1
|
Lamoth M, Jones T, Plodinec M, Machoke A, Wrabetz S, Krämer M, Karpov A, Rosowski F, Piccinin S, Schlögl R, Frei E. Nanocatalysts Unravel the Selective State of Ag. ChemCatChem 2020. [DOI: 10.1002/cctc.202000035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maximilian Lamoth
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Travis Jones
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Milivoj Plodinec
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Albert Machoke
- Max Planck Institute for Chemical Energy Conversion Department Heterogeneous Reactions Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Sabine Wrabetz
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Michael Krämer
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
| | - Andrey Karpov
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
| | - Frank Rosowski
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
- BasCat-UniCat BASF Joint Lab Technical University Berlin Hardenbergstraße 36 10623 Berlin Germany
| | - Simone Piccinin
- Istituto Officina dei Materiali (CNR-IOM) Area Science Park Basovizza S.S. 14, Km. 163,5 34149 Trieste Italy
| | - Robert Schlögl
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
- Max Planck Institute for Chemical Energy Conversion Department Heterogeneous Reactions Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Elias Frei
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| |
Collapse
|
2
|
van Hoof AJF, Filot IAW, Friedrich H, Hensen EJM. Reversible Restructuring of Silver Particles during Ethylene Epoxidation. ACS Catal 2018; 8:11794-11800. [PMID: 30555732 PMCID: PMC6292700 DOI: 10.1021/acscatal.8b03331] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/30/2018] [Indexed: 11/28/2022]
Abstract
![]()
The restructuring
of a silver catalyst during ethylene epoxidation
under industrially relevant conditions was investigated without and
with vinyl chloride (VC) promotion. During non-VC-promoted ethylene
epoxidation, the silver particles grow and voids are formed at the
surface and in the bulk. Electron tomography highlighted the presence
of voids below the Ag surface. A mechanism is proposed involving reconstruction
of the silver lattice and defect sites induced by oxygen adsorption
on the external surface and grain boundaries, which finally create
pores. Promotion of the catalytic reaction by VC suppresses to a significant
extent void formation. The use of VC also redisperses silver particles,
initially grown during ethylene epoxidation without VC. This process
is rapid as the average size decreased from 172 to 136 nm within 2
h. These insights emphasize the dynamic nature of the silver particles
during the ongoing ethylene epoxidation reaction and indicate that
particle size and morphology strongly depend on reaction conditions.
Collapse
Affiliation(s)
- Arno J. F. van Hoof
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Ivo A. W. Filot
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Heiner Friedrich
- Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| |
Collapse
|
3
|
Antonyshyn I, Sichevych O, Rasim K, Ormeci A, Burkhardt U, Titlbach S, Schunk SA, Armbrüster M, Grin Y. Chemical Behaviour of CaAg
2
under Ethylene Epoxidation Conditions. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Iryna Antonyshyn
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Olga Sichevych
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Karsten Rasim
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Alim Ormeci
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Ulrich Burkhardt
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | | | | | - Marc Armbrüster
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie Straße der Nationen 62 09111 Chemnitz Germany
| | - Yuri Grin
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| |
Collapse
|
4
|
Rahn B, Magnussen OM. Formation and Diffusion of Subsurface Adsorbates at Electrodes. J Am Chem Soc 2018; 140:9066-9069. [DOI: 10.1021/jacs.8b04903] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Björn Rahn
- Institute of Experimental and Applied Physics, Kiel University, Olshausenstrasse 40, 24098 Kiel, Germany
| | - Olaf M. Magnussen
- Institute of Experimental and Applied Physics, Kiel University, Olshausenstrasse 40, 24098 Kiel, Germany
| |
Collapse
|
5
|
Affiliation(s)
- Robert Schlögl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
- Max Planck Institute for Chemical Energy Conversion; Stiftstr. 34-36 45470 Mülheim an der Ruhr Germany
| |
Collapse
|
6
|
Huang W, Sun G, Cao T. Surface chemistry of group IB metals and related oxides. Chem Soc Rev 2017; 46:1977-2000. [DOI: 10.1039/c6cs00828c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic surface chemistry of IB metals are reviewed with an attempt to bridge model catalysts and powder catalysts.
Collapse
Affiliation(s)
- Weixin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale
- Key Laboratory of Materials for Energy Conversion of Chinese Academy of Sciences
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei 230026
| | - Guanghui Sun
- Hefei National Laboratory for Physical Sciences at the Microscale
- Key Laboratory of Materials for Energy Conversion of Chinese Academy of Sciences
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei 230026
| | - Tian Cao
- Hefei National Laboratory for Physical Sciences at the Microscale
- Key Laboratory of Materials for Energy Conversion of Chinese Academy of Sciences
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei 230026
| |
Collapse
|
7
|
Andryushechkin BV, Shevlyuga VM, Pavlova TV, Zhidomirov GM, Eltsov KN. Adsorption of O_{2} on Ag(111): Evidence of Local Oxide Formation. PHYSICAL REVIEW LETTERS 2016; 117:056101. [PMID: 27517780 DOI: 10.1103/physrevlett.117.056101] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 06/06/2023]
Abstract
The atomic structure of the disordered phase formed by oxygen on Ag(111) at low coverage is determined by a combination of low-temperature scanning tunneling microscopy and density functional theory. We demonstrate that the previous assignment of the dark objects in STM to chemisorbed oxygen atoms is incorrect and incompatible with trefoil-like structures observed in atomic-resolution images in current work. In our model, each object is an oxidelike ring formed by six oxygen atoms around the vacancy in Ag(111).
