Institute of Materials Chemistry
> Zum Inhalt

Forschungsgruppenleiter

Univ.Prof. Mag.rer.nat. Dr.rer.nat. Günther Rupprechter

Adresse:
Getreidemarkt 9/165
1060 Wien
Austria

Tel.: +43/1/58801-165100
Fax: +43/1/58801-165980

e-mail: guenther.rupprechter@tuwien.ac.at

Publikationen

A. Overview

My group´s strategy is to study catalytic surface reactions on heterogeneous catalysts via a three-fold approach, employing

1. Model Catalysis and Surface Science
2. (Atomically-precise) Cluster Catalysis
3. Applied (industrial-grade) catalysis

For all, the focus is on examining active functioning catalysts under operando conditions by surface spectroscopy (PM-IRAS, FTIR, ATR, DRIFTS, SFG; NAP-XPS, XANES) and surface microscopy (PEEM, FEM, FIM), preferentially at realistic temperature and (near) atmospheric pressure.

This three-fold approach yields a more “holistic” view of the catalytically relevant atomic and electronic surface structure of catalysts, as well as of molecular details that steer reaction activity and, even more important, reaction selectivity. Comparing single crystals with nanoparticle or cluster model catalysts elucidates the materials gap, and comparing UHV to ambient pressure studies reveals the pressure gap. In particular, synergisms between studies on model and technological catalysts often provide access to atomistic details. Novel approaches to imaging surface reactions (kinetics by imaging) on model catalysts (structure and size libraries) by PEEM/FEM/FIM has turned out particularly powerful. Most studies are performed in lock-step with theory collaborators.

 

Publications  -       Key Publications  -     Reviews and Book Chapters    -   Collaboration Partners 

Surface Sciene Special Issue on “Functional Oxides”
(Edited by U. Diebold and G Rupprechter)
https://www.sciencedirect.com/journal/surface-science/special-issue/10NBG6M0BCF

 

Recently studied systems, from single crystals to industrial catalysts, include:

  • i ) high pressure CO-induced roughening of Cu(100) enables CO dissociation (PM-IRAS, XPS, TPD, LEED, DFT) J. Phys. Chem. C 123 (2019) 8112-8121
  • ii) CO2 activation by H2O on ultrathin ZrO2 trilayer (O-Zr-O) film on Pt3Zr(0001) (NAP-XPS, PM-IRAS) Surf. Sci. 679 (2019) 139–146
  • iii) CO oxidation on ALD-grown Pt/ZrO2 model catalysts (SFG, NAP-XPS, MS, TEM) Top. Catal. 61 (2018) 751-762
  • iv) CO oxidation and H2 oxidation on polycrystalline Pt, Pd and Rh surfaces, as well as oxide supported Pd and Rh particles (PEEM, MS, XPS, AFM, EBSD) Nat. Mat. 17 (2018) 519-522; Nat. Comms 9 (2018) 600; Catal. Lett. 148 (2018) 2947-2956, Surf. Sci. 679 (2019) 163–168
  • v) methane dry reforming on ZrO2/Pt(111) inverse model catalysts (NAP-XPS, IRAS, TPD) J. Phys.: Cond. Matt. 30 (2018) 264007 (1-12)
  • vi) 1-butene isomerization/hydrogenation on Pd single crystals (LEED, batch reactor kinetics (GC), DFT, mikrokinetic modeling) ACS Catalysis 8 (2018) 5675-5685
  • vii) electrochemical water splitting and CO2 electrolysis on perovskite-type thin film (PLD) electrodes under potential control (NPA-XPS, impedance) Angew. Chem. Int. Ed., 54 (2015) 2628-2632; ACS Appl. Mat. & Interf. 9 (2017) 35847-35860
  • viii) characterization and gas phase or liquid phase reactions on thiloate-protected Au25, Au38 and Au144 clusters on CeO2, TiO2, SiO2 and Al2O3 (XANES, XPS, ATR, TEM) ChemCatChem 10 (2018) 5372-5376; DOI: 10.1016/j.cattod.2018.12.013
  • ix) CO oxidation and H2/CO/O2 reaction (PROX) on industrial-grade cobalt oxides (XAS, NAP-XPS, FTIR, TEM) ACS Catal. 8 (2018) 8630-8641, J. Catal. 344 (2016) 1-15.

 

From left to right: Thomas Haunold, Christoph Rameshan, Abdul Motin, Abhijit Bera, Matteo Roiaz, Noelia Barrabes, Günther Rupprechter, Xia Li, Kresimir Anic, Clara Garcia, Nevzat Yigit, Vera Truttmann, Klaus Dobrezberger, Verena Pramhaas, Andreas Nagl, Ulrike Prohaska

Rupprechter Research Group
Model Catalysis and Applied Catalysis

B. Research Directions

1. Model Catalysis and Surface Science
(FWF funded projects: SFB FOXSI, DK+ Solids4Fun, ComCat, DryRef)

Surface Spectroscopy
Model catalysts such as single crystals, thin films, polycrystalline foil and supported nanoparticles are prepared in UHV and characterized by XPS, (PM-)IRAS, SFG, STM, LEED, AES, LEIS, TPD, etc. After transfer into UHV-compatible high pressure cells (“Rupprechter design”), operando studies of the catalytically active surfaces are performed by polarization-modulation infrared reflection absorption spectroscopy (PM-IRAS) and sum frequency generation (SFG) laser spectroscopy. Near atmospheric pressure X-ray photoelectron spectroscopy (NAP-XPS) and X-ray absorption (XAS) are performed at various synchrotron sources.

