Skip to Main Content U.S. Department of Energy
Fundamental and Computational Sciences Directorate

Staff information

Janos Szanyi

Janos Szanyi

Catalysis Science
Scientist
Pacific Northwest National Laboratory
PO Box 999
MSIN: K8-87
Richland, WA 99352
509/371-6524

Biography

Dr. János Szanyi is a Staff Scientist in the Catalysis Science Group within the Chemical and Material Sciences Division at the Pacific Northwest National Laboratory (PNNL). He joined PNNL in 2001 after working five years for PPG Industries, Inc., in Pittsburgh, PA as a Senior Research Chemist. Szanyi`s main research interests are in surface chemistry and catalysis; in particular the understanding of elementary reactions steps on model and real catalytic systems using a variety of spectroscopic techniques (primarily FTIR). After graduating from the University of Szeged, Hungary in chemistry, he conducted his graduate research at the Central Research Institute for Chemistry of the Hungarian Academy of Sciences and received a Doctor of University degree in chemistry from the University of Szeged. His graduate work involved the investigation of toluene alkylation on zeolites, and studying the acid-base properties of zeolites. Next he joined Prof. Jack H. Lunsford`s group at Texas A&M University as a post-doc and conducted research on the partial oxidation of methane. In order to learn more about the techniques and methods used in surface science, he joined Prof. D. Wayne Goodman`s group at Texas A&M University and received a Ph.D. degree in physical chemistry. In his graduate work he studied the catalytic and structural properties of model bimetallic catalysts. After graduation he spent three years at the Los Alamos National Laboratory and worked as a post-doc under the supervision of Dr. Mark T. Paffett, studying the structural and catalytic properties of model alloy systems, and the mechanism of NOx reduction on zeolite-based catalysts. In his current position he is studying the chemistry of base metal oxide nanostructures supported on oxide film films or metal substrates. His research is focused on the understanding of the fundamentals of the interactions between environmentally harmful compounds (NOx, COx, and SOx) and metal and metal oxide nanostructures.

Research Interests

  • Experimental surface chemistry and catalysis on metal and metal oxide surfaces
  • Spectroscopic characterization of surface species relevant to the understanding of the kinetics and mechanisms of environmentally important catalytic reactions
  • Preparation and characterization of oxide nanostructures
  • Operando kinetic/spectroscopic studies of heterogeneous catalytic processes

Education and Credentials

  • 2006-present Staff Scientist, Catalysis Science, Pacific Northwest National Laboratory, Richland, WA
  • 2001-2006 Senior Research Scientist II, Interfacial Chemistry and Engineering, Pacific Northwest National Laboratory, Richland, WA
  • 1996-2001 Research Scientist, Glass Technology Center, PPG Industries, Inc., Pittsburgh, PA
  • 1993-1996 Postdoctoral Research Associate, Chemical Sciences Division, Los Alamos National Laboratory, Los Alamos, NM (Advisor: Dr. MT Paffett)
  • 1988-1993 Ph.D., Physical Chemistry, Texas A&M University, College Station, TX (Advisor: Prof. DW Goodman)
  • 1987-1988 Postdoctoral Research Associate, Texas A&M University, College Station, TX (Advisor: Prof. JH Lunsford)
  • 1982-1986 Doctor of University, Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
  • 1977-1982 B.S. Chemistry, University of Szeged, Szeged, Hungary

Affiliations and Professional Service

  • Member of the American Chemical Society
  • Member of the North American Catalysis Society
  • Scientific Advisory Board Member to Catalysis Letters

Awards and Recognitions

  • Guest editor for the Festschrift issue of The Journal of Physical Chemistry C in honor of Professor D. Wayne Goodman, Texas A&M University (2010)
  • Fulbright Fellowship, 2009
  • Recipient of the 1st PNGV Award, March 31 1996, White House, Washington DC

PNNL Publications

2014

  • Kim DH, KK Mudiyanselage, J Szanyi, JC Hanson, and CHF Peden. 2014. "Effect of H2O on the morphological changes of KNO3 formed on K2O/Al2O3 NOx storage materials: Fourier transform infra-red (FTIR) and time-resolved x-ray diffraction (TR-XRD) studies." Journal of Physical Chemistry C 118(8):4189-4197.  doi:10.1021/jp410816r

