NOx Adsorber Materials: Fundamental Studies, and Investigations of Sulfur Poisoning and Thermal Deactivation
EMSL Project ID
35404
Abstract
Catalysits systems related to automotive exhaust control will be investigated. Specifically, the focus will be on catalysts that are important in lean NOx emission control (NOx storage/reduction (NSR)catalysts; catalysts for selective catalyitc reduction (SCR) of NOx). On the NSR side we are going to continue our fundamental studies aimed at understanding the sulfur poisoning of BaO-based catalysts. The effect of CeO2 addition to the base Pt/BaO/Al2O3 catalyst will also be studies, both in the view of NOx uptake/release/reduction and sulfur poisoning. On the SCR side, we are going to study the deactivation mechanisms of zeolite-based SCR catalysts (e.g. dealumination, sulfur poisoning, active phase agglomeration, etc).
Project Details
Project type
Large-Scale EMSL Research
Start Date
2009-10-05
End Date
2012-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Effects of potassium loading and thermal aging on K/Pt/Al2O3 high-temperature lean NOx trap catalysts
Luo J, F Gao, DH Kim, and CHF Peden. 2014. "Effects of Potassium loading and thermal aging on K/Pt/Al2O3 high-temperature lean NOx trap catalysts." Catalysis Today. doi:10.1016/j.cattod.2013.12.020
Characterization of Cu-SSZ-13 NH3 SCR catalysts: an in situ FTIR study
Szanyi J, JH Kwak, H Zhu, and CHF Peden. 2013. "Characterization of Cu-SSZ-13 NH3 SCR Catalysts: an in situ FTIR Study." Physical Chemistry Chemical Physics. PCCP 15(7):2368-2380. doi:10.1039/c2cp43467a
Cation Movements during Dehydration and NO2 Desorption in a Ba–Y,FAU Zeolite: An in Situ Time-Resolved X-ray Diffraction Study
Wang X, JC Hanson, JH Kwak, J Szanyi, and CHF Peden. 2013. "Cation Movements during Dehydration and NO2 Desorption in a Ba-Y,FAU zeolite: an in situ Time-resolved X-ray Diffraction Study." Journal of Physical Chemistry C 117(8):3915-3922. doi:10.1021/jp308307m
Preface
Yezerets A, CHF Peden, J Szanyi, I Nova, and B Epling. 2012. "Preface: Special Issue on Catalytic Control of Lean-Burn Engine Exhaust Emissions." Catalysis Today 184(1):1. doi:10.1016/j.cattod.2012.02.011
Enhanced High Temperature Performance of MgAl2O4-Supported Pt–BaO Lean NOx Trap Catalysts
Kwak JH, DH Kim, J Szanyi, SJ Cho, and CHF Peden. 2012. "Enhanced high temperature performance of MgAl2O4-supported Pt-BaO lean NOx trap catalysts." Topics in Catalysis 55(1-2):70-77. doi:10.1007/s11244-012-9779-1
Effect of sulfur loading on the desulfation chemistry of a commercial lean NOx trap catalyst
Kim DH, A Yezerets, J Li, N Currier, H Chen, H. Hess, MH Engelhard, GG Muntean, and CHF Peden. 2012. "Effect of sulfur loading on the desulfation chemistry of a commercial lean NOx trap catalyst." Catalysis Today. doi:10.1016/j.cattod.2012.05.040
Deactivation mechanisms of Pt/Pd-based diesel oxidation catalysts
Wiebenga MH, CH Kim, SJ Schmieg, SH Oh, DB Brown, DH Kim, JH Lee, and CHF Peden. 2012. "Deactivation Mechanisms of Pt/Pd-based Diesel Oxidation Catalysts." Catalysis Today 184(1):197-204. doi:10.1016/j.cattod.2011.11.014
Possible origin of improved high temperature performance of hydrothermally aged Cu/beta zeolite catalysts
Peden CHF, JH Kwak, SD Burton, RG Tonkyn, DH Kim, JH Lee, HW Jen, G Cavattaio, Y Cheng, and C Lambert. 2012. "Possible Origin of Improved High Temperature Performance of Hydrothermally Aged Cu/Beta Zeolite Catalysts." Catalysis Today 184(1):245-251. doi:10.1016/j.cattod.2011.11.008
Thermal durability of Cu-CHA NH3-SCR catalysts for diesel NOx reduction
Schmieg SJ, SH Oh, CH Kim, DB Brown, JH Lee, CHF Peden, and DH Kim. 2012. "Thermal Durability of Cu-CHA NH3-SCR Catalysts for Diesel NOx Reduction." Catalysis Today 184(1):252-261. doi:10.1016/j.cattod.2011.10.034
Characteristics of Pt–K/MgAl2O4 lean NOx trap catalysts
Kim DH, KK Mudiyanselage, J Szanyi, H Zhu, JH Kwak, and CHF Peden. 2012. "Characteristics of Pt-K/MgAl2O4 lean NOx trap catalysts." Catalysis Today 184(1):2-7. doi:10.1016/j.cattod.2011.11.024
Two different cationic positions in Cu-SSZ-13?
