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Title: Impact of pH on Aqueous-Phase Phenol Hydrogenation Catalyzed by Carbon-Supported Pt and Rh

Journal Article · · ACS Catalysis
 [1];  [2]; ORCiD logo [2];  [3]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [4]; ORCiD logo [5]
  1. Department of Chemistry, University of Washington, Seattle, Washington 98105-1700, United States; Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
  2. Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
  3. Department of Chemistry and Catalysis Research Center, Technische Universität München, D-85748 Garching, Germany
  4. Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States; Department of Chemistry and Catalysis Research Center, Technische Universität München, D-85748 Garching, Germany
  5. Department of Chemistry, University of Washington, Seattle, Washington 98105-1700, United States

In aqueous phase, the rates of hydrogenation of aromatic substrates such as phenol on Pt/C and Rh/C are influenced by varying activity of hydronium ions. Decreasing the pH from 8 to 1 increases the rate of hydrogenation of phenol on Pt at 20 bar H2 by 15-fold. This increase is attributed to weakening of the hydrogen binding energy (HBE) on the metal surface with decreasing pH. A weaker HBE at lower pH is also predicted by ab initio molecular dynamics simulations, providing atomistic insight into the impact of electrolyte ion distribution and interfacial solvent reorganization on HBE. The lower HBE results in a decrease in the activation energy for addition of adsorbed H from the metal to the adsorbed organic (with a Brønsted-Evans-Polanyi slope of ~1). The kinetic model derived accounts also for the lack of pH dependence at low hydrogen coverages (at 1 bar H2 on Pt or up to 70 bar H2 on Rh), when the weakening of the HBE decreases the hydrogen coverage. The research described in this paper is part of the Chemical Transformation Initiative at Pacific Northwest National Laboratory (PNNL), conducted under the Laboratory Directed Research and Development Program at PNNL, a multiprogram national laboratory operated by Battelle for the U.S. Department of Energy. N.S. acknowledges the Washington Research Foundation Innovation Fellowship. C.T.C. acknowledges the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences Division Grant No. DE-FG02-96ER14630 for support of this work.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1507529
Report Number(s):
PNNL-SA-138664
Journal Information:
ACS Catalysis, Vol. 9, Issue 2; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

References (61)