2013

  • Gao F, ED Walter, NM Washton, J Szanyi, and CHF Peden. 2013. "Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction. 1. Aqueous Solution Ion Exchange." ACS Catalysis 3(9):2083-2093.  doi:10.1021/cs4004672
  • Gao F, JH Kwak, J Szanyi, and CHF Peden. 2013. "Current Understanding of Cu-Exchanged Chabazite Molecular Sieves for Use as Commercial Diesel Engine DeNOx Catalysts." Topics in Catalysis 56(15-17):1441-1459.  doi:10.1007/s11244-013-0145-8
  • Zhu H, JH Kwak, CHF Peden, and J Szanyi. 2013. "In situ DRIFTS-MS studies on the oxidation of adsorbed NH3 by NOx over a Cu-SSZ-13 zeolite." Catalysis Today 205:16-23.  doi:10.1016/j.cattod.2012.08.043
  • Gao F, ED Walter, EM Karp, JY Luo, RG Tonkyn, JH Kwak, J Szanyi, and CHF Peden. 2013. "Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as Probed by Reaction Kinetics and EPR Studies." Journal of Catalysis 300(1):20-29.  doi:10.1016/j.jcat.2012.12.020
  • Kim DH, KK Mudiyanselage, J Szanyi, JH Kwak, H Zhu, and CHF Peden. 2013. "Effect of K loadings on nitrate formation/decomposition and on NOx storage performance of K-based NOx storage-reduction catalysts." Applied Catalysis. B, Environmental 142-143:472-478.  doi:10.1016/j.apcatb.2013.05.063
  • Kovarik L, A Genc, CM Wang, A Qiu, CHF Peden, J Szanyi, and JH Kwak. 2013. "Tomography and High-Resolution Electron Microscopy Study of Surfaces and Porosity in a Plate-Like ?-Al2O3." Journal of Physical Chemistry C 117(1):179-186.  doi:10.1021/jp306800h
  • Kwak JH, JH Lee, SD Burton, AS Lipton, CHF Peden, and J Szanyi. 2013. "A common intermediate for N2 formation in enzymes and zeolites: side-on Cu-nitrosyl complexes." Angewandte Chemie International Edition 52(38):9985-9989.  doi:10.1002/anie.201303498
  • Kwak JH, L Kovarik, and J Szanyi. 2013. "CO2 Reduction on Supported Ru/Al2O3 Catalysts: Cluster Size Dependence of Product Selectivity." ACS Catalysis 3(11):2449-2455.  doi:10.1021/cs400381f
  • Kwak JH, L Kovarik, and J Szanyi. 2013. "Heterogeneous Catalysis on Atomically Dispersed Supported Metals: CO2 Reduction on Multifunctional Pd Catalysts." ACS Catalysis 3(9):2094-2100.  doi:10.1021/cs4001392
  • Szanyi J, CWW Yi, KK Mudiyanselage, and JH Kwak. 2013. "Understanding Automotive Exhaust Catalysts Using a Surface Science Approach: Model NOx Storage Materials." Topics in Catalysis 56(15-17):1420-1440.  doi:10.1007/s11244-013-0152-9
  • 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
  • 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

2012

  • Kim DH, JH Kwak, J Szanyi, and CHF Peden. 2012. "Isothermal desulfation of pre-sulfated Pt-BaO/?-Al2O3 lean NOx trap catalysts with H2: the effect of H2 concentration and the roles of CO2 and H2O." Applied Catalysis. B, Environmental 111-112(1):342-348.  doi:10.1016/j.apcatb.2011.10.017
  • Mudiyanselage KK, and J Szanyi. 2012. "NO2 uptake under practically relevant conditions on BaO/Pt(111)." Catalysis Today 181(1):116-123.  doi:10.1016/j.cattod.2011.05.033
  • Szanyi J, M Daturi, G Clet, DR Baer, and CHF Peden. 2012. "Well-studied Cu-BTC still serves surprises: evidence for facile Cu2+/Cu+ interchange." Physical Chemistry Chemical Physics. PCCP 14(13):4383-4390.  doi:10.1039/c2cp23708c
  • Devarakonda MN, DR Herling, DH Kim, JH Kwak, CHF Peden, ML Stewart, A Strzelec, J Szanyi, DN Tran, and JH Lee. 2012. "CLEERS Aftertreatment Modeling and Analysis." Chapter II.B.1 in FY 2011 Progress Report for Advanced Combustion Engine Research and Development: Energy Efficiency and Renewable Energy Vehicle Technologies Program, vol. DOE-ACE-2011AR, ed. G Singh, pp. 176-181.  US Department of Energy, Washington DC. 
  • 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
  • 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
  • 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
  • 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
  • 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
  • Kwak JH, RG Tonkyn, DN Tran, D Mei, SJ Cho, L Kovarik, JH Lee, CHF Peden, and J Szanyi. 2012. "Size-dependent catalytic performance of CuO on ?-Al2O3: NO reduction versus NH3 oxidation." ACS Catalysis 2(7):1432-1440.  doi:10.1021/cs3002463
  • Muntean GG, MN Devarakonda, F Gao, JH Kwak, JY Luo, CHF Peden, ML Stewart, J Szanyi, DN Tran, and K Howden. 2012. "CLEERS Aftertreatment Modeling and Analysis." Chapter III.1 in Advanced Combustion Engine Research and Development 2012 Annual Progress Report, vol. DIE/EE-0872, ed. G Singh, pp. III-3 - III-7.  U.S. Department of Energy, Washington DC. 
  • 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

