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Fundamental and Computational Sciences Directorate

Staff information


Nancy Washton

Interfacial Sciences & Simulation
Pacific Northwest National Laboratory
PO Box 999
MSIN: K8-98
Richland, WA 99352


Dr. Washton is the capability lead for NMR and EPR, and provides scientific and technical expertise and leadership in support of EMSL’s user program, strategy and scientific productivity. Washton works on coupling NMR with computational chemistry and bioinformatics to provide users with an integrated system for identifying unknowns and making predictions of NMR parameters and species based on computational and simulation data.

Washton specializes in solid-state nuclear magnetic resonance (ssNMR) and studies of surface reactivity in complex oxide systems and their interfaces. Applies ssNMR to study the reactivity of clays and aluminosilicate minerals (e.g., feldspars), natural and synthetic glass and fiberglass materials, and many metal oxide systems, including the interactions between metal oxides and organic matter in soils and atmospheric particles.

Education and Credentials

  • Ph.D., Chemistry, Penn State University, University Park, PA, 2007
  • B.S., Chemistry, University of Nevada, Las Vegas, NV, 2001

Affiliations and Professional Service

  • American Chemical Society

PNNL Publications


  • Kovarik L, NM Washton, RK Kukkadapu, A Devaraj, A Wang, Y Wang, J Szanyi, CHF Peden, and F Gao. 2017. "Transformation of active sites in Fe/SSZ-13 SCR catalysts during hydrothermal aging: a spectroscopic, microscopic and kinetics study." ACS Catalysis 7(4):2458-2470.  doi:10.1021/acscatal.6b03679
  • Brozek EM, NM Washton, KT Mueller, and I Zharov. 2017. "Silsesquioxane Nanoparticles With Reactive Internal Functional Groups." Journal of Nanoparticle Research 19(2):Article No. 85.  doi:10.1007/s11051-017-3771-4
  • Chatterjee S, A Andersen, Y Du, MH Engelhard, GB Hall, TG Levitskaia, WW Lukens, V Shutthanandan, ED Walter, and NM Washton. 2017. Characterization of Non-pertechnetate Species Relevant to the Hanford Tank WastePNNL-26265, Pacific Northwest National Laboratory, Richland, WA. 
  • Chen Y, HS Mehta, M Butler, ED Walter, PN Reardon, RS Renslow, KT Mueller, and NM Washton. 2017. "High-Resolution Microstrip NMR Detectors for Subnanoliter Samples." Physical Chemistry Chemical Physics. PCCP 19(41):28163-28174.  doi:10.1039/c7cp03933f
  • Ok S, DW Hoyt, A Andersen, J Sheets, S Welch, DR Cole, KT Mueller, and NM Washton. 2017. "Surface Interactions and Confinement of Methane: A High Pressure Magic Angle Spinning NMR and Computational Chemistry Study." Langmuir 33(6):1359-1367.  doi:10.1021/acs.langmuir.6b03590
  • Prodinger S, MA Derewinski, Y Wang, NM Washton, ED Walter, J Szanyi, F Gao, Y Wang, and CHF Peden. 2017. "Sub-micron Cu/SSZ-13: synthesis and application as selective catalytic reduction (SCR) catalysts." Applied Catalysis. B, Environmental 201:461-469.  doi:10.1016/j.apcatb.2016.08.053
  • Qi L, R Alamillo, WA Elliott, A Andersen, DW Hoyt, ED Walter, KS Han, NM Washton, RM Rioux, JA Dumesic, and SL Scott. 2017. "Operando Solid-State NMR Observation of Solvent-Mediated Adsorption-Reaction of Carbohydrates in Zeolites." ACS Catalysis 7(5):3489-3500.  doi:10.1021/acscatal.7b01045
  • Wang G, W Um, Z Wang, E Reinoso Maset, NM Washton, KL Mueller, N Perdrial, PA O'Day, and JD Chorover. 2017. "Uranium Release from Acidic Weathered Hanford Sediments: Single-Pass Flow-Through and Column Experiments." Environmental Science & Technology 51(19):11011-11019.  doi:10.1021/acs.est.7b03475
  • Weaver JL, CZ Soderquist, NM Washton, AS Lipton, PL Gassman, WW Lukens, AA Kruger, N Wall, and JS Mccloy. 2017. "Chemical Trends in Solid Alkali Pertechnetates." Inorganic Chemistry 56(5):2533-2544.  doi:10.1021/acs.inorgchem.6b02694
  • Xu K, PR Hrma, NM Washton, MJ Schweiger, and AA Kruger. 2017. "Conversion of Nuclear Waste to Molten Glass: Formation of Porous Amorphous Alumina in a High-Al Melter Feed." Journal of Nuclear Materials 483:102-106.  doi:10.1016/j.jnucmat.2016.11.005