Surface Microscopy
To image ongoing surface reactions (fronts and oscillatory behavior) by in situ spatially-resolved surface microscopy, photoemission electron microscopy (PEEM) is applied to polycrystalline foil, thin films and oxide supported (micrometre) particles, with averaging (global) catalytic data recorded by MS. Field electron/ion microscopy (FEM/FIM) is utilized to image reactions on blunt and nanotips.       

Publications      -   Collaboration_Partners 

Instrumentation
PM-IRAS: UHV chamber (LEED, AES, TPD, XPS) with high pressure cell (PM-IRAS, MS)
SFG: UHV chamber (LEED, AES, TPD) with high pressure cell (SFG, MS)
STM: UHV chamber (LEED, XPS, LEIS, TPD) with VT-STM
Microreactor: UHV chamber (sample preparation) with flow-microreactor (GC, MS)
PEEM: UHV chamber (LEED, XPS, MIES, MS) with PEEM
FEM/FIM: UHV chamber (MS) with FEM/FIM

Joint activities with Univ.Ass. Dr. Christoph Rameshan (Habilitation)

Joint activities with Assoc.Prof. Yuri Suchorski

 

Group members
Dr. Verena Pramhaas, Postoc
Dr. Xia Li, Postdoc
Thomas Haunold, PhD Student

Former group members
Dr. Motin Md. Abdul (Postdoc)
Dr. Matteo Roiaz (Ph.D. Student)
Dr. Kresimir Anic (Ph.D. Student)
Dr. Abhijit Bera (Postdoc)
Dr. Andrey Bukhtiyarov (Postdoc)
Dr. Hao Li (Ph.D. Student)
Dr. Christian Weilach (Postdoc)
Dr. Harald Helmuth Holzapfel (Ph.D. Student)
Dr. Athula Bandara (Postoc) 


2. (Atomically-Precise) Cluster Catalysis

(FWF funded projects: DK+ Solids4Fun, ComCat)

Metal clusters are synthesized with precise atomic number (< 100 atoms, e.g. Au25, Au38 or Au144) and, when deposited on a support (CeO2, TiO2, SiO2, Al2O3), comprise truly monodisperse catalysts. The catalytic properties of clusters are often unique, due to their quantized electronic structure and specific atomic structure, and may differ strongly from those of larger nanoparticles (> 100 atoms). The possibility of creating atomically precise and even doped nanoclusters should finally lead to improved catalysts and a better understanding of nanocatalysis. Operando XAS studies are performed at various synchrotron sources.

Publications     -      Collaboration Partners

Instrumentation

  • DRIFTS, ATR, UV-Vis, PL, SEC, reactors, GC, MS, Langmuir-Blodgett, STEM

Joint activities with Univ.Ass. Dr. Noelia Barrabes (Habilitation)

Group members
Clara Garcia-Yago (PhD Student)
Stephan Pollitt (PhD Student)
Vera Truttmann (PhD Student)

 

3. Applied (industrial-grade) Catalysts

(FWF funded projects: SFB FOXSI, DK+ Solids4Fun, ComCat, DryRef)

Studies of technological (industrial grade “powder”) catalysts in (automated) continuous-flow fixed-bed quartz reactors under atmospheric pressure. Spectroscopic studies are preferentially performed under operando conditions, by Fourier transform infrared spectroscopy (FTIR), diffuse reflectance infrared fourier transform spectroscopy (DRIFTS), X-ray absorption spectroscopy (XAS), near atmospheric pressure X-ray photoelectron spectroscopy (NAP-XPS), and X-ray diffraction (XRD). Most of the operando studies are performed at synchrotron sources.

Publications     -   Collaboration Partners

Instrumentation

  • FTIR, DRIFTS, ATR, chemisorption, BET, TPD/O/R, UV-Vis, PL, various (automated) flow reactors (GC, MS)

Joint activities with Assoc. Prof. Dr. Karin Föttinger

Group members
Dr. Nevzat Yigit (Postdoc)
Klaus Dobrezberger (PhD Student)

Former group members
Dr. Liliana Lukashuk (PhD Student)
Dr. Astrid Wolfbeisser (PhD Student)
Dr. Andreas Haghofer (PhD Student)
Dr. Katrin Zorn (PhD Student)
Elisabeth Kolar (Master Student)
Waltraud Emhofer (Master Student)

C. Collaboration Partners

1. Model Catalysis and Surface Science - Collaboration Partners

Prof. Robert Schlögl, Dr. Axel Knop-Gericke (Department of Inorganic Chemistry, Fritz Haber Institute, Berlin, Germany): In situ synchrotron NAP-XPS (BESSY II) at mbar pressure for monitoring UHV-grown and powder catalysts under reaction conditions

Prof. Valerii Bukhtiyarov and Dr. Andrey Bukhtiyarov
(Boreskov Institute of Catalysis, Novosibirsk, Russia): In situ lab-based NAP-XPS at mbar pressure for monitoring UHV-grown catalysts under reaction conditions

Prof. Jörg Libuda (University Erlangen-Nuremberg): IRAS, XPS and molecular beam studies on complex planar model catalysts

Prof. Erik Vesselli (Dipartimento di Fisica, Università degli Studi di Trieste / IOM-CNR Laboratorio TASC): SFG studies on model catalysts and 2D crystals

Assoz. Prof. Bernhard Klötzer (Institut für Physikalische Chemie, Universität Innsbruck, Austria): NAP-XPS studies on model and technological catalysts

Prof. Jürgen Fleig (Institute of Chemical Technologies and Analytics, Electrochemistry Devision, Technische Universität Wien, Austria): NAP-XPS studies of model solid oxide fuel/electrolysis cells (perovskite thin films): water splitting and CO2 electrolysis

