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Title: Low-temperature CO oxidation over a ternary oxide catalyst with high resistance to hydrocarbon inhibition

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [1];  [2];  [2];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Platinum group metal (PGM) catalysts are the current standard for control of pollutants in automotive exhaust streams. Aside from their high cost, PGM catalysts struggle with CO oxidation at low temperatures (<200 °C) due to inhibition by hydrocarbons in exhaust streams. Here we present a ternary mixed oxide catalyst composed of copper oxide, cobalt oxide, and ceria (dubbed CCC) that outperforms synthesized and commercial PGM catalysts for CO oxidation in simulated exhaust streams while showing no signs of inhibition by propene. Diffuse reflectance IR (DRIFTS) and light-off data both indicate low interaction between propene and the CO oxidation active site on this catalyst, and a separation of adsorption sites is proposed as the cause of this inhibition resistance. In conclusion, this catalyst shows great potential as a low-cost component for low temperature exhaust streams that are expected to be a characteristic of future automotive systems.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1247937
Journal Information:
Angewandte Chemie (International Edition), Vol. 54, Issue 45; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 75 works
Citation information provided by
Web of Science

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Cited By (16)

Mesoporous Co‐Al oxide nanosheets as highly efficient catalysts for CO oxidation journal February 2020
Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis journal February 2018
Highly Efficient Removal of CO in Effluent Streams from Real‐Life Propane Oxidation Process over CuO−CeO 2 −Based Catalysts journal August 2018
Demonstrating the Potential of Chemiluminescence as a Tool to Characterize Heterogeneous Catalysis Using CO Oxidation on Copper‐Based Catalysts as an Example journal April 2019
Preparation and Characterization of UiO-66-Supported Cu–Ce Bimetal Catalysts for Low-Temperature CO Oxidation journal January 2019
Sensitivity of Three-Way Catalyst Light-Off Temperature to Air-Fuel Ratio journal June 2018
Porous hollow manganites with robust composite shells for oxidation of CO at low temperature journal January 2016
CO oxidation on SnO 2 surfaces enhanced by metal doping journal January 2018
Pt NPs immobilized on a N-doped graphene@Al 2 O 3 hybrid support as robust catalysts for low temperature CO oxidation journal January 2018
Litchi-peel-like hierarchical hollow copper-ceria microspheres: aerosol-assisted synthesis and high activity and stability for catalytic CO oxidation journal January 2018
Theoretical investigation of the ORR on boron–silicon nanotubes (B–SiNTs) as acceptable catalysts in fuel cells journal January 2019
Gaseous CO and toluene co-oxidation over monolithic core–shell Co 3 O 4 -based hetero-structured catalysts journal January 2019
Activation of surface lattice oxygen in single-atom Pt/CeO 2 for low-temperature CO oxidation journal December 2017
Nanostructured cerium oxide: preparation, characterization, and application in energy and environmental catalysis journal November 2016
Deactivation of a Pd/Pt Bimetallic Oxidation Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation journal December 2019
Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array journal February 2020