  • Andersen A, PN Reardon, SS Chacon, N Qafoku, NM Washton, and M Kleber. 2016. "Protein-mineral Interactions: Molecular Dynamics Simulations Capture Importance of Variations in Mineral Surface Composition and Structure." Langmuir 32(24):6194-6209.  doi:10.1021/acs.langmuir.6b01198
  • Asmussen RM, CI Pearce, AR Lawter, JJ Neeway, BL Miller, BD Lee, NM Washton, JR Stephenson, RE Clayton, ME Bowden, EC Buck, E Cordova, N Qafoku, and BD Williams. 2016. Getter Incorporation into Cast Stone and Solid State CharacterizationsPNNL-25577 Rev. 0;RPT-SLAW-003 Rev A, Pacific Northwest National Laboratory, Richland, WA. 
  • Asmussen RM, CI Pearce, KE Parker, BW Miller, BD Lee, EC Buck, NM Washton, ME Bowden, AR Lawter, EM McElroy, and RJ Serne. 2016. Solid State Characterizations of Long-Term Leached Cast Stone MonolithsPNNL-25578 Rev.0; RPT-SWCS-008 Rev 0, Pacific Northwest National Laboratory, Richland, WA.  doi:10.2172/1328842
  • Hall GB, A Andersen, NM Washton, S Chatterjee, and TG Levitskaia. 2016. "Theoretical modeling of 99Tc NMR chemical shifts." Inorganic Chemistry 55(17):8341-8347.  doi:10.1021/acs.inorgchem.6b00458
  • Reardon PN, SS Chacon, ED Walter, ME Bowden, NM Washton, and MW Kleber. 2016. "Abiotic protein fragmentation by manganese oxide: implications for a mechanism to supply soil biota with oligopeptides." Environmental Science & Technology 50(7):3486-3493.  doi:10.1021/acs.est.5b04622
  • Tian C, X Zhu, CW Abney, Z Tian, DE Jiang, KS Han, SM Mahurin, NM Washton, and S Dai. 2016. "Use of Steric Encumbrance to Develop Conjugated Nanoporous Polymers for Metal-free Catalytic Hydrogenation." Chemical Communications 52(80):11919-11922.  doi:10.1039/c6cc06372a