Kwak JH, H Zhu, JH Lee, CHF Peden, and J Szanyi. 2012. "Two different cationic positions in Cu-SSZ-13? ." Chemical Communications 48(39):4758-4760. doi:10.1039/C2CC31184D
Regeneration of field-spent activated carbon catalysts for low-temperature selective catalytic reduction of NOx with NH3
Jeon JK, H Kim, YK Park, CHF Peden, and DH Kim. 2011. "Regeneration of field-spent activated carbon catalysts for low-temperature selective catalytic reduction of NOx with NH3." Chemical Engineering Journal 174(1):242-248. doi:10.1016/j.cej.2011.09.011
The Effect of Copper Loading on the Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Cu-SSZ-13
Kwak JH, DN Tran, J Szanyi, CHF Peden, and JH Lee. 2012. "The Effect of Copper Loading on the Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Cu-SSZ-13." Catalysis Letters 142(3):295-301. doi:10.1007/s10562-012-0771-y
Effect of reductive treatments on Pt behavior and NOx storage in lean NOx trap catalysts
Wang X, DH Kim, JH Kwak, CM Wang, J Szanyi, and CHF Peden. 2011. "Effect of reductive treatments on Pt behavior and NOx storage in lean NOx trap catalysts." Catalysis Today 175(1):78– 82. doi:10.1016/j.cattod.2011.03.032
Effects of hydrothermal aging on NH3-SCR reaction over Cu/zeolites
Kwak JH, DN Tran, SD Burton, J Szanyi, JH Lee, and CHF Peden. 2012. "Effects of Hydrothermal Aging on NH3-SCR reaction over Cu/zeolites." Journal of Catalysis 287(1):203-209. doi:10.1016/j.jcat.2011.12.025
Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3
Kwak JH, RG Tonkyn, DH Kim, J Szanyi, and CHF Peden. 2010. "Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3." Journal of Catalysis 275(2):187-190. doi:10.1016/j.jcat.2010.07.031
Effects of Sulfation Level on the Desulfation Behavior of Presulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts: A Combined H2 Temperature-Programmed Reaction, in Situ Sulfur K-Edge X-ray Absorption Near-Edge Spectroscopy, X-ray Photoelectron Spectroscopy, and Time-Resolved X-ray Diffraction Study
Kim, D.H.; Szanyi, J.; Kwak, J.H.; Wang, X.; Hanson, J.C.; Engelhard, M.; Peden, C.H.F. 2009. "Effects of Sulfation Level on the Desulfation Behavior of Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts: A Combined H2 TPRX, In-Situ Sulfur K-Edge XANES, XPS and TR-XRD Study." J. Phys. Chem. C 113(17):7336-7341. DOI: 10.1021/jp900304h
Promotional Effect of CO2 on Desulfation Processes for Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts
Kim, D.H.; Kwak, J.H.; Szanyi, J.; Wang, X.; Peden, C.H.F. 2009. "Promotional effects of CO2 on Desulfation Processes for Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts." Topics in Catal. 52(13-20):1719-1722. DOI 10.1007/s11244-009-9328-8
Coordinatively Unsaturated Al 3+ Centers as Binding Sites for Active Catalyst Phases of Platinum on γ-Al 2 O 3
Kwak, J.H.; Hu, J.; Mei, D.; Yi, C.-W.; Kim, D.H.; Peden, C.H.F.; Allard, L.; Szanyi, J. 2009. "Coordinatively Unsaturated Al+3 Centers as Binding Sites for Active Catalyst Phases: Strong Interactions Between Pt and gamma-Al2O3 Surfaces." Science 325(5948):1670-1673. DOI: 10.1126/science.1176745
Catalyst size and morphological effects on the interaction of NO2 with BaO/γ-Al2O3 materials
Mei D, JH Kwak, J Szanyi, Q Ge, and CHF Peden. 2010. "Catalyst Size and Morphological Effects on the Interaction of NO2 with BaO/?-Al2O3 Materials ." Catalysis Today 151(3-4):304-313. doi:10.1016/j.cattod.2010.01.005
The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts
Cheng Y, C Lambert, DH Kim, JH Kwak, SJ Cho, and CHF Peden. 2010. "The Different Impacts of SO2 and SO3 on Cu/Zeolite SCR Catalysts." Catalysis Today 151(3-4):266-270. doi:10.1016/j.cattod.2010.01.013