The catalytic behavior of precisely synthesized Pt–Pd bimetallic catalysts for use as diesel oxidation catalysts
Abstract
The demands of stricter diesel engine emission regulations have created challenges for current exhaust systems. With advances in low-temperature internal combustion engines and their operations, advances must also be made in vehicle exhaust catalysts. Most current diesel oxidation catalysts use heavy amounts of precious group metals (PGMs) for hydrocarbon (HC), CO, and NO oxidation. These catalysts are expensive and are most often synthesized with poor bimetallic interaction and dispersion. In this paper, the goal was to study the effect of aging on diesel emission abatement of Pt–Pd bimetallic nanoparticles precisely prepared with different morphologies: well dispersed core–shell vs. well dispersed homogeneously alloyed vs. poorly dispersed, poorly alloyed particles. Alumina and silica supports were studied. Particle morphology and dispersion were analyzed before and after hydrothermal treatments by XRD, EDX, and STEM. Reactivity as a function of aging was measured in simulated diesel engine exhaust. While carefully controlled bimetallic catalyst nanoparticle structure has a profound influence on initial or low temperature catalytic activity, the differences in behavior disappear with higher temperature aging as thermodynamic equilibrium is achieved. The metallic character of Pt-rich alumina-supported catalysts is such that behavior rather closely follows the Pt–Pd metal phase diagram. Nanoparticles disparately composed as well-dispersed core–shellmore »
- Authors:
-
- Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). FEERC
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Science Foundation (NSF); Univ. of South Carolina; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
- OSTI Identifier:
- 1261303
- Alternate Identifier(s):
- OSTI ID: 1358898
- Grant/Contract Number:
- AC05-00OR22725; CBET-1160036
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Catalysis Today
- Additional Journal Information:
- Journal Volume: 267; Journal ID: ISSN 0920-5861
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; strong electrostatic adsorption; bimetallic; Pt-Pd; Pt; Pd; diesel oxidation catalyst; NO
Citation Formats
Wong, Andrew P., Kyriakidou, Eleni A., Toops, Todd J., and Regalbuto, John R. The catalytic behavior of precisely synthesized Pt–Pd bimetallic catalysts for use as diesel oxidation catalysts. United States: N. p., 2016.
Web. doi:10.1016/j.cattod.2016.02.011.
Wong, Andrew P., Kyriakidou, Eleni A., Toops, Todd J., & Regalbuto, John R. The catalytic behavior of precisely synthesized Pt–Pd bimetallic catalysts for use as diesel oxidation catalysts. United States. https://doi.org/10.1016/j.cattod.2016.02.011
Wong, Andrew P., Kyriakidou, Eleni A., Toops, Todd J., and Regalbuto, John R. Sun .
"The catalytic behavior of precisely synthesized Pt–Pd bimetallic catalysts for use as diesel oxidation catalysts". United States. https://doi.org/10.1016/j.cattod.2016.02.011. https://www.osti.gov/servlets/purl/1261303.
@article{osti_1261303,
title = {The catalytic behavior of precisely synthesized Pt–Pd bimetallic catalysts for use as diesel oxidation catalysts},
author = {Wong, Andrew P. and Kyriakidou, Eleni A. and Toops, Todd J. and Regalbuto, John R.},
abstractNote = {The demands of stricter diesel engine emission regulations have created challenges for current exhaust systems. With advances in low-temperature internal combustion engines and their operations, advances must also be made in vehicle exhaust catalysts. Most current diesel oxidation catalysts use heavy amounts of precious group metals (PGMs) for hydrocarbon (HC), CO, and NO oxidation. These catalysts are expensive and are most often synthesized with poor bimetallic interaction and dispersion. In this paper, the goal was to study the effect of aging on diesel emission abatement of Pt–Pd bimetallic nanoparticles precisely prepared with different morphologies: well dispersed core–shell vs. well dispersed homogeneously alloyed vs. poorly dispersed, poorly alloyed particles. Alumina and silica supports were studied. Particle morphology and dispersion were analyzed before and after hydrothermal treatments by XRD, EDX, and STEM. Reactivity as a function of aging was measured in simulated diesel engine exhaust. While carefully controlled bimetallic catalyst nanoparticle structure has a profound influence on initial or low temperature catalytic activity, the differences in behavior disappear with higher temperature aging as thermodynamic equilibrium is achieved. The metallic character of Pt-rich alumina-supported catalysts is such that behavior rather closely follows the Pt–Pd metal phase diagram. Nanoparticles disparately composed as well-dispersed core–shell (via seq-SEA), well-dispersed homogeneously alloyed (via co-SEA), and poorly dispersed, poorly alloyed (via co-DI) end up as well alloyed, large particles of almost the same size and activity. With Pd-rich systems, the oxidation of Pd also figures into the equilibrium, such that Pd-rich oxide phases appear in the high temperature forms along with alloyed metal cores. Finally, the small differences in activity after high temperature aging can be attributed to the synthesis methods, sequential SEA and co-DI which give rise, after aging, to a bimetallic surface enriched in Pd.},
doi = {10.1016/j.cattod.2016.02.011},
journal = {Catalysis Today},
number = ,
volume = 267,
place = {United States},
year = {Sun Apr 17 00:00:00 EDT 2016},
month = {Sun Apr 17 00:00:00 EDT 2016}
}
Web of Science
Works referenced in this record:
Twenty-five years after introduction of automotive catalysts: what next?
journal, September 2000
- Shelef, M.; McCabe, R. W.