Prof. Andreas Stierle (DESY Nanolab and University of Hamburg, Germany): Surface X-ray diffraction 

2. Cluster Catalysis - Collaboration Partners

Prof. Thomas Bürgi (Department of Physical Chemistry, University of Geneva, Switzerland): PM-IRAS and synchrotron studies of cluster catalysts

Prof. Yuichi Negishi (Department of Applied Chemistry, Tokyo University of Science, Japan): Synthesis and synchrotron studies of bi-/tri-metallic cluster catalysts  

3. Applied Catalysis - Collaboration Partners

Prof. Robert Schlögl, Dr. Axel Knop-Gericke (Department of Inorganic Chemistry, Fritz Haber Institute, Berlin, Germany): In situ synchrotron NAP-XPS (BESSY II) at mbar pressure for monitoring powder catalysts under reaction conditions

Assoc. Prof. Dr. Paisan Kongkachuichay and Dr. Metta Chareonpanich (Department of Chemical Engineering, Kasetsart University, Bangkok, Thailand): Cu- and Ni-based catalysts for water gas shift, CO2 hydrogenation and SCR

Assoc. Prof. Jingxia Yang (College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science): CeO2 catalysis

Prof. David Lennon (Department of Chemistry, University of Glasgow, UK): IR spectroscopy and reactions on powder catalysts

Dr. Davide Ferri (Paul-Scherrer-Institute): Concentration-modulation FTIR experiments on powder samples

Prof. Jeroen van Bokhoven (ETH Zurich and PSI). XAS spectroscopy on powder catalysts under operando conditions  

4. Theory - Collaboration Partners

Prof. Konstantin Neyman (Departament de Química Física & Institut de Química Teòrica i Computacional (IQTC-UB), Universitat de Barcelona, Spain): DFT calculations of the structure and adsorption/reactions on bimetallic surfaces

Prof. Henrik Grönbeck (Centre for Catalysis and Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden): DFT calculations of the structure and adsorption/reactions on metal, oxide and metal-oxide surfaces and interfaces; microkinetic modeling of kinetic phase diagrams and oscillatory reactions

Prof. Dr. Dr.h.c. Notker Rösch, FRSC (Department Chemie, Technische Universität München TUM, Garching, Germany): DFT and microkinetic modeling of isomerisation/hydrogeantion on model catalysts

Dr. Sergey M. Kozlov (King Abdullah University of Science and Technology (KAUST), Saudi Arabia): DFT studies of CO adsorption on Cu clusters, steps and terraces

Prof. Peter Blaha (IMC, TU Wien): DFT studies of Co-oxide and metal-ceria interfaces

FWF SFB FOXSI (Functional Oxide Surfaces and Interfaces)
http://foxsi.tuwien.ac.at/ 

Surface Sciene Special Issue on “Functional Oxides”
https://www.sciencedirect.com/journal/surface-science/special-issue/10NBG6M0BCF
(Edited by U. Diebold and G. Rupprechter)

D. Publications

1. Model Catalysis and Surface Science - Publications

A modeling analysis of molecular orientation at interfaces by polarization-dependent sum frequency generation vibrational spectroscopy
X. Li, G. Rupprechter
Chinese Journal of Catalysis (2019) in press

Roughening of Copper (100) at elevated CO pressure: Cu adatom and cluster formation enable CO dissociation
M. Roiaz, L. Falivene, C. Rameshan, L. Cavallo, S.M. Kozlov, G. Rupprechter
Journal of Physical Chemistry C 123 (2019) 8112-8121 (Hybrid OA)
DOI: 10.1021/acs.jpcc.8b07668

Surface structure libraries: Multifrequential oscillations in catalytic hydrogen oxidation on rhodium
Y. Suchorski, M. Datler, I. Bespalov, J. Zeininger, M. Stöger-Pollach, J. Bernardi, H. Grönbeck, G. Rupprechter
Journal of Physical Chemistry C, 123 (2019) 4217-4227 (OA)
DOI:10.1021/acs.jpcc.8b11421 (Hybrid OA)

Surface science of functional oxides (Preface)
U. Diebold, G. Rupprechter
Surface Science Science 681 (2019) A1
DOI: 10.1016/j.susc.2018.11.017

Transmitting metal-oxide interaction by solitary chemical waves: H2 oxidation on ZrO2 supported Rh
Y. Suchorski, M. Datler, I. Bespalov, C. Freytag, J. Zeininger, G. Rupprechter
Surface Science 679 (2019) 163-168
DOI: 10.1016/j.susc.2018.08.027 (Hybrid OA)

CO2 activation on ultrathin ZrO2 film by H2O co-adsorption: In situ NAP-XPS and IRAS studies
H. Li, C. Rameshan, A.V. Bukhtiyarov, I.P. Prosvirin, V.I. Bukhtiyarov, G. Rupprechter
Surface Science 679 (2019) 139-146
DOI: 10.1016/j.susc.2018.08.028 (Hybrid OA)

The chemical evolution of the La0.6Sr0.4CoO3- surface under SOFC operating conditions and its implications for electrochemical oxygen exchange activity
A.K. Opitz, C. Rameshan, M. Kubicek, G.M. Rupp, A. Nenning, T. Götsch, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, B. Klötzer, J. Fleig
Topics in Catalysis 61 (2018) 2129-2124
DOI: 10.1007/s11244-018-1068-1 (Hybrid OA)

