skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pathways for Ethanol Dehydrogenation and Dehydration Catalyzed by Ceria (111) and (100) Surfaces

Journal Article · · Journal of Physical Chemistry. C
DOI:https://doi.org/10.1021/jp509686f· OSTI ID:1185705
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We have performed computations to better understand how surface structure affects selectivity in dehydrogenation and dehydration reactions of alcohols. Ethanol reactions on the (111) and (100) ceria surfaces were studied starting from the dominant surface species, ethoxy. We used DFT (PBE+U) to explore reaction pathways leading to ethylene and acetaldehyde and calculated estimates of rate constants employing transition state theory. To assess pathway contributions, we carried out kinetic analysis. Our results show that intermediate and transition state structures are stabilized on the (100) surface compared to the (111) surface. Formation of acetaldehyde over ethylene is kinetically and thermodynamically preferred on both surfaces. Our results are consistent with temperature programmed surface reaction and steady-state experiments, where acetaldehyde was found as the main product and evidence was presented that ethylene formation at higher temperature originates from changes in adsorbate and surface structure.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185705
Journal Information:
Journal of Physical Chemistry. C, Vol. 119, Issue 5; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

References (39)

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review journal April 2014
Investigation of reactive cerium-based oxides for H2 production by thermochemical two-step water-splitting journal April 2010
Nanostructured ceria-based materials: synthesis, properties, and applications journal January 2012
Oxygen Defects and Surface Chemistry of Ceria: Quantum Chemical Studies Compared to Experiment journal December 2012
Surface structure dependence of selective oxidation of ethanol on faceted CeO2 nanocrystals journal October 2013
Theoretical Calculation of the Dehydrogenation of Ethanol on a Rh/CeO 2 (111) Surface journal August 2006
Oxygen Vacancy-Assisted Coupling and Enolization of Acetaldehyde on CeO 2 (111) journal October 2012
Methanol Adsorption on the Clean CeO 2 (111) Surface:  A Density Functional Theory Study journal July 2007
Adsorption and dissociation of methanol on the fully oxidized and partially reduced (111) cerium oxide surface: Dependence on the configuration of the cerium 4f electrons journal January 2008
Density Functional Theory Study of Methanol Decomposition on the CeO 2 (110) Surface journal February 2008
A density functional theory study of formaldehyde adsorption on ceria journal November 2007
A density functional theory study of formaldehyde adsorption and oxidation on CeO2(111) surface journal January 2010
Projector augmented-wave method journal December 1994
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Ab initiomolecular dynamics for liquid metals journal January 1993
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Generalized Gradient Approximation Made Simple journal October 1996
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Hydrogen Cycle on CeO 2 (111) Surfaces:  Density Functional Theory Calculations journal October 2007
CO Adsorption and Oxidation on Ceria Surfaces from DFT+U Calculations journal May 2008
First-principles LDA + U and GGA + U study of cerium oxides: Dependence on the effective U parameter journal January 2007
Insight into the Adsorption of Water on the Clean CeO 2 (111) Surface with van der Waals and Hybrid Density Functionals journal June 2012
Ordered cerium oxide thin films grown on Ru(0001) and Ni(111) journal June 1999
Thiolate Ligands as a Double-Edged Sword for CO Oxidation on CeO 2 Supported Au 25 (SCH 2 CH 2 Ph) 18 Nanoclusters journal April 2014
Water Adsorption and Its Effect on the Stability of Low Index Stoichiometric and Reduced Surfaces of Ceria journal March 2012
Surface structure determination of CeO 2 ( 001 ) by angle-resolved mass spectroscopy of recoiled ions journal June 1999
The surface structure of CeO2(001) single crystals studied by elevated temperature STM journal April 2001
Surface properties of CeO 2 from first principles journal February 2004
The electronic structure of oxygen vacancy defects at the low index surfaces of ceria journal December 2005
Adsorption and Reaction of C 1 −C 3 Alcohols over CeO X (111) Thin Films journal July 2010
Nudged elastic band method for finding minimum energy paths of transitions
  • JÓNsson, Hannes; Mills, Greg; Jacobsen, Karsten W.
  • Proceedings of the International School of Physics, Classical and Quantum Dynamics in Condensed Phase Simulations https://doi.org/10.1142/9789812839664_0016
conference November 2011
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Concepts of Modern Catalysis and Kinetics book October 2003
Improved grid-based algorithm for Bader charge allocation journal January 2007
A fast and robust algorithm for Bader decomposition of charge density journal June 2006
The Surface Dependence of CO Adsorption on Ceria journal August 2006
Unraveling the Complexity of Catalytic Reactions via Kinetic Monte Carlo Simulation: Current Status and Frontiers journal November 2012

Cited By (5)

Dehydrogenation of methanol to formaldehyde catalyzed by pristine and defective ceria surfaces journal January 2016
Catalytic Enhancement of Aldol Condensation by Oxygen Vacancy on CeO 2 Catalysts journal April 2019
Microkinetic simulation and fitting of the temperature programmed reaction of methanol on CeO2(111): H2 and H2O + V production journal January 2020
A computational-experimental investigation on high ethylene selectivity in ethanol dehydration reaction found on WOx/ZrO2-activated carbon bi-support systems journal December 2019
Shape Engineering of Oxide Nanoparticles for Heterogeneous Catalysis journal April 2016

Similar Records

Reactions of acetaldehyde and ethanol on W(100) and W(100)-(5 x 1)C surfaces
Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Catal.; (United States) · OSTI ID:1185705

Ethanol Conversion over La0.7Sr0.3MnO3–x(100): Autocatalysis, Adjacent O-Vacancies, Disproportionation, and Dehydrogenation
Journal Article · Wed Oct 21 00:00:00 EDT 2020 · ACS Catalysis · OSTI ID:1185705

Steam Reforming of Ethanol over Pt/ceria with Co-Fed Hydrogen
Journal Article · Mon Jan 01 00:00:00 EST 2007 · Journal of Catalysis · OSTI ID:1185705