- Catalysis Today, Vol. 62, Issue 1
Effect of alloy composition on dispersion stability and catalytic activity for NO oxidation over alumina-supported Pt–Pd catalysts
journal, April 2007
- Graham, G. W.; Jen, H. -W.; Ezekoye, O.
- Catalysis Letters, Vol. 116, Issue 1-2
Improvement of thermal stability of NO oxidation Pt/Al2O3 catalyst by addition of Pd
journal, August 2009
- Kaneeda, M.; Iizuka, H.; Hiratsuka, T.
- Applied Catalysis B: Environmental, Vol. 90, Issue 3-4
Effect of Pt dispersion on the reduction of NO by propene over alumina-supported Pt catalysts under lean-burn conditions
journal, January 1998
- Lee, Jong‐Hwan; Kung, Harold H.
- Catalysis Letters, Vol. 51, Issue 1/2, p. 1-4
Bimetallic Pt/Pd diesel oxidation catalysts
journal, October 2005
- Morlang, A.; Neuhausen, U.; Klementiev, K. V.
- Applied Catalysis B: Environmental, Vol. 60, Issue 3-4
The Effect of Pt-Pd Ratio on Oxidation Catalysts Under Simulated Diesel Exhaust
conference, April 2011
- Kim, Chang Hwan; Schmid, Michelle; Schmieg, Steven J.
- SAE 2011 World Congress & Exhibition, SAE Technical Paper Series
Pt/Pd Bimetallic Catalyst with Improved Activity and Durability for Lean-Burn CNG Engines
journal, April 2013
- Kim, Joonwoo; Kim, Eunseok; Han, JaeUk
- SAE International Journal of Fuels and Lubricants, Vol. 6, Issue 3
Effect of hydrocarbon species on no oxidation over diesel oxidation catalysts
journal, November 2009
- Irani, Karishma; Epling, William S.; Blint, Richard
- Applied Catalysis B: Environmental, Vol. 92, Issue 3-4
Mechanisms of catalyst deactivation
journal, April 2001
- Bartholomew, Calvin H.
- Applied Catalysis A: General, Vol. 212, Issue 1-2
Influence of Platinum Precursors on the Activity of Diesel Oxidation Catalysts. An EXAFS Study
journal, January 2001
- Schmitt, D.; Fuess, H.; Klein, H.
- Topics in Catalysis, Vol. 16/17, Issue 1/4, p. 355-362
Effect of thermal ageing in oxidizing or reducing atmosphere on the texture and structure of palladium, copper and palladium-copper on alumina catalysts
journal, April 1995
- Skoda, F.; Astier, M. P.; Pajonk, G. M.
- Reaction Kinetics & Catalysis Letters, Vol. 55, Issue 1
Thermal stabilization of catalyst supports and their application to high-temperature catalytic combustion
journal, May 1996
- Arai, Hiromichi; Machida, Masato
- Applied Catalysis A: General, Vol. 138, Issue 2
Deactivation of postcombustion catalysts, a review
journal, March 2004
- Neyestanaki, Ahmad Kalantar; Klingstedt, Fredrik; Salmi, Tapio
- Fuel, Vol. 83, Issue 4-5
Diesel Oxidation Catalysts
journal, October 2011
- Russell, April; Epling, William S.
- Catalysis Reviews, Vol. 53, Issue 4
Structural Characterization of Automotive Catalysts
journal, October 2005
- Haaß, F.; Fuess, H.
- Advanced Engineering Materials, Vol. 7, Issue 10
Combinations of platinum and palladium on alumina supports as oxidation catalysts
journal, October 1991
- Skoglundh, M.; Löwendahl, L. O.; Otterated, J. -E.
- Applied Catalysis, Vol. 77, Issue 1
Supported platinum catalysts for nitrogen oxide sensors
journal, January 2005
- Benard, S.; Retailleau, L.; Gaillard, F.
- Applied Catalysis B: Environmental, Vol. 55, Issue 1
The Influence of Pt Oxide Formation and Pt Dispersion on the Reactions NO2⇔NO+1/2 O2 over Pt/Al2O3 and Pt/BaO/Al2O3
journal, September 2002
- Olsson, L.
- Journal of Catalysis, Vol. 210, Issue 2
Palladium-Based Catalysts with Improved Sulphur Tolerance for Diesel-Engine Exhaust Systems
journal, July 2009
- Aluha, James Lulizi; Pattrick, Gary; van der Lingen, Elma
- Topics in Catalysis, Vol. 52, Issue 13-20
vEXAFS characterization of bimetallic Pt–Pd/SiO2–Al2O3 catalysts for hydrogenation of aromatics in diesel fuel
journal, January 1999
- Fujikawa, Takashi; Tsuji, Koji; Mizuguchi, Hirofumi
- Catalysis Letters, Vol. 63, Issue 1/2, p. 27-33
Alloy Formation and Surface Segregation in Zeolite-Supported Pt−Pd Bimetallic Catalysts
journal, March 1997
- Hansen, Poul L.; Molenbroek, Alfons M.; Ruban, Andrei V.