Vibrational fingerprint of localized excitons in a two-dimensional metal-organic crystal
M. Corva, A. Ferrari, M. Rinaldi, Z. Feng, M. Roiaz, C. Rameshan, G. Rupprechter, R. Constantini, M. Dell´Angela, G. Pastore, G. Comelli, N. Seriani, E. Vesselli
Nature Communications 9 (2018) 4703
DOI: 10.1038/s41467-018-07190-1 (OA)
Press release: www.tuwien.ac.at/aktuelles/news_detail/article/126313/

Polykristalline Oberflächen als Strukturbibliothek
Y. Suchorski, G. Rupprechter
Nachrichten aus der Chemie 66 (2018) 851-856
DOI: 10.1002/nadc.20184075554

Heterogeneous surfaces as structure and particle size libraries of model catalysts
Y. Suchorski, G. Rupprechter
Catalysis Letters 148 (2018) 2947-2956
DOI: 10.1007/s10562-018-2506-1 (Hybrid OA)

In situ NAP-XPS spectroscopy during methane dry reforming on ZrO2/Pt(111) inverse model catalyst
C. Rameshan, H. Li, K. Annic, M. Roiaz, V. Pramhaas, R. Rameshan, R. Blume, M. Hävecker, R.J. Knudsen, A. Knop-Gericke, G. Rupprechter
Journal of Physics: Condensed Matter 30 (2018) 264007 (12pp)
DOI:10.1088/1361-648X/aac6ff (Hybrid OA)

Catalytic transformations of 1-Butene over palladium. A combined experimental and theoretical study
V. Markova, J. Philbin, W. Zhao, A. Genest, J. Silvestre-Albero, G. Rupprechter, N. Rösch
ACS Catalysis 8 (2018) 5675-5685
DOI: 10.1021/acscatal.8b01013

The role of metal/oxide interfaces for long-range metal particle activation during CO oxidation
Y. Suchorski, S.M. Kozlov, I. Bespalov, M. Datler, D. Vogel, Z. Budinska, K.M. Neyman, G. Rupprechter
Nature Materials 17 (2018) 519-522
DOI:10.1038/s41563-018-0080-y
Press release: www.tuwien.ac.at/en/news/news_detail/article/125833/

Polarization-dependent SFG spectroscopy of near ambient pressure CO adsorption on Pt(111) and Pd(111) revisited
X. Li, M. Roiaz, V. Pramhaas, C. Rameshan, G. Rupprechter
Topics in Catalysis 61 (2018) 751-762
DOI: 10.1007/s11244-018-0949-7 (Hybrid OA)

Atmospheric pressure reaction cell for operando sum frequency generation spectroscopy of ultrahigh vacuum grown model catalysts
M. Roiaz, V. Pramhaas, X. Li, C. Rameshan, G. Rupprechter
Review of Scientific Instruments 89 (2018) 045104 (10pp)
DOI: 10.1063/1.5021641 (Hybrid OA)

Visualizing catalyst heterogeneity by a multifrequential oscillating reaction
Y. Suchorski, M. Datler, I. Bespalov, J. Zeininger, M. Stöger-Pollach, J. Bernardi, H. Grönbeck, G. Rupprechter
Nature Communications 9 (2018) 1-6
DOI: 10.1038/s41467-018-03007-3 (Gold OA)
Press release: www.tuwien.ac.at/en/news/news_detail/article/125613/

Surface science approach to Pt/carbon model catalysts: XPS, STM and microreactor studies
A. Motin, T. Haunold, A.V. Bukhtiyarov, A. Bera, C. Rameshan, G. Rupprechter
Applied Surface Science 440 (2018) 680-687
DOI: 10.1016/j.apsusc.2018.01.148 (Hybrid OA)

Surface science studies of the diffusion of adsorbed and intercalated lithium
Y. Suchorski, G. Rupprechter
Solid State Ionics 316 (2018) 143-152
DOI: 10.1016/j.ssi.2017.12.011

Surface chemistry of perovskite-type electrodes during high temperature CO2 electrolysis investigated by operando photoelectron spectroscopy
A.K. Opitz, A. Nenning, C. Rameshan, M. Kubicek, T. Götsch, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, B. Klötzer, J. Fleig
ACS Applied Materials & Interfaces 9 (2017) 35847-35860
DOI: 10.1021/acsami.7b10673 (Hybrid OA)

Supported liquid metal catalysts: Popping up to the surface
G. Rupprechter
Nature Chemistry 9 (2017) 833-834 (invited)
DOI: 10.1038/nchem.2849

Hydrogen oxidation on stepped Rh surfaces: µm-scale versus nanoscale
M. Datler, I. Bespalov, S. Buhr, J. Zeininger, M. Stöger-Pollach, J. Bernardi, G. Rupprechter, Y. Suchorski
Catalysis Letters 146 (2016) 1867-1874
DOI: 10.1007/s10562-016-1824-4 (Hybrid OA)

CO Adsorption on reconstructed Ir (100) surfaces from UHV to mbar pressure: A LEED, TPD and PM-IRAS study
K. Anic, A.V. Bukhtiyarov, H. Li, C. Rameshan, G. Rupprechter
Journal of Physical Chemistry C 120 (2016) 10838-10848
DOI:10.1021/acs.jpcc.5b12494

Surface spectroscopy on UHV-grown and technological Ni-ZrO2 reforming catalysts: From UHV to operando conditions
K. Anic, A. Wolfbeisser, H. Li, C. Rameshan, K. Föttinger, J. Bernardi, G. Rupprechter
Topics in Catalysis 59 (2016) 1614-1627
DOI: 10.1007/s11244-016-0678-8 (Hybrid OA)