2011

  • Mudiyanselage K, CW Yi, and J Szanyi. 2011. "Reactions of NO2 with BaO/Pt(111) Model Catalysts: The Effects of BaO Film Thickness and NO2 Pressure on the Formation of Ba(NOx)2 Species." Physical Chemistry Chemical Physics. PCCP 13(23):11016-11026. 
  • Mudiyanselage K, JF Weaver, and J Szanyi. 2011. "Catalytic decomposition of Ba(NO3)2 on Pt(111) ." Journal of Physical Chemistry C 115(13):5903-5909. 
  • Campbell CT, AK Datye, GA Henkelman, RF Lobo, WF Schneider, LD Spicer, WT Tysoe, JM Vohs, DR Baer, DW Hoyt, S Thevuthasan, KT Mueller, CM Wang, NM Washton, I Lyubinetsky, RG Teller, A Andersen, N Govind, K Kowalski, BC Kabius, H Wang, AA Campbell, WA Shelton, EJ Bylaska, CHF Peden, Y Wang, DL King, MA Henderson, RJ Rousseau, J Szanyi, Z Dohnalek, D Mei, BC Garrett, D Ray, JH Futrell, J Laskin, DL DuBois, LR Kuprat, and C Plata. 2011. EMSL and Institute for Integrated Catalysis (IIC) Catalysis WorkshopPNNL-20426, Pacific Northwest National Laboratory, Richland, WA. 
  • Du Y, DJ Kim, T Varga, Z Wang, J Szanyi, and I Lyubinetsky. 2011. "Formation of single-phase BaO nanoclusters." Thin Solid Films 519(16):5335-5338.  doi:10.1016/j.tsf.2011.02.032
  • Kwak JH, D Mei, CHF Peden, RJ Rousseau, and J Szanyi. 2011. "(100) facets of ?-Al2O3: the active surfaces for alcohol dehydration reactions." Catalysis Letters 141(5):649-655.  doi:10.1007/s10562-010-0496-8
  • Kwak JH, CHF Peden, and J Szanyi. 2011. "Using a surface-sensitive chemical probe and a bulk structure technique to monitor the ?- to ?-Al2O3 phase transformation." Journal of Physical Chemistry C 115(25):12575-12579.  doi:10.1021/jp203541a
  • Kwak JH, RJ Rousseau, D Mei, CHF Peden, and J Szanyi. 2011. "The Origin of Regioselectivity in 2-butanol Dehydration on Solid Acid Catalysts." ChemCatChem 3(10):1557-1561. 
  • 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

2010

  • 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
  • Mei D, JH Kwak, JZ Hu, SJ Cho, J Szanyi, L Allard, and CHF Peden. 2010. "The Unique Role of Anchoring Penta-coordinated Al3+ Sites in the Sintering of ? Al2O3-supported Pt Catalysts ." The Journal of Physical Chemistry Letters 1:2688-2691.  doi:10.1021/jz101073p
  • Mudiyanselage K, CW Yi, and J Szanyi. 2010. "Reactions of NO2 with Ba(OH)2 on Pt(111)." Journal of Physical Chemistry C 114(40):16955-16963. 
  • Boily JF, PL Gassman, T Peretyazhko, J Szanyi, and JM Zachara. 2010. "FTIR Spectral Components of Schwertmannite." Environmental Science & Technology 44(4):1185-1190. 
  • Henderson MA, CHF Peden, JA Rodriguez, J Szanyi, JT Yates, JR, and F Zaera. 2010. "Preface to the Festschrift in Honor of Professor D. Wayne Goodman." Journal of Physical Chemistry C 114(40):16861-16862.  doi:10.1021/jp105968e
  • 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
  • Mudiyanselage K, D Mei, CW Yi, JF Weaver, and J Szanyi. 2010. "Formation, characterization and reactivity of adsorbed oxygen on BaO/Pt(111)." Journal of Physical Chemistry C 114(47):20195-20206. 

