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Density functional theory studies of HCOOH decomposition on Pd(111)

Journal Article · · Surface Science
 [1];  [2]
  1. Univ. of Wisconsin-Madison, Madison, WI (United States); Department of Chemical and Biological Engineering, University of Wisconsin-Madison
  2. Univ. of Wisconsin-Madison, Madison, WI (United States)
Here, the investigation of formic acid (HCOOH) decomposition on transition metal surfaces is important to derive useful insights for vapor phase catalysis involving HCOOH and for the development of direct HCOOH fuel cells (DFAFC). Here we present the results obtained from periodic, self-consistent, density functional theory (DFT-GGA) calculations for the elementary steps involved in the gas-phase decomposition of HCOOH on Pd(111). Accordingly, we analyzed the minimum energy paths for HCOOH dehydrogenation to CO2 + H2 and dehydration to CO + H2O through the carboxyl (COOH) and formate (HCOO) intermediates. Our results suggest that HCOO formation is easier than COOH formation, but HCOO decomposition is more difficult than COOH decomposition, in particular in presence of co-adsorbed O and OH species. Therefore, both paths may contribute to HCOOH decomposition. CO formation goes mainly through COOH decomposition.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Institute for Atom-efficient Chemical Transformations (IACT); Univ. of Wisconsin-Madison, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Contributing Organization:
EMSL, a National scientific user facility at Pacific Northwest National Laboratory (PNNL); and the National Energy Research Scientific Computing Center (NERSC); the Center for Nanoscale Materials at Argonne National Laboratory (ANL)
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; FG02-05ER15731
OSTI ID:
1406902
Alternate ID(s):
OSTI ID: 1373614
Journal Information:
Surface Science, Journal Name: Surface Science Journal Issue: C Vol. 650; ISSN 0039-6028
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Tuning Adsorption Energies and Reaction Pathways by Alloying: PdZn versus Pd for CO 2 Hydrogenation to Methanol journal August 2020
Electrocatalytic Activities towards the Electrochemical Oxidation of Formic Acid and Oxygen Reduction Reactions over Bimetallic, Trimetallic and Core–Shell-Structured Pd-Based Materials journal March 2019
N-Doped graphene-supported PdCu nanoalloy as efficient catalyst for reducing Cr( vi ) by formic acid journal January 2018
DFT and microkinetic investigation of methanol synthesis via CO 2 hydrogenation on Ni(111)-based surfaces journal January 2019
Van der Waals density functional study of formic acid adsorption and decomposition on Cu(111) journal April 2019
Structure Sensitivity of Formic Acid Electrooxidation on Transition Metal Surfaces: A First-Principles Study journal January 2018

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