Ambient Pressure XPS study of mixed conducting perovskite-type SOFC cathode and anode materials under well-defined electrochemical polarization
A. Nenning, A.K. Opitz, C. Rameshan, R. Rameshan, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, B. Klötzer, J. Fleig
Journal of Physical Chemistry C 120 (2016) 1461-1471
DOI: 10.1021/acs.jpcc.5b08596 (Hybrid OA)

Water splitting on model-composite La0.6Sr0.4FeO3-δ (LSF) electrodes in H2/H2O atmosphere
A.K. Opitz, A. Nenning, S. Kogler, C. Rameshan, R. Rameshan, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, B. Klötzer, J. Fleig
ECS Transactions 68 (2015) 3333-3343
DOI: 10.1149/06801.3333ecst (Hybrid OA)

Local reaction kinetics by imaging
Y. Suchorski, G. Rupprechter
Surface Science 643 (2016) 52-58
DOI: 10.1016/j.susc.2015.05.021 (Hybrid OA)

Spatially coupled catalytic ignition of CO oxidation on Pt: Mesoscopic versus nano-scale
C. Spiel, D. Vogel, R. Schlögl, G. Rupprechter, Y. Suchorski
Ultramicroscopy 159 (2015) 178-183
DOI: 10.1016/j.ultramic.2015.05.012 (Hybrid OA)

Initial stages of oxide formation on the Zr surface at low oxygen pressure: An in situ FIM and XPS study
I. Bespalov, M. Datler, S. Buhr, W. Drachsel, G. Rupprechter, Y. Suchorski
Ultramicroscopy 159 (2015) 147-151
DOI: 10.1016/j.ultramic.2015.02.016 (Hybrid OA)

Analysing the reaction kinetics for individual catalytically active components: CO oxidation on a Pd powder supported by Pt foil
M. Datler, I. Bespalov, G. Rupprechter, Y. Suchorski
Catalysis Letters 145 (2015) 1120-1125
DOI: 10.1007/s10562-015-1486-7 (Hybrid OA)

Growth of an ultrathin zirconia film on Pt3Zr examined by high-resolution X-ray photoelectron spectroscopy, temperature-programmed desorption, scanning tunneling microscopoy and density functional theory
H. Li, J.J. Choi, W. Mayr-Schmölzer, C. Weilach, C. Rameshan, F. Mittendorfer, J. Redinger, M. Schmid, G. Rupprechter
Journal of Physical Chemistry C 119 (2015) 2462-2470
DOI: 10.1021/jp5100846 (Hybrid OA)

Beschleunigung der elektrochemischen Wasserspaltungskinetik durch polarisations-getriebene Bildung von oberflächennahem Eisen(0): Eine in-situ XPS Studie an Perowskit-Elektroden
K. Opitz, A. Nenning, C. Rameshan, R. Rameshan, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, J. Fleig, B. Klötzer
Angewandte Chemie 127 (2015) 2666-2670
DOI: 10.1002/ange.201409527 (Hybrid OA)

Enhancing electrochemical water-splitting kinetics by polarization-driven formation of near-surface Iron(0): An in-situ XPS study on perovskite-type electrodes
A.K. Opitz, A. Nenning, C. Rameshan, R. Rameshan, R. Blume, M. Hävecker, A. Knop-Gericke, G. Rupprechter, J. Fleig, B. Klötzer
Angewandte Chemie International Edition 54 (2015) 2628-2632
DOI: 10.1002/anie.201409527 (Hybrid OA)
Press release: www.tuwien.ac.at/aktuelles/news_detail/article/9312/

PdZn surface alloys as models of methanol steam reforming catalysts: Molecular studies by LEED, XPS, TPD and PM-IRAS
H.H. Holzapfel, A. Wolfbeisser, C. Rameshan, C. Weilach, G. Rupprechter
Topics in Catalysis 57 (2014) 1218-1228
DOI: 10.1007/s11244-014-0295-3

 

2. Cluster Catalysis - Publications

Ligand Engineering with Immobilized Nanoclusters on Surfaces: Ligand Exchange Reactions with Supported Au11(PPh3)7Br3
V. Truttmann, I. Illes, A. Limbeck, E. Pittenauer, M. Stöger-Pollach, G. Allmaier, T. Bürgi, N. Barrabés, G. Rupprechter
ACS Nano, submitted

Ligand and support effects on the reactivity and stability of Au38(SR)24 catalysts in oxidation reactions
B. Zhang, A. Sels, S. Pollitt, G. Salassa, C. García, C. Rameshan, J. Llorca, K. Hradil, G. Rupprechter, N. Barrabés and T. Bürgi
Catalysis Communications, submitted

Support effect on the reactivity and stability of Au25(SR)18 and Au144(SR)60 nanoclusters in liquid phase cyclohexane oxidation
C. García, S. Pollitt, M. van der Linden, V. Truttmann, M. Stöger-Pollach, N. Barrabés, G. Rupprechter
Catalysis Today accepted
DOI : 10.1016/j.cattod.2018.12.013

Ligand migration from cluster to support: A crucial factor for catalysis by thiolate-protected gold clusters
B. Zhang, A. Sels, G. Salassa, S. Pollitt, V. Truttmann, C. Rameshan, J. Llorca, W. Olszewski, G. Rupprechter, T. Bürgi, N. Barrabés
ChemCatChem 10 (2018) 5372-5376
DOI: 10.1002/cctc.201801474 (Hybrid OA)

