Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

In-situ probing of the Fischer-Tropsch reaction on Co single crystal surfaces up to 1 bar

Journal Article · · Nature Communications
 [1];  [2];  [3];  [2];  [4];  [2];  [5];  [6];  [7];  [2];  [2];  [8];  [9];  [5];  [10];  [5];  [5];  [5];  [5];  [9] more »;  [5];  [2] « less
  1. Stockholm Univ. (Sweden); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Stockholm Univ. (Sweden)
  3. Stockholm Univ. (Sweden); ALBA Synchrotron Light Source, Cerdanyola del Valles (Spain)
  4. Technical Univ. of Darmstadt (Germany); Stockholm Univ. (Sweden)
  5. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  6. Montanuniversität Leoben, Leoben (Austria)
  7. Stockholm Univ. (Sweden); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Institute (PULSE)
  8. Stockholm Univ. (Sweden); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Institute (PULSE); Linköping Univ., Norrköping (Sweden)
  9. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany)
  10. Fritz Haber Institute of the Max Planck Society, Berlin (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
The surface chemistry of the Fischer-Tropsch catalytic reaction over Co has still several unknows. Here, we report an in-situ X-ray photoelectron spectroscopy study of Co$(0001)$ and Co$$(10\bar{1}4)$$, and in-situ high energy surface X-ray diffraction of Co$(0001)$ during the Fischer-Tropsch reaction at 0.15 bar - 1 bar and 406 K - 548 K in a H2/CO gas mixture. We find that these Co surfaces remain metallic under all conditions and that the coverage of chemisorbed species ranges from 0.4–1.7 monolayers depending on pressure and temperature. The adsorbates include CO on-top, C/-CxHy and various longer hydrocarbon molecules, indicating a rate-limiting direct CO dissociation pathway and that only hydrocarbon species participate in the chain growth. The accumulation of hydrocarbon species points to the termination step being rate-limiting also. Furthermore, we demonstrate that the intermediate surface species are highly dynamic, appearing and disappearing with time delays after rapid changes in the reactants’ composition.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
2575642
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 16; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (52)