2009

  • Kim DH, J Szanyi, JH Kwak, X Wang, JC Hanson, MH Engelhard, and CHF Peden. 2009. "Effects of sulfation level on the desulfation behavior of pre-sulfated 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." Journal of Physical Chemistry C 113(17):7336-7341.  doi:10.1021/jp900304h
  • Kim DH, JH Kwak, J Szanyi, X Wang, G Li, JC Hanson, and CHF Peden. 2009. "Characteristics of Desulfation Behavior for Pre-Sulfated Pt-BaO/CeO2 Lean NOx Trap Catalysts: The Role of the CeO2 Support." Journal of Physical Chemistry C 113(50):21123-21129 .  doi:10.1021/jp9062548
  • Kim DH, JH Kwak, J Szanyi, X Wang, MH Engelhard, and CHF Peden. 2009. "Promotional effect of CO2 on desulfation processes for pre-sulfated Pt BaO/Al2O3 lean NOx trap catalysts." Topics in Catalysis 52(13-20):1719-1722.  doi:10.1007/s11244-009-9328-8
  • Mei D, Q Ge, J Szanyi, and CHF Peden. 2009. "First-principles Analysis of NOx Adsorption on Anhydrous ?-Al2O3 Surfaces." Journal of Physical Chemistry C 113(18):7779-7789.  doi:10.1021/jp8103563
  • Mei D, Q Ge, JH Kwak, DH Kim, CM Verrier, J Szanyi, and CHF Peden. 2009. "Characterization of Surface and Bulk Nitrates of ?-Al2O3-Supported Alkaline Earth Oxides using Density Functional Theory." Physical Chemistry Chemical Physics. PCCP 11(18):3380-3389.  doi:10.1039/b819347a
  • Mudiyanselage K, CW Yi, and J Szanyi. 2009. "Oxygen Coverage Dependence of NO Oxidation on Pt(111)." Journal of Physical Chemistry C 113(14):5766-5776. 
  • Mudiyanselage K, CWW Yi, and J Szanyi. 2009. "Reactivity of a Thick BaO Film Supported on Pt(111): Adsorption and Reaction of NO2, H2O and CO2." Langmuir 25(18):10820-10828.  doi:10.1021/la901371g
  • Devarakonda MN, DH Kim, JH Kwak, JH Lee, CHF Peden, ML Stewart, J Szanyi, RG Tonkyn, DN Tran, A Zelenyuk, and DR Herling. 2009. "CLEERS Aftertreatment Modeling and Analysis." Chapter II.B.1 in FY 2009 Progress Report for Advanced Combustion Engine Research and Development, pp. 155-163.  Energy Efficiency and Renewable Energy, Washington, D.C.. 
  • Kwak JH, D Mei, CWW Yi, DH Kim, CHF Peden, L Allard, and J Szanyi. 2009. "Understanding the nature of surface nitrates in BaO/gamma-Al2O3 NOx storage materials: A combined experimental and theoretical study ." Journal of Catalysis 261(1):17-22. 
  • Kwak JH, JZ Hu, D Mei, CWW Yi, DH Kim, CHF Peden, L Allard, and J Szanyi. 2009. "Coordinatively unsaturated Al3+ centers as binding sites for active catalyst phases on ?-Al2O3." Science 325(5948):1670-1673.  doi:10.1126/science.1176745
  • Nachimuthu P, YJ Kim, SVNT Kuchibhatla, Z Yu, W Jiang, MH Engelhard, V Shutthanandan, J Szanyi, and S Thevuthasan. 2009. "Growth and characterization of barium oxide nanoclusters on YSZ(111)." Journal of Physical Chemistry C 113(32):14324-14328.  doi:10.1021/jp9020068
  • Yi CW, and J Szanyi. 2009. "Interaction of D2O with a Thick BaO Film: Formation of and Phase Transitions in Barium Hydroxides." Journal of Physical Chemistry C 113(35):15692-15697. 
  • Yi CWW, and J Szanyi. 2009. "BaO/Al2O3/NiAl(110) Model NOx Storage Materials: the effect of BaO film thickness on the amorphous-to-crystalline Ba(NO3)2 phase transition." Journal of Physical Chemistry C 113(2):716-723. 
  • Yi CWW, and J Szanyi. 2009. "Reaction of NO2 with a pure, thick BaO film: the effect of temperature on the nature of NOx species formed." Journal of Physical Chemistry C 113(6):2134-2140. 