On the mechanism of rapid metal exchange between thiolate-protected gold and gold/silver clusters: a time-resolved in situ XAFS study
B. Zhang, O. Safonova, S. Pollitt, G. Salassa, R. Kazan, Y. Wang, G. Rupprechter, N. Barrabés-Rabanal, T. Bürgi
Physical Chemistry Chemical Physics 20 (2018) 5312-5318
DOI: 10.1039/c7cp08272j

Synthesis and Properties of monolayer protected Cox(SC2H4Ph)m nanoclusters
S. Pollitt, E. Pittenauer, C. Rameshan, T. Schachinger, O. Safonova, V. Truttmann, A. Bera, G. Allmaier, N. Barrabés, G. Rupprechter
Journal of Physical Chemistry C 121 (2017) 10948-10956
DOI: 10.1021/acs.jpcc.6b12076 (Green OA)

Structural investigation of ligand exchange reaction with rigid dithiol on doped (Pt, Pd) Au25 clusters
A. Sels, G. Salassa, S. Pollit, C. Guglieri, G. Rupprechter, N. Barrabés, T. Bürgi
Journal of Physical Chemistry C 121 (2017) 10919-10926
DOI: 10.1021/acs.jpcc.6b12066

 

3. Applied Catalysis - Publications

Pore size effects on physicochemical properties of Fe-Co/K-Al2O3 catalysts and their catalytic activity in CO2 hydrogenation to light olefins
T. Numpilai, N. Chanlek, Y. Poo-Arpom, S. Wannapaiboon, C.K. Cheng, N. Siri-Nguan, T. Somcharnni, P. Kongkachuichay, M. Chareonpanich, G. Rupprechter, J. Limtrakul, T. Witoon
Applied Surface Science 483 (2019) 581–592
DOI: 10.1016/ j.apsusc.2019.03.331

Operando XAS and NAP-XPS investigation of CO oxidation on meso- and nanoscale CoO catalysts
L. Lukashuk, N. Yigit, H. Li, J. Bernardi, K. Föttinger, G. Rupprechter
Catalysis Today article in press
DOI : 10.1016/j.cattod.2018.12.052

Roles of ZnO in Cu/Core−Shell Al−MCM-41 for NO reduction by selective catalytic reduction with NH3: The effects of metal loading and Cu/ZnO ratio
T. Imyen, W. Limphirat, G. Rupprechter, P. Kongkachuichay
ACS Omega 4 (2019) 1077-1085 (OA)
DOI: 10.1021/acsomega.8b02741

Promotional effects of Zn doping on Cu/Core-Shell Al-MCM-41 for selective catalytic reduction of NO with NH3
T. Imyen, N. Yigit, Y. Poo-Arporn, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Journal of Nanoscience and Nanotechnology 19 (2019) 743-757
DOI: 10.1166/jnn.2019.15756

Carbon-based SILP catalysis for the selective hydrogenation of aldehydes using a well-defined Fe(II) PNP complex
R. Castro-Amoedo, Z. Csendes, J. Brünig, M. Sauer, A. Foelske-Schmitz, N. Yigit, G. Rupprechter, T. Gupta, A.M. Martins, K. Bica, H. Hoffmann, K. Kirchner
Catalysis Science & Technology 8 (2018) 4812-4820
DOI: 10.1039/c8cy00818c

Operando insights into CO oxidation on cobalt oxide catalysts by NAP-XPS, FTIR and XRD
L. Lukashuk, N. Yigit, R. Rameshan, E. Kolar, D. Teschner, M. Hävecker, A. Knop-Gericke, R. Schlögl, K. Föttinger, G. Rupprechter
ACS Catalysis 8 (2018) 8630−8641
DOI:10.1021/acscatal.8b01237 (Hybrid OA)

Large dimensional CeO2 nanoflakes by microwave-assisted synthesis: Lamellar nano-channels and surface oxygen vacancies promote catalytic activity
H. Ding, J. Yang, S. Ma, N. Yigit, J. Xu, G. Rupprechter, J. Wang
ChemCatChem 10 (2018) 4100-4108
DOI: 10.1002/cctc.201800784

Role of copper and cerium on core-Shell AI-MCM-41 in NO reduction via a SCR-CH4
T. Intana, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Journal of Nanoscience and Nanotechnology 18 (2018) 132-142
DOI: 10.1166/jnn.2018.14583

Adsorption and reaction of CO on (Pd-)Al2O3 and (Pd-)ZrO2: Vibrational spectroscopy of carbonate formation
K. Föttinger, W. Emhofer, D. Lennon, G. Rupprechter
Topics in Catalysis 60 (2017) 1722-1734
DOI: 10.1007/s11244-017-0852-7 (Hybrid OA)

Novel visible-light-sensitized Chl-Mg/P25 catalysts for photocatalytic degradation of rhodamine B
T. Phongamwong, W. Donphai, P. Prasitchoke, C. Rameshan, N. Barrabés, W. Klysubun, G. Rupprechter, M. Chareonpanich
Applied Catalysis B Environmental 207 (2017) 326-334
DOI: 10.1016/j.apcatb.2017.02.042

Cleaner production of methanol from CO2 over xCu-yFe/MCM-41 catalysts using innovative integrated magnetic field-packed bed reactor
S. Kiatphuengporn, W. Donphai, P. Jantaratana, N. Yigit, K. Föttinger, G. Rupprechter, M. Chareonpanich
Journal of Cleaner Production, 142 (2017) 1222-1233
DOI: 10.1016/j.jclepro.2016.08.086

