Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis
Abstract
Abstract Recently, we reported on a ternary mixed‐oxide catalyst that showed low‐temperature CO oxidation activity under lean exhaust conditions without inhibition by hydrocarbons such as propene. However, the hydrocarbon oxidation activity of this Cu–Co–Ce (CCC) catalyst cannot be considered as a stand‐alone solution to low‐temperature automotive exhaust catalysis. To achieve both low‐temperature oxidation of pollutants and a reduction in the total platinum‐group‐metal (PGM) content, we examined a 50 % physical mixture of traditional Pt/Al 2 O 3 and our CCC catalyst in two simulated exhaust protocols. Using this physical mixture, we were able to obtain equivalent or better hydrocarbon activity than the baseline Pt/Al 2 O 3 catalyst with half the total PGM content as well as increased sulfur tolerance for the CCC component of the mixture. Diffuse reflectance infrared Fourier transform spectroscopy data confirmed that despite exposure of sulfur‐sensitive CCC to SO 2 , Cu + ‐carbonyl binding sites could still be seen if the catalyst was mixed with Pt/Al 2 O 3 .
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1476435
- Alternate Identifier(s):
- OSTI ID: 1420003
- Grant/Contract Number:
- AC05-00OR22725; AC0500OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ChemCatChem
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 6; Journal ID: ISSN 1867-3880
- Publisher:
- ChemPubSoc Europe
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Binder, Andrew J., Toops, Todd J., and Parks, James E. Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis. United States: N. p., 2018.
Web. doi:10.1002/cctc.201701706.
Binder, Andrew J., Toops, Todd J., & Parks, James E. Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis. United States. https://doi.org/10.1002/cctc.201701706
Binder, Andrew J., Toops, Todd J., and Parks, James E. Mon .
"Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis". United States. https://doi.org/10.1002/cctc.201701706. https://www.osti.gov/servlets/purl/1476435.
@article{osti_1476435,
title = {Copper-Cobalt-Cerium Ternary Oxide as an Additive to a Conventional Platinum-Group-Metal Catalyst for Automotive Exhaust Catalysis},
author = {Binder, Andrew J. and Toops, Todd J. and Parks, James E.},
abstractNote = {Abstract Recently, we reported on a ternary mixed‐oxide catalyst that showed low‐temperature CO oxidation activity under lean exhaust conditions without inhibition by hydrocarbons such as propene. However, the hydrocarbon oxidation activity of this Cu–Co–Ce (CCC) catalyst cannot be considered as a stand‐alone solution to low‐temperature automotive exhaust catalysis. To achieve both low‐temperature oxidation of pollutants and a reduction in the total platinum‐group‐metal (PGM) content, we examined a 50 % physical mixture of traditional Pt/Al 2 O 3 and our CCC catalyst in two simulated exhaust protocols. Using this physical mixture, we were able to obtain equivalent or better hydrocarbon activity than the baseline Pt/Al 2 O 3 catalyst with half the total PGM content as well as increased sulfur tolerance for the CCC component of the mixture. Diffuse reflectance infrared Fourier transform spectroscopy data confirmed that despite exposure of sulfur‐sensitive CCC to SO 2 , Cu + ‐carbonyl binding sites could still be seen if the catalyst was mixed with Pt/Al 2 O 3 .},
doi = {10.1002/cctc.201701706},
journal = {ChemCatChem},
number = 6,
volume = 10,
place = {United States},
year = {Mon Jan 08 00:00:00 EST 2018},
month = {Mon Jan 08 00:00:00 EST 2018}
}
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Cited by: 7 works
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Figures / Tables:
Figure 1: Light-off curves for (A) CO and (B) Propene conversion under In-House conditions over PtAl (blue), CCC (black), CCCPAsplit (pink), and CCCPAmix (red).
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Works referenced in this record:
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.