2008

  • Kim DH, JH Kwak, J Szanyi, SJ Cho, and CHF Peden. 2008. "Roles of Pt and BaO in the Sulfation of Pt/BaO/Al2O3 Lean NOx Trap Materials: Sulfur K-edge XANES and Pt LIII XAFS Studies." Journal of Physical Chemistry C 112(8):2981-2987.  doi:10.1021/jp077563i
  • Kim DH, JH Kwak, X Wang, J Szanyi, and CHF Peden. 2008. "Sequential high temperature reduction, low temperature hydrolysis for the regeneration of sulfated NOx trap catalysts." Catalysis Today 136(1-2):183-187.  doi:doi:10.1016/j.cattod.2007.12.134
  • Mei D, Q Ge, JH Kwak, DH Kim, J Szanyi, and CHF Peden. 2008. "Adsorption and Formation of BaO Overlayers on Gamma-Al2O3 Surfaces ." Journal of Physical Chemistry C 112(46):18050-18060.  doi:10.1021/jp806212z
  • Ozensoy E, DR Herling, and J Szanyi. 2008. "NOx Reduction on a Transition Metal-free ?-Al2O3 Catalyst Using Dimethylether (DME)." Catalysis Today 136(1-2):46-54. 
  • Verrier CLM, JH Kwak, DH Kim, CHF Peden, and J Szanyi. 2008. "NOx uptake on alkaline earth oxides (BaO, MgO, CaO and SrO) supported on ?-Al2O3." Catalysis Today 136(1-2):121-127.  doi:doi:10.1016/j.cattod.2007.12.138
  • Epling WS, CHF Peden, and J Szanyi. 2008. "Carbonate Formation and Stability on a Pt/BaO/?-Al2O3 NOx Storage/Reduction Catalyst." Journal of Physical Chemistry C 112(29):10952-10959.  doi:10.1021/jp712180q
  • Kwak JH, DH Kim, J Szanyi, and CHF Peden. 2008. "Excellent Sulfur Resistance of Pt/BaO/CeO2 Lean NOx Trap Catalysts." Applied Catalysis. B, Environmental 84(3-4):545-551.  doi:10.1016/j.apcatb.2008.05.009
  • Kwak JH, JZ Hu, AC Lukaski, DH Kim, J Szanyi, and CHF Peden. 2008. "The Role of PentaCoordinated Al3+ Ions in the High Temperature Phase Transformation of ?-Al2O3." Journal of Physical Chemistry C 112(25):9486-9492.  doi:10.1021/jp802631u
  • Yang Y, CA Mims, RS Disselkamp, D Mei, JH Kwak, J Szanyi, CHF Peden, and CT Campbell. 2008. "Isotope effects in methanol synthesis and the reactivity of copper formates on a Cu/SiO2 catalyst." Catalysis Letters 125(3-4):201-208.  doi:10.1007/s10562-008-9592-4