Surface composition changes of CuNi-ZrO2 during methane decomposition: An operando NAP-XPS and density functional study
A. Wolfbeisser, G. Kovács, S.M. Kozlov, K. Föttinger, J. Bernardi, B. Klötzer, K.M. Neyman, G. Rupprechter
Catalysis Today, 283 (2017) 134-143
DOI: 10.1016/j.cattod.2016.04.022 (Hybrid OA)

Characterization of Cu-Zn/core-shell Al-MCM-41 as a catalyst for reduction of NO: effect of Zn promoter
T. Imyen N. Yigit, P. Dittanet, N. Barrabés-Rabanal, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Industrial & Engineering Chemistry Research 55 (2016) 13050-13061
DOI: 10.1021/acs.iecr.6b03990

Application of differential PDF to the structural characterization of supported catalysts
M. Sommariva, N. Dadivanyan, M. Gateshki, M. Rayner, L. Lukashuk, G. Rupprechter, K. Föttinger
Acta Physica Polonica A 130 (2016) 884-885
DOI: 10.12693/APhysPolA.130.884

Operando XAS and NAP-XPS studies of preferential CO oxidation on Co3O4 and CeO2-Co3O4 catalysts
L. Lukashuk, K. Föttinger, E. Kolar, C. Rameshan, D. Teschner, M. Hävecker, A. Knop-Gericke, N. Yigit, H. Li, E. McDermott, M. Stöger-Pollach, G. Rupprechter
Journal of Catalysis 344 (2016) 1-15
DOI: 10.1016/j.jcat.2016.09.002

Methane dry reforming over ceria-zirconia supported Ni catalysts
A. Wolfbeisser, O. Sophiphun, J. Bernardi, J. Wittayakun, K. Föttinger, G. Rupprechter
Catalysis Today 277 (2016) 234-245
DOI: 10.1016/j.cattod.2016.04.025 (Hybrid OA)

Surface spectroscopy on UHV-grown and technological Ni-ZrO2 reforming catalysts: From UHV to operando conditions
K. Anic, A. Wolfbeisser, H. Li, C. Rameshan, K. Föttinger, J. Bernardi, G. Rupprechter
Topics in Catalysis 59 (2016) 1614-1627
DOI: 10.1007/s11244-016-0678-8 (Hybrid OA)

Decrement of coke from phenol hydroxylation on iron on zeolite beta by employing dealuminated support
O. Sophiphun, D. Demir, K. Föttinger, G. Rupprechter, S. Loiha, A. Neramittagapong,
S. Prayoonpokarach, J. Wittayakun
Reaction Kinetics, Mechanisms and Catalysis 117 2 (2016) 705-713
DOI: 10.1007/s11144-015-0971-8

Synthesis of copper-nickel/SBA-15 from rice husk ash catalyst for dimethyl carbonate production from methanol and carbon dioxide
S. Pimprom, K. Sriboonkham, P. Dittanet, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Journal of Industrial and Engineering Chemistry 31 (2015) 156-166
DOI: 10.1016/j.jiec.2015.06.019

Properties and catalytic performance in phenol hydroxylation of iron on zeolite beta prepared by different methods
O. Sophiphun, K. Föttinger, S. Loiha, A. Neramittagapong, S. Prayoonpokarach, G. Rupprechter, J. Wittayakun
Reaction Kinetics, Mechanisms and Catalysis 116 (2015) 549-561
DOI: 10.1007/s11144-015-0908-2

Ni-CeO2-ZrO2 catalysts for water gas shift reaction: Effect of CeO2 contents and reduction temperature
B. Chamnankid, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Journal of Nanoscience and Nanotechnology, 16 (2016) 12904-12909
DOI: 10.1166/jnn.2016.13798

Surface modification processes during methane decomposition on Cu-promoted Ni-ZrO2 catalysts
A. Wolfbeisser, B. Klötzer, L. Mayr, R. Rameshan, D. Zemlyanov, J. Bernardi, K. Föttinger, G. Rupprechter
Catalysis Science & Technology 5 (2015) 967-978
DOI: 10.1039/C4CY00988F (Hybrid OA)

Physicochemical properties of Cu loaded onto core-shell Al-MCM-41: Effect of loading methods
T. Intana, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Colloids and Surfaces A: Physicochemical and Engineering Aspects 467 (2015) 157-165 DOI: 10.1016/j.colsurfa.2014.11.048

Different synthesis protocols for Co3O4-CeO2 catalysts - Part 1: Influence on the morphology on the nanoscale
J. Yang, L. Lukashuk, J. Akbarzadeh, M. Stöger-Pollach, H. Peterlik, K. Föttinger, G. Rupprechter, U. Schubert
Chemistry - A European Journal 21 (2015) 885-892
DOI: 10.1002/chem.201403636 (Hybrid OA)

Cu/Ni-Loaded CeO2-ZrO2 catalyst for the water-gas shift reaction: Effects of loaded metals and CeO2 addition
B. Chamnankid, K. Föttinger, G. Rupprechter, P. Kongkachuichay
Chemical Engineering & Technology 37 (2014) 2129-2134
DOI: 10.1002/ceat.201300869 (Green OA)

In situ spectroscopy of complex surface reactions on supported Pd-Zn, Pd-Ga and Pd(Pt)-Cu nanoparticles
K. Föttinger, G. Rupprechter
Accounts of Chemical Research 47 (2014) 3071-3079
DOI: 10.1021/ar500220v

High surface area ceria for CO oxidation prepared from cerium t-butoxide by combined sol-gel and solvothermal processing
J. Yang, L. Lukashuk, H. Li, K. Föttinger, G. Rupprechter, U. Schubert
Catalysis Letters 144 (2014) 403-412
DOI: 10.1007/s10562-013-1162-8 (Hybrid OA)

