chemistry and the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, and Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Jian-min Zuo
- Department of Chemistry and the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, and Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Ralph G. Nuzzo
- Department of Chemistry and the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, and Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
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10
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Knop‐Gericke A, Kleimenov E, Hävecker M, Blume R, Teschner D, Zafeiratos S, Schlögl R, Bukhtiyarov VI, Kaichev VV, Prosvirin IP, Nizovskii AI, Bluhm H, Barinov A, Dudin P, Kiskinova M. Chapter 4 X‐Ray Photoelectron Spectroscopy for Investigation of Heterogeneous Catalytic Processes. ADVANCES IN CATALYSIS 2009. [DOI: 10.1016/s0360-0564(08)00004-7] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Nowitzki T, Borchert H, Jürgens B, Risse T, Zielasek V, Bäumer M. UHV Studies of Methanol Decomposition on Mono- and Bimetallic CoPd Nanoparticles Supported on Thin Alumina Films. Chemphyschem 2008; 9:729-39. [DOI: 10.1002/cphc.200700663] [Citation(s) in RCA: 11] [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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12
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13
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Sum Frequency Generation and Polarization–Modulation Infrared Reflection Absorption Spectroscopy of Functioning Model Catalysts from Ultrahigh Vacuum to Ambient Pressure. ADVANCES IN CATALYSIS 2007. [DOI: 10.1016/s0360-0564(06)51004-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Bäumer M, Libuda J, Neyman KM, Rösch N, Rupprechter G, Freund HJ. Adsorption and reaction of methanol on supported palladium catalysts: microscopic-level studies from ultrahigh vacuum to ambient pressure conditions. Phys Chem Chem Phys 2007; 9:3541-58. [PMID: 17612720 DOI: 10.1039/b700365j] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We investigated the decomposition and (partial) oxidation of methanol on Pd based catalysts in an integrated attempt, simultaneously bridging both the pressure and the materials gap. Combined studies were performed on well-defined Pd model catalysts based on ordered Al(2)O(3) and Fe(3)O(4) thin films, on well-defined particles supported on powders and on Pd single crystals. The interaction of Pd nanoparticles and Pd(111) with CH(3)OH and CH(3)OH/O(2) mixtures was examined from ultrahigh vacuum conditions up to ambient pressures, utilizing a broad range of surface specific vibrational spectroscopies which included IRAS, TR-IRAS, PM-IRAS, SFG, and DRIFTS. Detailed kinetic studies in the low pressure region were performed by molecular beam methods, providing comprehensive insights into the microkinetics of the reaction system. The underlying microscopic processes were studied theoretically on the basis of specially designed 3-D nanocluster models containing approximately 10(2) metal atoms. The efficiency of this novel modelling approach was demonstrated by rationalizing and complementing pertinent experimental results. In order to connect these results to the behavior under ambient conditions, kinetic and spectroscopic investigations were performed in reaction cells and lab reactors. Specifically, we focused on (1) particle size and structure dependent effects in methanol oxidation and decomposition, (2) support effects and their relation to activity and selectivity, (3) the influence of poisons such as carbon, and (4) the role of oxide and surface oxide formation on Pd nanoparticles.
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Affiliation(s)
- Marcus Bäumer
- Institut für Angewandte und Physikalische Chemie, Universität Bremen, Leobener Str. NW2, D-28359, Bremen, Germany
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15
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Libuda J, Schalow T, Brandt B, Laurin M, Schauermann S. Model studies in heterogeneous catalysis at the microscopic level: from the structure and composition of surfaces to reaction kinetics. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0595-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Kaichev VV, Bukhtiyarov VI, Rupprechter G, Freund HJ. Activation of the C-O bond on the surface of palladium: An In situ study by X-ray photoelectron spectroscopy and sum frequency generation. KINETICS AND CATALYSIS 2005. [DOI: 10.1007/s10975-005-0073-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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X-ray photoelectron spectroscopy as a tool for in-situ study of the mechanisms of heterogeneous catalytic reactions. Top Catal 2005. [DOI: 10.1007/s11244-005-9254-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Varazo K, Parsons FW, Ma S, Chen DA. Methanol Chemistry on Cu and Oxygen-Covered Cu Nanoclusters Supported on TiO2(110). J Phys Chem B 2004. [DOI: 10.1021/jp047566k] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Varazo
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - F. W. Parsons
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - S. Ma
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - D. A. Chen
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
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19
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Chen ZX, Neyman KM, Lim KH, Rösch N. CH3O decomposition on PdZn(111), Pd(111), and Cu(111). A theoretical study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:8068-8077. [PMID: 15350074 DOI: 10.1021/la049377z] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Methanol steam re-forming, catalyzed by Pd/ZnO, is a potential hydrogen source for fuel cells, in particular in pollution-free vehicles. To contribute to the understanding of pertinent reaction mechanisms, density functional slab model studies on two competing decomposition pathways of adsorbed methoxide (CH(3)O) have been carried out, namely, dehydrogenation to formaldehyde and C-O bond breaking to methyl. For the (111) surfaces of Pd, Cu, and 1:1 Pd-Zn alloy, adsorption complexes of various reactants, intermediates, transition states, and products relevant for the decomposition processes were computationally characterized. On the surface of Pd-Zn alloy, H and all studied C-bound species were found to prefer sites with a majority of Pd atoms, whereas O-bound congeners tend to be located on sites with a majority of Zn atoms. Compared to Pd(111), the adsorption energy of O-bound species was calculated to be larger on PdZn(111), whereas C-bound moieties were less strongly adsorbed. C-H scission of CH(3)O on various substrates under study was demonstrated to proceed easier than C-O bond breaking. The energy barrier for the dehydrogenation of CH(3)O on PdZn(111) (113 kJ mol(-)(1)) and Cu(111) (112 kJ mol(-)(1)) is about 4 times as high as that on Pd(111), due to the fact that CH(3)O interacts more weakly with Pd than with PdZn and Cu surfaces. Calculated results showed that the decomposition of methoxide to formaldehyde is thermodynamically favored on Pd(111), but it is an endothermic process on PdZn(111) and Cu(111) surfaces.