2007

  • Boily JF, J Szanyi, and AR Felmy. 2007. "Effects of surface coordination on the temperature-programmed desorption of oxalate from goethite." Journal of Physical Chemistry C 111(45):17072-17081.  doi:10.1021/jp075576q
  • Kim DH, JH Kwak, J Szanyi, SD Burton, and CHF Peden. 2007. "Water-induced Bulk Ba(NO3)2 Formation From NO2 Exposed Thermally Aged BaO/Al2O3." Applied Catalysis. B, Environmental 72(3-4):233-239. 
  • Szanyi J, JH Kwak, RJ Chimentao, and CHF Peden. 2007. "The effect of H2O on the adsorption of NO2 on ?-Al2O3: an in situ FTIR/MS study." Journal of Physical Chemistry C 111(6):2661-2669.  doi:10.1021/jp066326x
  • Hibbitts CA, and J Szanyi. 2007. "Physisorption of CO2 on non-ice materials relevant to icy satellites." Icarus 191(1):371-380.  doi:10.1016/j.icarus.2007.04.012
  • Kwak JH, JZ Hu, DH Kim, J Szanyi, and CHF Peden. 2007. "Penta-coordinated Al3+ ions as preferential nucleation sites for BaO on ?-Al2O3: an ultra-high magnetic field 27Al MAS NMR study." Journal of Catalysis 251(2):189-194.  doi:10.1016/j.jcat.2007.06.029
  • Szanyi J, JH Kwak, DH Kim, X Wang, J Hanson, RJ Chimentao, and CHF Peden. 2007. "Water-induced morphology changes in BaO/?-Al2O3 NOx storage materials." Chemical Communications 2007(9):984-986.  doi:10.1039/b613674e
  • Szanyi J, JH Kwak, DH Kim, X Wang, RJ Chimentao, J Hanson, WS Epling, and CHF Peden. 2007. "Water-induced morphology changes in BaO/?-Al2O3 NOx storage materials: an FTIR, TPD, and time-resolved synchrotron XRD study." Journal of Physical Chemistry C 111(12):4678-4687.  doi:10.1021/jp067932v
  • Yi CWW, and J Szanyi. 2007. "D2O Adsorption on an Ultrathin Alumina Film on NiAl(110)." Journal of Physical Chemistry C 111(47):17597-17602.  doi:10.1021/jp074459s
  • Yi CWW, and J Szanyi. 2007. "D2O Adsorption on an Ultrathin Alumina Film on NiAl(110)." Journal of Physical Chemistry C 111(47):17597-17602.  doi:10.1021/jp074459s
  • Yi CWW, JH Kwak, and J Szanyi. 2007. "The interaction of NO2 with BaO: from cooperative adsorption to Ba(NO3)2 formation." Journal of Physical Chemistry C 111(42):15299-15305.  doi:10.1021/jp074179c
  • Yi CWW, JH Kwak, CHF Peden, CM Wang, and J Szanyi. 2007. "Understanding Practical Catalysts Using a Surface Science Approach: The Importance of Strong Interaction between BaO and Al2O3 in NOx Storage Materials." Journal of Physical Chemistry C 111(41):14942-14944.  doi:10.1021/jp0763376