Reviews and Book Chapters

Sum frequency generation and second harmonics generation spectroscopy
G. Rupprechter
Encyclopedia of Interfacial Chemistry - Surface Science and Electrochemistry,
K. Wandelt (Editor) Elsevier Oxford 2018 ISBN: 9780128097397, 509-520
DOI:10.1016/B978-0-12-409547-2.12825-2

Surface science approach to heterogeneous catalysis
G. Rupprechter
Textbook on Surface and Interface Science, K. Wandelt (Editor)
Wiley-VCH Weinheim 2016 ISBN: 978-3-527-41158-0, 459-52
DOI: 10.1002/9783527680573.ch39

Sum frequency generation and infrared reflection absorption spectroscopy
K. Föttinger, C. Weilach, G. Rupprechter
Characterization of Solid Materials and Heterogeneous Catalysts: From Structure to Surface Reactivity, M. Che, J. Védrine, (Editors) Wiley-VCH Weinheim 2012
ISBN 978-3-527-32687-7, 211-253
DOI: 10.1002/9783527645329.ch6

Sum frequency generation (SFG) spectroscopy
G. Rupprechter, A. Bandara
Surface and Thin Film Analysis, G. Friedbacher, H. Bubert (Editors)
Wiley-VCH Weinheim 2011 ISBN-10: 3-527-32047-4,
ISBN-13: 978-3-527-32047-9 (invited) 407-435

Sum frequency generation vibrational laser spectroscopy
G. Rupprechter
Encyclopedia of Materials: Science and Technology, J Buschow, R. Cahn, M. Flemings, B. Ilschner, E. Kramer, S. Mahajan, P. Veyssiere (Editors) Elsevier Science Ltd.
Oxford 2010 ISBN: 978-0-08-043152-9 (invited) 1-7

Catalysis of thin oxide films and oxide nanoparticles
G. Rupprechter, S. Penner
Model Systems in Catalysis - Single Crystals to Supported Enzyme Mimics,
Robert M. Rioux (Editor) Springer 2010 ISBN: 978-0-387-98041-6 (invited) 367-394

Catalysis of noble metal nanoparticles supported on thin oxide films
G. Rupprechter
Model Systems in Catalysis - Single Crystals to Supported Enzyme Mimics,
Robert M. Rioux (Editor) Springer 2010 ISBN: 978-0-387-98041-6 (invited) 319-344

Sum frequency generation and polarization-modulation infrared reflection absorption spectroscopy of functioning model catalysts from ultrahigh vacuum to ambient pressure
G. Rupprechter
Advances in Catalysis, H. Knözinger, B. Gates (Editors) Elsevier Inc. 2007
ISSN: 0360-0564 (invited) 133-263

Adsorbate properties of linear hydrocarbons
G. Rupprechter, G.A. Somorjai
Landolt-Börnstein Physics of Covered Solid Surfaces, I. Adsorbed Layers on Surfaces, H.P. Bonzel (Editor) Springer Berlin 2006 (invited) 243-330

Surface vibrational spectroscopy on noble metal catalysts from ultrahigh vacuum to atmospheric pressure
G. Rupprechter
Annual Reports on the Progress of Chemistry, Section C (Physical Chemistry), G. Webb (Editor) Royal Society of Chemistry 2004 (invited) 237-311

Further Reading

In situ spectroscopy of complex surface reactions on supported Pd-Zn, Pd-Ga and Pd(Pt)-Cu nanoparticles
K. Föttinger, G. Rupprechter
Accounts of Chemical Research 47 (2014) 3071-3079
DOI: 10.1021/ar500220v

Vibrational studies of surface-gas interactions at ambient pressure
G. Rupprechter, C. Weilach
J. Phys.: Condens. Matter 20 (2008) 184020

G. Rupprechter
Sum frequency laser spectroscopy during chemical reactions on surfaces
MRS (Materials Research Society) Bulletin, 32 (2007) 1031-1037.

G. Rupprechter, C. Weilach
Mind the gap! Spectroscopy of catalytically active phases
Nano Today, 2 (2007) 20-29

G. Rupprechter
A Surface Science Approach to Ambient Pressure Catalytic Reactions
Catalysis Today, 126 (2007) 3-17

H.-J. Freund, M. Bäumer, J. Libuda, T. Risse, G. Rupprechter, S. Shaikhutdinov
Preparation and characterization of model catalysts: From ultrahigh vacuum to in-situ conditions at the atomic dimension
Journal of Catalysis, 40th Anniversary Commemorative Issue, 216 (2003) 223

G.A. Somorjai, G. Rupprechter
Molecular studies of catalytic reactions on crystal surfaces at high pressures and high temperatures by infrared-visible sum frequency generation (SFG) surface vibrational spectroscopy
Journal of Physical Chemistry B, 103 (1999) 1623 (Feature Article)

G.A. Somorjai, G. Rupprechter
The flexible surface: Molecular studies explain the extraordinary diversity of surface chemical properties
(Foreword by Nobel Laureate Glenn T. Seaborg)
Journal of Chemical Education, 75th Anniversary Issue,75 (1998) 161

Guest Editor of

Surface Sciene Special Issue on “Functional Oxides”
(jointly with U. Diebold)
Preface : Surface Science Science 681 (2019) A1
DOI: 10.1016/j.susc.2018.11.017
https://www.sciencedirect.com/journal/surface-science/special-issue/10NBG6M0BCF

Konrad Hayek Festschrift: Catalysis on well-defined surfaces: From single crystals to regular nanoparticles
Topics in Catalysis 46 (2007) 1-245