Collapse
Affiliation(s)
- B V Andryushechkin
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - V M Shevlyuga
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - T V Pavlova
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - G M Zhidomirov
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
- G.K.Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospect Lavrentieva 5,630090 Novosibirsk, Russia
| | - K N Eltsov
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| |
Collapse
|
8
|
Xu X, Du M, Chen T, Xiong S, Wu T, Zhao D, Fan Z. New insights into Ag-doped BiVO4 microspheres as visible light photocatalysts. RSC Adv 2016. [DOI: 10.1039/c6ra20850a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study describes the synthesis of Ag–bismuth vanadate (Ag–BiVO4) microspheres, a highly efficient visible light photocatalyst for the degradation of methylene blue, via a one-step hydrothermal method.
Collapse
Affiliation(s)
- Xuan Xu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment
- Ministry of Education
- Chongqing University
- Chongqing 400045
- China
| | - Mao Du
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment
- Ministry of Education
- Chongqing University
- Chongqing 400045
- China
| | - Tian Chen
- School of Mines
- Key Laboratory of Deep Coal Resource Mining
- Ministry of Education of China
- China University of Mining and Technology
- Xuzhou 221116
| | - Shimin Xiong
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment
- Ministry of Education
- Chongqing University
- Chongqing 400045
- China
| | - Tianhui Wu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment
- Ministry of Education
- Chongqing University
- Chongqing 400045
- China
| | - Deqiang Zhao
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment
- Ministry of Education
- Chongqing University
- Chongqing 400045
- China
| | - Zihong Fan
- College of Environmental and Resources
- Chongqing Technology and Business University
- Chongqing 400067
- China
| |
Collapse
|
9
|
Jones TE, Rocha TCR, Knop-Gericke A, Stampfl C, Schlögl R, Piccinin S. Insights into the Electronic Structure of the Oxygen Species Active in Alkene Epoxidation on Silver. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01543] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Travis E. Jones
- CNR-IOM DEMOCRITOS,
c/o SISSA, via Bonomea 265, I-34136 Trieste, Italy
- Department
of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Tulio C. R. Rocha
- Department
of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Axel Knop-Gericke
- Department
of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Catherine Stampfl
- School
of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Robert Schlögl
- Department
of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Simone Piccinin
- CNR-IOM DEMOCRITOS,
c/o SISSA, via Bonomea 265, I-34136 Trieste, Italy
| |
Collapse
|
10
|
|
11
|
Abstract
A heterogeneous catalyst is a functional material that continually creates active sites with its reactants under reaction conditions. These sites change the rates of chemical reactions of the reactants localized on them without changing the thermodynamic equilibrium between the materials.
Collapse
Affiliation(s)
- Robert Schlögl
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin (Germany) http://www.fhi-berlin.mpg.de http://www.cec.mpg.de; Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim a.d. Ruhr (Germany).
| |
Collapse
|
12
|
Jones TE, Rocha TCR, Knop-Gericke A, Stampfl C, Schlögl R, Piccinin S. Thermodynamic and spectroscopic properties of oxygen on silver under an oxygen atmosphere. Phys Chem Chem Phys 2015; 17:9288-312. [DOI: 10.1039/c5cp00342c] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Comparing experimental and theoretical XPS and XANES suggest that unreconstructed atomic oxygen is not present on the silver surface at oxygen chemical potentials relevant for epoxidation.
Collapse
Affiliation(s)
- Travis E. Jones
- CNR-IOM DEMOCRITOS
- c/o SISSA
- Trieste
- Italy
- Department of Inorganic Chemistry
| | - Tulio C. R. Rocha
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
| | - Axel Knop-Gericke
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
| | | | - Robert Schlögl
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
| | | |
Collapse
|
13
|
Halperin V, Shter GE, Gelman V, Peselev DM, Mann-Lahav M, Grader GS. Catalytic activity of electrospun Ag and Ag/carbon composite fibres in partial methanol oxidation. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01341g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A feasibility of electrospinning in producing of highly active Ag and Ag/carbon fibres based catalysts is demonstrated in methanol partial oxidation process (PMO).
Collapse
Affiliation(s)
- V. Halperin
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - G. E. Shter
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - V. Gelman
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - D. M. Peselev
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - M. Mann-Lahav
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| | - G. S. Grader
- Department of Chemical Engineering
- Technion – Israel Institute of Technology
- Haifa
- Israel
| |
Collapse
|