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Affiliation(s)
- Zhao-Xu Chen
- Department Chemie, Technische Universität München, 85747 Garching, Germany
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20
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Micelle-mediated UV-photoactivation route for the evolution of Pdcore–Aushell and Pdcore–Agshell bimetallics from photogenerated Pd nanoparticles. J Photochem Photobiol A Chem 2004. [DOI: 10.1016/j.jphotochem.2004.04.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Morkel M, Kaichev VV, Rupprechter G, Freund HJ, Prosvirin IP, Bukhtiyarov VI. Methanol Dehydrogenation and Formation of Carbonaceous Overlayers on Pd(111) Studied by High-Pressure SFG and XPS Spectroscopy. J Phys Chem B 2004. [DOI: 10.1021/jp048149a] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Johánek V, Schauermann S, Laurin M, Gopinath CS, Libuda J, Freund HJ. On the Role of Different Adsorption and Reaction Sites on Supported Nanoparticles during a Catalytic Reaction: NO Decomposition on a Pd/Alumina Model Catalyst. J Phys Chem B 2004. [DOI: 10.1021/jp031371f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- V. Johánek
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
| | - S. Schauermann
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
| | - M. Laurin
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
| | - Chinnakonda S. Gopinath
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
| | - J. Libuda
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
| | - H.-J. Freund
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India
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23
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Zhou J, Ma S, Kang YC, Chen DA. Dimethyl Methylphosphonate Decomposition on Titania-Supported Ni Clusters and Films: A Comparison of Chemical Activity on Different Ni Surfaces. J Phys Chem B 2004. [DOI: 10.1021/jp040185m] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Zhou
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - S. Ma
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - Y. C. Kang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
| | - D. A. Chen
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208
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24
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Bertarione S, Scarano D, Zecchina A, Johánek V, Hoffmann J, Schauermann S, Frank MM, Libuda J, Rupprechter G, Freund HJ. Surface Reactivity of Pd Nanoparticles Supported on Polycrystalline Substrates As Compared to Thin Film Model Catalysts: Infrared Study of CO Adsorption. J Phys Chem B 2004. [DOI: 10.1021/jp036718t] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Serena Bertarione
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Domenica Scarano
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Adriano Zecchina
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Viktor Johánek
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Jens Hoffmann
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Swetlana Schauermann
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Martin M. Frank
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Jörg Libuda
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Günther Rupprechter
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
| | - Hans-Joachim Freund
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, via P. Giuria 7, 10125 Torino, Italy, Consorzio INSTM, Via Benedetto Varchi n. 59, 50132 Firenze, Italy, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and IBM T.J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
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Rupprechter G. 8 Surface vibrational spectroscopy on noble metal catalysts from ultrahigh vacuum to atmospheric pressure. ACTA ACUST UNITED AC 2004. [DOI: 10.1039/b313667c] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Freund HJ, Libuda J, Bäumer M, Risse T, Carlsson A. Cluster, facets, and edges: site-dependent selective chemistry on model catalysts. CHEM REC 2003; 3:181-201. [PMID: 12900938 DOI: 10.1002/tcr.10060] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
More than activity, selectivity of catalytic reactions is the focus of research in the 21(st) century. We review studies on model systems that address the issue of directing a catalytic reaction on disperse metal catalysts by controlling the specific surface site. Three examples are explored: methanol dehydrogenation over Pd/alumina, NO dissociation on Pd/alumina, and reaction studies for molecules relevant in a Fischer-Tropsch scenario on a bimetallic Pd/Co/alumina model catalyst. We show how surface science can be used by combining a variety of experimental techniques to study the chemistry of model catalysts at the atomic level.
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Affiliation(s)
- H-J Freund
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
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