2006

  • Boily JF, J Szanyi, and AR Felmy. 2006. "A Combined FTIR and TPD Study on the Bulk and Surface Dehydroxylation and Decarbonation of Synthetic Goethite." Geochimica et Cosmochimica Acta 70(14):3613-3624. 
  • Ozensoy E, CHF Peden, and J Szanyi. 2006. "Ba Deposition and Oxidation on ?-Al2O3/NiAl(100) Ultrathin Films. Part I: Anaerobic Deposition Conditions." Journal of Physical Chemistry 110:17001-17008.  doi:10.1021/jp060668l
  • Ozensoy E, CHF Peden, and J Szanyi. 2006. "Ba Deposition and Oxidation on ?-Al2O3/NiAl(100) ultrathin films. Part II: O2(g) assisted Ba oxidation." Journal of Physical Chemistry B 110(34):17009-17014.  doi:10.1021/jp060669d
  • Ozensoy E, CHF Peden, and J Szanyi. 2006. "Low Temperature H2O and NO2 Coadsorption on ?-Al2O3/NiAl(100) ultrathin films ." Journal of Physical Chemistry B 110(15):8025-8034.  doi:10.1021/jp057534c
  • Ozensoy E, CHF Peden, and J Szanyi. 2006. "Model NOx storage systems: Storage capacity and thermal aging of BaO/theta- Al2O3/NiAl(100)." Journal of Catalysis 243(1):149-157.  doi:10.1016/j.jcat.2006.06.028
  • Szailer T, JH Kwak, DH Kim, J Hanson, CHF Peden, and J Szanyi. 2006. "Reduction of Stored NOx on Pt/Al2O3 and Pt/BaO/Al2O3 Catalysts with H2 and CO." Journal of Catalysis 239(1):51-64.  doi:10.1016/j.jcat.2006.01.014
  • Szailer T, JH Kwak, DH Kim, J Szanyi, CM Wang, and CHF Peden. 2006. "Effects of Ba loading and calcination temperature on BaAl2O4 formation for BaO/Al2O3 NOx Storage and Reduction Catalysts." Catalysis Today 114(1):86-93.  doi:10.1016/j.cattod.2006.02.016
  • Szanyi J, JH Kwak, SD Burton, JA Rodriguez, and CHF Peden. 2006. "Characterization of NOx Species in Dehydrated and Hydrated Na- and Ba-Y, FAU Zeolites Formed in NO2 Adsorption." Journal of Electron Spectroscopy and Related Phenomena 150(2-3):164-170.  doi:10.1016/j.elspec.2005.05.007
  • Kim DH, J Szanyi, JH Kwak, T Szailer, J Hanson, CM Wang, and CHF Peden. 2006. "Effect of Barium Loading on the Desulfation of Pt-BaO/Al2O3 Studied by H2 TPRX, TEM, Sulfur K-edge XANES, and in Situ TR-XRD." Journal of Physical Chemistry B 110(21):10441-10448.  doi:10.1021/jp060119f
  • Kwak JH, CHF Peden, and J Szanyi. 2006. "Non-thermal plasma-assisted NOx reduction over Na-Y zeolites: The promotional effect of acid sites." Catalysis Letters 109(1-2):1-6.  doi:10.1007/s10562-006-0049-3
  • Kwak JH, DH Kim, T Szailer, CHF Peden, and J Szanyi. 2006. "NOx Uptake Mechanism on Pt/BaO/Al2O3 Catalysts." Catalysis Letters 111(3-4):119-126. 
  • Wang CM, JH Kwak, DH Kim, J Szanyi, R Sharma, S Thevuthasan, and CHF Peden. 2006. "Morphological Evolution of Ba(NO3)2 Supported on ?-Al2O3(0001): An In-Situ TEM Study." Journal of Physical Chemistry B 110(24):11878-11883.  doi:10.1021/jp060235i
  • Yang Y, RS Disselkamp, J Szanyi, CHF Peden, CT Campbell, and JG Goodwin Jr.. 2006. "Design and operating characteristics of a transient kinetic analysis catalysis reactor system employing in situ transmission Fourier transform infrared." Review of Scientific Instruments 77(9):Art. No. 094104. 

2005

  • Kim DH, YH Chin, JH Kwak, J Szanyi, and CHF Peden. 2005. "Changes in Ba phases in BaO/Al2O3 upon thermal aging and H2O treatment." Catalysis Letters 105(3-4):259-268.  doi:10.1007/s10562-005-8700-y
  • Ozensoy E, CHF Peden, and J Szanyi. 2005. "NO2 Adsorption on Ultrathin T-Al2O3 Films: Formation of Nitrite and Nitrate Species." Journal of Physical Chemistry 109(33):15977-15984. 
  • Ozensoy E, J Szanyi, and CHF Peden. 2005. "Interaction of Water with Ordered Theta-Al203 Ultrathin Films grown on NiAl(100)." Journal of Physical Chemistry B 109(8):3431-3436.  doi:10.1021/jp0449206
  • Szanyi J, JH Kwak, and CHF Peden. 2005. "The Catalytic Chemistry of HCN+NO2 over Na- and Ba-Y, FAU: An In Situ FTIR and TPD/TPR Study." Journal of Physical Chemistry B 109(4):1481-1490.  doi:10.1021/jp045671o
  • Szanyi J. 2005. "Nature of Nitrate Species on BaO/Al2O3 NSR Catalysts." In 229th ACS National Meeting Book of Abstracts, vol. 229, no. Pt. 1, p. Fuel 160.  American Chemical Society, District of Columbia. 
  • Kwak JH, DH Kim, J Szanyi, T Szailer, and CHF Peden. 2005. "Reactivity of Pt/BaO/Al2O3 for NOx Storage/Reduction: Effects of Pt and Ba Loading." In 229th ACS National Meeting, San Diego, March 13-17, 2005, Book of Abstracts, vol. 229, no. Pt. 1, p. Fuel 163.  American Chemical Society, Washington DC. 
  • Szanyi J, JH Kwak, DH Kim, SD Burton, and CHF Peden. 2005. "NO2 Adsorption on BaO/Al2O3: The Nature of Nitrate Species." Journal of Physical Chemistry B 109(1):27-29.  doi:10.1021/jp045082i
  • Szanyi J, JH Kwak, J Hanson, CM Wang, T Szailer, and CHF Peden. 2005. "Changing Morphology of BaO/AI2O3 during NO2 Uptake and Release." Journal of Physical Chemistry B 109(15):7339-7344. 