Carbon-supported Pt during aqueous phenol hydrogenation with and without applied electrical potential: X-ray absorption and theoretical studies of structure and adsorbates journal December 2018
Integrated catalytic and electrocatalytic conversion of substituted phenols and diaryl ethers journal December 2016
Hydrogenation of benzaldehyde via electrocatalysis and thermal catalysis on carbon-supported metals journal March 2018
Electrocatalytic Hydrogenation of Phenol over Platinum and Rhodium: Unexpected Temperature Effects Resolved journal October 2016
Hydrogen Oxidation and Evolution Reaction Kinetics on Platinum: Acid vs Alkaline Electrolytes journal January 2010
Universal dependence of hydrogen oxidation and evolution reaction activity of platinum-group metals on pH and hydrogen binding energy journal March 2016
New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism journal January 2014
Size-Dependent Hydrogen Oxidation and Evolution Activities on Supported Palladium Nanoparticles in Acid and Base journal January 2016
Palladium Nanoparticle–Graphitic Carbon Nitride Porous Synergistic Catalyst for Hydrogen Evolution/Oxidation Reactions over a Broad Range of pH and Correlation of Its Catalytic Activity with Measured Hydrogen Binding Energy journal February 2016
Temperature-Dependent Hydrogen Electrochemistry on Platinum Low-Index Single-Crystal Surfaces in Acid Solutions journal July 1997
Hydrogen electrochemistry on platinum low-index single-crystal surfaces in alkaline solution journal January 1996
Design principles for hydrogen evolution reaction catalyst materials journal November 2016
The role of non-covalent interactions in electrocatalytic fuel-cell reactions on platinum journal August 2009
Co-adsorption of Cations as the Cause of the Apparent pH Dependence of Hydrogen Adsorption on a Stepped Platinum Single-Crystal Electrode journal October 2017
Correlating the hydrogen evolution reaction activity in alkaline electrolytes with the hydrogen binding energy on monometallic surfaces journal January 2013
Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions journal January 2018
Correlating hydrogen oxidation and evolution activity on platinum at different pH with measured hydrogen binding energy journal January 2015
Water dissociation on well-defined platinum surfaces: The electrochemical perspective journal March 2013
The rate of electrolytic hydrogen evolution and the heat of adsorption of hydrogen journal January 1958
Explanation of Dramatic pH-Dependence of Hydrogen Binding on Noble Metal Electrode: Greatly Weakened Water Adsorption at High pH journal May 2018
The Hydrogen Evolution Reaction in Alkaline Solution: From Theory, Single Crystal Models, to Practical Electrocatalysts journal May 2018
pH effect on acetate adsorption at Pt(111) electrode journal April 2018
Effect of Step Density and Orientation on the Apparent pH Dependence of Hydrogen and Hydroxide Adsorption on Stepped Platinum Surfaces journal July 2018
Importance of Solvation for the Accurate Prediction of Oxygen Reduction Activities of Pt-Based Electrocatalysts journal May 2017
Recent developments in electrochemical hydrogen evolution reaction journal January 2018
pH and Alkali Cation Effects on the Pt Cyclic Voltammogram Explained Using Density Functional Theory journal December 2015
Influence of Alkali Metal Cations on the Hydrogen Evolution Reaction Activity of Pt, Ir, Au, and Ag Electrodes in Alkaline Electrolytes journal June 2018
Influence of the Nature of the Alkali Metal Cations on the Electrical Double-Layer Capacitance of Model Pt(111) and Au(111) Electrodes journal March 2018
Trends in the Exchange Current for Hydrogen Evolution journal January 2005
Gas-Phase Chemistry to Understand Electrochemical Hydrogen Evolution and Oxidation on Doped Transition Metal Sulfides journal January 2013
Probing ensemble effects in surface reactions. 1. Site-size requirements for the dehydrogenation of cyclic hydrocarbons on platinum(111) revealed by bismuth site blocking journal January 1989
Surface science studies of model fuel cell electrocatalysts journal April 2002
Co-adsorption of O and H2O on Nanostructured Platinum Surfaces: Does OH Form at Steps? journal July 2010
In situ infrared spectroscopy at single-crystal metal electrodes: an emerging link between electrochemical and ultrahigh-vacuum surface science journal July 1991
Finite Bias Calculations to Model Interface Dipoles in Electrochemical Cells at the Atomic Scale journal June 2016
Modelling pH and potential in dynamic structures of the water/Pt(111) interface on the atomic scale journal January 2017
OH formation and H 2 adsorption at the liquid water–Pt(111) interface journal January 2018
System-Size Dependence of Diffusion Coefficients and Viscosities from Molecular Dynamics Simulations with Periodic Boundary Conditions journal October 2004
First-Principles Study of Phenol Hydrogenation on Pt and Ni Catalysts in Aqueous Phase journal July 2014
Energies of Formation Reactions Measured for Adsorbates on Late Transition Metal Surfaces journal October 2016
Computational study of the adsorption and dissociation of phenol on Pt and Rh surfaces journal January 2012
Chemisorption of Benzene on Pt(111), Pd(111), and Rh(111) Metal Surfaces:  A Structural and Vibrational Comparison from First Principles journal May 2004
Benzene adsorbed on metals: Concerted effect of covalency and van der Waals bonding journal December 2012
Insight into the description of van der Waals forces for benzene adsorption on transition metal (111) surfaces journal February 2014
Aqueous phase electrocatalysis and thermal catalysis for the hydrogenation of phenol at mild conditions journal March 2016
Benzene hydrogenation over supported and unsupported palladium II. Reaction model journal September 1987
Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte journal November 2017
First Principles Simulations of Cyclic Voltammograms on Stepped Pt(553) and Pt(533) Electrode Surfaces journal August 2016
Experimental Proof of the Bifunctional Mechanism for the Hydrogen Oxidation in Alkaline Media journal November 2017
On the pH dependence of electrochemical proton transfer barriers journal March 2016
The structure of interfacial water on gold electrodes studied by x-ray absorption spectroscopy journal October 2014
Potential Dependent Organization of Water at the Electrified Metal−Liquid Interface journal November 2005
Interaction of hydrogen with solid surfaces journal July 1988
Structure Sensitivity in Hydrogenation Reactions on Pt/C in Aqueous‐phase journal October 2018
Generalized Gradient Approximation Made Simple journal October 1996
Quickstep: Fast and accurate density functional calculations using a mixed Gaussian and plane waves approach journal April 2005
A hybrid Gaussian and plane wave density functional scheme journal October 1997
Gaussian basis sets for accurate calculations on molecular systems in gas and condensed phases journal September 2007
Separable dual-space Gaussian pseudopotentials journal July 1996
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
Enthalpic and Entropic Effects on Hydrogen and OH Adsorption on Pt(111), Pt(100), and Pt(110) Electrodes As Evaluated by Gibbs Thermodynamics journal December 2010

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