- The Journal of Physical Chemistry B, Vol. 101, Issue 10
Morphology and composition of Pt$z.sbnd;Pd alloy crystallites on SiO2 in reactive atmospheres*1
journal, February 1979
- Chen, M.
- Journal of Catalysis, Vol. 56, Issue 2
Catalysis by alloys and bimetallic clusters
journal, January 1977
- Sinfelt, John H.
- Accounts of Chemical Research, Vol. 10, Issue 1
The rational synthesis of Pt-Pd bimetallic catalysts by electrostatic adsorption
journal, May 2015
- Cho, Hye-Ran; Regalbuto, John R.
- Catalysis Today, Vol. 246
High Sensitivity Silicon Slit Detectors for 1 nm Powder XRD Size Detection Limit
journal, January 2015
- O’Connell, K.; Regalbuto, John R.
- Catalysis Letters, Vol. 145, Issue 3
Adaptive Global Carbon Monoxide Kinetic Mechanism over Platinum/Alumina Catalysts
journal, May 2013
- Depcik, Christopher; Loya, Sudarshan; Srinivasan, Anand
- Catalysts, Vol. 3, Issue 2
New insights into catalytic CO oxidation on Pt-group metals at elevated pressures
journal, February 2009
- McClure, Sean M.; Goodman, D. Wayne
- Chemical Physics Letters, Vol. 469, Issue 1-3
Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation
journal, May 2011
- Haneda, Masaaki; Sasaki, Motoi; Hamada, Hideaki
- Chinese Journal of Catalysis, Vol. 32, Issue 5
Effect of platinum dispersion on the catalytic activity of Pt/Al2O3 for the oxidation of carbon monoxide and propene
journal, October 2013
- Haneda, Masaaki; Watanabe, Tokuya; Kamiuchi, Naoto
- Applied Catalysis B: Environmental, Vol. 142-143
Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on alumina
journal, September 2014
- Peterson, Eric J.; DeLaRiva, Andrew T.; Lin, Sen
- Nature Communications, Vol. 5, Issue 1
Oxidation state of palladium as a factor controlling catalytic activity of Pd/SiO2–Al2O3 in propane combustion
journal, December 1998
- Yazawa, Yoshiteru; Yoshida, Hisao; Takagi, Nobuyuki
- Applied Catalysis B: Environmental, Vol. 19, Issue 3-4
Acid Strength of Support Materials as a Factor Controlling Oxidation State of Palladium Catalyst for Propane Combustion
journal, October 1999
- Yazawa, Yoshiteru; Yoshida, Hisao; Takagi, Nobuyuki
- Journal of Catalysis, Vol. 187, Issue 1
Thermal decomposition and reformation of PdO catalysts; support effects
journal, August 1995
- Farrauto, Robert J.; Lampert, Jordan K.; Hobson, Melvin C.
- Applied Catalysis B: Environmental, Vol. 6, Issue 3
Structure sensitivity of methane oxidation over platinum and palladium
journal, April 1990
- Hicks, R.
- Journal of Catalysis, Vol. 122, Issue 2
Identification of active sites for CO and CH4 oxidation over PdO/Ce1−xPdxO2−δ catalysts
journal, May 2012
- Meng, Lian; Lin, Jian-Jun; Pu, Zhi-Ying
- Applied Catalysis B: Environmental, Vol. 119-120
Catalytic CO oxidation over palladium supported NaZSM-5 catalysts
journal, March 2003
- Bi, Yushui; Lu, Gongxuan
- Applied Catalysis B: Environmental, Vol. 41, Issue 3
In situ diffraction of highly dispersed supported platinum nanoparticles
journal, January 2014
- Gallagher, James R.; Li, Tao; Zhao, Haiyan
- Catal. Sci. Technol., Vol. 4, Issue 9
Oxygen Chemisorption, Formation, and Thermal Stability of Pt Oxides on Pt Nanoparticles Supported on SiO 2 /Si(001): Size Effects
journal, August 2011
- Ono, Luis K.; Croy, Jason R.; Heinrich, Helge
- The Journal of Physical Chemistry C, Vol. 115, Issue 34
Metals and alloys of the platinum group
journal, February 1959
- Raub, Ernst
- Journal of the Less Common Metals, Vol. 1, Issue 1
Works referencing / citing this record:
Dry reforming of methane over palladium–platinum on carbon nanotube catalyst
journal, March 2018
- Zhu, Yuan; Chen, Kun; Yi, Chen
- Chemical Engineering Communications, Vol. 205, Issue 7
Gaseous CO and toluene co-oxidation over monolithic core–shell Co 3 O 4 -based hetero-structured catalysts
journal, January 2019
- Mo, Shengpeng; Zhang, Qi; Sun, Yuhai
- Journal of Materials Chemistry A, Vol. 7, Issue 27