2004

  • Szanyi J, JH Kwak, and CHF Peden. 2004. "The Effect of Water on the Adsorption of NO2 in Na- and Ba-Y,FAU Zeolites: A Combined FTIR and TPD Investigation." Journal of Physical Chemistry B 108(12):3746-3753. 
  • Szanyi J, JH Kwak, RA Moline, and CHF Peden. 2004. "Adsorption, Coadsorption and Reaction of Acetaldehyde and NO2 on Na-Y,FAU: an in situ FTIR Investigation." Journal of Physical Chemistry B 108(44):17050-17058 . 
  • Barlow SE, JH Kwak, CHF Peden, J Szanyi, RG Tonkyn, G Singh, K Stork, JW Hoard, B Cho, DJ Brooks, and S Nunn. 2004. "Plasma Catalysis for NOx Reduction from Light-Duty Diesel Vehicles." Chapter III.G. in Advanced Combustion Engine R&D: 2003 Annual Progress Report, ed. G Singh, pp. 129-136.  Department of Energy, Washington, DC. 
  • Barlow SE, JH Kwak, CHF Peden, J Szanyi, RG Tonkyn, K Howden, JW Hoard, B Cho, SJ Schmieg, DJ Brooks, S Nunn, and P Davis. 2004. "Plasma Catalysis for NOx Reduction from Light-Duty Diesel Vehicles." In Advanced Combustion Engine Research & Development, 2004 Annual Progress Report, pp. 180-183.  US Department of Energy, Energy Efficiency and Renewable Energy, Washington DC. 
  • Kwak JH, J Szanyi, and CHF Peden. 2004. "Non-Thermal Plasma-assisted NOx Reduction over Alkali and Alkaline Earth Ion Exchanged Y, FAU Zeolites." Catalysis Today 89(1-2):135-141. 
  • Peden CHF, J Szanyi, MA Henderson, SA Chambers, E Ozensoy, S Azad, JA Rodriguez, and GW Graham. 2004. "Fundamental Studies of Selectivity and Mechanisms of Oxide-Catalyzed Nitrogen Oxide Chemistry." In Frontiers in Catalysis Science: Proceedings of the 12th DOE/BES Heterogeneous Catalysis & Surface Science Meeting, pp. 393-396.  Department of Energy, Office of Basic Energy Sciences, Chemical Sciences, Washington, DC. 
  • Wang X, J Hanson, J Szanyi, and JA Rodriguez. 2004. "Interaction of H2O and NO2 with BaY Faujasite: Complex Contraction/Expansion Behavior of the Zeolite Unit Cell ." Journal of Physical Chemistry B 16613-16616 . 
  • White JM, J Szanyi, and MA Henderson. 2004. "Thermal Chemistry of Trimethyl Acetic Acid on TiO2(110)." Journal of Physical Chemistry B 108(11):3592-3602. 

2003

  • Szanyi J, JH Kwak, RA Moline, and CHF Peden. 2003. "The Adsorption of NO2 and the NO+O?2 Reaction on Na-Y,FAU: an in situ FTIR Investigation ." Physical Chemistry Chemical Physics. PCCP 5(18):4045-4051. 
  • Azad S, J Szanyi, CHF Peden, and LQ Wang. 2003. "Adsorption and Reaction of NO on Oxidized and Reduced SrTiO??? (100) Surfaces." Journal of Vacuum Science and Technology A--Vacuum, Surfaces and Films 21(4):1307-1311. 
  • Henderson MA, J Szanyi, and CHF Peden. 2003. "Conversion of N2O to N?2 on TiO2 (110)." Catalysis Today 85 (2-4):251-266. 
  • Kwak JH, J Szanyi, and CHF Peden. 2003. "Non-thermal Plasma-Assisted Catalytic NOx Reduction over Ba-Y,FAU: The Effect of Catalyst Preparation." Journal of Catalysis 220(2):291-298. 
  • White JM, J Szanyi, and MA Henderson. 2003. "The Photon-Driven Hydrophilicity of Titania: A Model Study Using TiO2(110) and Adsorbed Trimethyl acetate." Journal of Physical Chemistry B 107(34):9029-9033. 

Fundamental & Computational Sciences

User Facilities

Research Areas

Divisions

Research Highlights

View All Research Highlights & Staff Accomplishments

RSS Feed

Contacts