In-Situ XAFS Investigation of K-Promoted Co Catalysts journal January 1995
The Fischer-Tropsch reaction on a cobalt (0001) single crystal journal May 1990
The influence of crystallite size on the adsorption of molecular nitrogen on nickel, palladium and platinum journal July 1966
XPS and XAS investigation of condensed and adsorbed n-octane on a Cu(110) surface journal February 2003
The Fischer–Tropsch process: 1950–2000 journal January 2002
Study on a cobalt silica catalyst during reduction and Fischer–Tropsch reaction: In situ EXAFS compared to XPS and XRD journal March 1998
Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni journal January 2011
Combined XRD and XANES studies of a Re-promoted Co/γ-Al2O3 catalyst at Fischer–Tropsch synthesis conditions journal October 2010
Fundamental understanding of deactivation and regeneration of cobalt Fischer–Tropsch synthesis catalysts journal September 2010
In situ and operando structural characterisation of a Fischer–Tropsch supported cobalt catalyst journal August 2011
Nature and reactivity of the surface species observed over a supported cobalt catalyst under CO/H2 mixtures journal March 2015
Reflections on the Fischer-Tropsch synthesis: Mechanistic issues from a surface science perspective journal October 2016
Effect of phase and size on surface sites in cobalt nanoparticles journal August 2018
The active phase in cobalt-based Fischer-Tropsch synthesis journal July 2021
Cobalt particle size effects in Fischer–Tropsch synthesis: structural and in situ spectroscopic characterisation on reverse micelle-synthesised Co/ITQ-2 model catalysts journal August 2009
Correlating the preparation and performance of cobalt catalysts supported on carbon nanotubes and carbon spheres in the Fischer–Tropsch synthesis journal February 2011
Spectroscopic insights into cobalt-catalyzed Fischer-Tropsch synthesis: A review of the carbon monoxide interaction with single crystalline surfaces of cobalt journal October 2016
Microkinetic modelling of the formation of C1 and C2 products in the Fischer–Tropsch synthesis over cobalt catalysts journal May 2006
Elementary steps in Fischer–Tropsch synthesis: CO bond scission, CO oxidation and surface carbiding on Co(0001) journal June 2016
Near Ambient-Pressure X-ray Photoelectron Spectroscopy Study of CO Activation and Hydrogenation on Co(0001) journal October 2021
State of the Surface During CO Hydrogenation over Ni(111) and Ni(211) Probed by Operando X-ray Photoelectron Spectroscopy journal February 2023
Water and Hydroxyl Reactivity on Flat and Stepped Cobalt Surfaces journal February 2023
Elementary Surface Reactions on Co(0001) under Fischer–Tropsch Synthesis Conditions journal September 2017
Real-Time Elucidation of Catalytic Pathways in CO Hydrogenation on Ru journal August 2017
In Situ/Operando STM of the Fischer–Tropsch Synthesis on a Co(101̅15) Surface─A Study to Bridge the Materials Gap between Single-Crystal Models and Supported Catalysts journal June 2022
In Situ Surface-Sensitive Investigation of Multiple Carbon Phases on Fe(110) in the Fischer–Tropsch Synthesis journal June 2022
Ambient-Pressure X-ray Photoelectron Spectroscopy Study of Cobalt Foil Model Catalyst under CO, H 2 , and Their Mixtures journal January 2017
Revisiting CO Activation on Co Catalysts: Impact of Step and Kink Sites from DFT journal February 2017
CO Activation on Realistic Cobalt Surfaces: Kinetic Role of Hydrogen journal July 2017
Cobalt Particle Size Effects in the Fischer−Tropsch Reaction Studied with Carbon Nanofiber Supported Catalysts journal March 2006
Evidence of Highly Active Cobalt Oxide Catalyst for the Fischer–Tropsch Synthesis and CO 2 Hydrogenation journal January 2014
On the Origin of the Cobalt Particle Size Effects in Fischer−Tropsch Catalysis journal April 2009
A Photoemission Study of Ethylene Decomposition on a Co(0001) Surface: Formation of Different Types of Carbon Species journal February 2012
Transformation of Carbon Monomers and Dimers to Graphene Islands on Co(0001): Thermodynamics and Kinetics journal January 2013
Fischer−Tropsch Mechanism Revisited:  Alternative Pathways for the Production of Higher Hydrocarbons from Synthesis Gas journal February 2008
Understanding the Effect of Cobalt Particle Size on Fischer−Tropsch Synthesis: Surface Species and Mechanistic Studies by SSITKA and Kinetic Isotope Effect journal November 2010
Cobalt carbide nanoprisms for direct production of lower olefins from syngas journal October 2016
In situ observation of self-assembled hydrocarbon Fischer–Tropsch products on a cobalt catalyst journal September 2016
Mechanistic insight into carbon-carbon bond formation on cobalt under simulated Fischer-Tropsch synthesis conditions journal February 2020
The active sites of a working Fischer–Tropsch catalyst revealed by operando scanning tunnelling microscopy journal October 2019
Bridging the pressure and material gap in heterogeneous catalysis: cobalt Fischer–Tropsch catalysts from surface science to industrial application journal January 2007
Understanding FTS selectivity: the crucial role of surface hydrogen journal January 2017
Hydrogen induced CO activation on open Ru and Co surfaces journal January 2010
X-ray nanoscopy of cobalt Fischer–Tropsch catalysts at work journal January 2013
Ultrahigh vacuum/high-pressure flow reactor for surface x-ray diffraction and grazing incidence small angle x-ray scattering studies close to conditions for industrial catalysis journal January 2010
A high-pressure x-ray photoelectron spectroscopy instrument for studies of industrially relevant catalytic reactions at pressures of several bars journal October 2019
Many-electron singularity in X-ray photoemission and X-ray line spectra from metals journal February 1970
High-Resolution X-Ray Photoemission Spectrum of the Valence Bands of Gold journal June 1972
High-energy x-ray diffraction from surfaces and nanoparticles journal November 2017
Extended pseudo-Voigt function for approximating the Voigt profile journal December 2000
Chemical imaging of Fischer-Tropsch catalysts under operating conditions journal March 2017
High-Energy Surface X-ray Diffraction for Fast Surface Structure Determination journal January 2014

Similar Records

An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry
Technical Report · Mon Jun 13 00:00:00 EDT 2005 · OSTI ID:882890

An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry
Technical Report · Sun May 07 00:00:00 EDT 2006 · OSTI ID:882888

In situ observation of phase changes of a silica-supported cobalt catalyst for the Fischer–Tropsch process by the development of a synchrotron-compatible in situ/operando powder X-ray diffraction cell
Journal Article · Thu Oct 25 20:00:00 EDT 2018 · Journal of Synchrotron Radiation (Online) · OSTI ID:1484840

Related Subjects