  • Kovarik L, ME Bowden, D Shi, NM Washton, A Anderson, JZ Hu, J Lee, J Szanyi, JH Kwak, and CHF Peden. 2015. "Unraveling the Origin of Structural Disorder in High Temperature Transition Al2O3: Structure of ?-Al2O3." Chemistry of Materials 27(20):7042-7049.  doi:10.1021/acs.chemmater.5b02523
  • Chatterjee S, GB Hall, TG Levitskaia, ED Walter, and NM Washton. 2015. Oxidative Stability of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank WastePNNL-25076; EMSP-RPT-033 Rev 0, Pacific Northwest National Laboratory, Richland, WA. 
  • Cheng Y, RM Stolley, KS Han, Y Shao, BW Arey, NM Washton, KT Mueller, ML Helm, VL Sprenkle, J Liu, and G Li. 2015. "Highly Active Electrolytes for Rechargeable Mg Batteries Based on [Mg2(µ-Cl)2]2+ Cation Complex in Dimethoxyethane." Physical Chemistry Chemical Physics. PCCP 17(20):13307-13314.  doi:10.1039/C5CP00859J
  • Gao F, M Kollar, RK Kukkadapu, NM Washton, Y Wang, J Szanyi, and CHF Peden. 2015. "Fe/SSZ-13 as an NH3-SCR Catalyst: A Reaction Kinetics and FTIR/Mössbauer Spectroscopic Study." Applied Catalysis. B, Environmental 164:407-419.  doi:10.1016/j.apcatb.2014.09.031
  • Gao F, ED Walter, NM Washton, J Szanyi, and CHF Peden. 2015. "Synthesis and Evaluation of Cu/SAPO-34 Catalysts for NH3-SCR 2: Solid-state Ion Exchange and One-pot Synthesis." Applied Catalysis. B, Environmental 162:501-514.  doi:10.1016/j.apcatb.2014.07.029
  • Gao F, NM Washton, Y Wang, M Kollar, J Szanyi, and CHF Peden. 2015. "Effects of Si/Al Ratio on Cu/SSZ-13 NH3-SCR Catalysts: Implications for the active Cu species and the Roles of Brønsted Acidity ." Journal of Catalysis 331:25-38.  doi:10.1016/j.jcat.2015.08.004
  • Gao F, Y Wang, M Kollar, NM Washton, J Szanyi, and CHF Peden. 2015. "A Comparative Kinetics Study between Cu/SSZ-13 and Fe/SSZ-13 SCR Catalysts." Catalysis Today 258(Part 2):347-358.  doi:10.1016/j.cattod.2015.01.025
  • Gao F, Y Wang, NM Washton, M Kollar, J Szanyi, and CHF Peden. 2015. "Effects of Alkali and Alkaline Earth Cocations on the Activity and Hydrothermal Stability of Cu/SSZ-13 NH3-SCR Catalysts." ACS Catalysis 5(11):6780-6791.  doi:10.1021/acscatal.5b01621
  • Levitskaia TG, A Andersen, S Chatterjee, GB Hall, ED Walter, and NM Washton. 2015. Spectroscopic Properties of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank WastePNNL-25000, Pacific Northwest National Laboratory, Richland, WA. 
  • Loring JS, J Chen, P Benezeth Ep Gisquet, O Qafoku, ES Ilton, NM Washton, CJ Thompson, PF Martin, BP McGrail, KM Rosso, AR Felmy, and HT Schaef. 2015. "Evidence for Carbonate Surface Complexation during Forsterite Carbonation in Wet Supercritical Carbon Dioxide." Langmuir 31(27):7533-7543.  doi:10.1021/acs.langmuir.5b01052
  • Loring JS, J Chen, P Benezeth, O Qafoku, ES Ilton, NM Washton, CJ Thompson, PF Martin, BP McGrail, KM Rosso, AR Felmy, and HT Schaef. 2015. "Evidence for Carbonate Surface Complexation during Forsterite Carbonation in Wet Supercritical Carbon Dioxide." Langmuir 31(27):7533-7543.  doi:10.1021/acs.langmuir.5b01052
  • Mccloy JS, NM Washton, PL Gassman, J Marcial, JL Weaver, and RK Kukkadapu. 2015. "Nepheline crystallization in boron-rich alumino-silicate glasses as investigated by multi-nuclear NMR, Raman, & Mössbauer spectroscopies." Journal of Non-crystalline Solids 409:149-165.  doi:10.1016/j.jnoncrysol.2014.11.013


  • Levitskaia TG, BM Rapko, A Anderson, JM Peterson, S Chatterjee, ED Walter, HM Cho, and NM Washton. 2014. Speciation and Oxidative Stability of Alkaline Soluble, Non-Pertechnetate TechnetiumPNNL-23654; EMSP-RPT-024 Rev0, Pacific Northwest National Laboratory, Richland, WA. 
  • Mueller KT, RL Sanders, and NM Washton. 2014. "Clay Minerals." In eMagRes, ed. R Wasylishen, DM Grant and RK Harris, pp. 13-28.  Wiley Interscience, Hoboken, NJ. 


  • Baer DR, SE Baker, NM Washton, and BE Linggi. 2013. Status Report on the Development of Research CampaignsPNNL-22924, Pacific Northwest National Laboratory, Richland, WA. 
  • Baer DR, MH Engelhard, GE Johnson, J Laskin, J Lai, KT Mueller, P Munusamy, S Thevuthasan, H Wang, NM Washton, AC Elder, BL Baisch, AS Karakoti, SVNT Kuchibhatla, and DW Moon. 2013. "Surface Characterization of Nanomaterials and Nanoparticles: important needs and challenging opportunities." Journal of Vacuum Science and Technology A--Vacuum, Surfaces and Films 31(5):Article No. 050820.  doi:10.1116/1.4818423
  • 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
  • McCloy JS, BJ Riley, AS Lipton, CF Windisch, Jr, NM Washton, MJ Olszta, and CP Rodriguez. 2013. "Structure and Chemistry in Halide Lead-Tellurite Glasses." Journal of Physical Chemistry C 117(7):3456-3466.  doi:10.1021/jp310820t
  • Mueller KT, M Pruski, NM Washton, and AS Lipton. 2013. Science Drivers and Technical Challenges for Advanced Magnetic ResonancePNNL-22294, Pacific Northwest National Laboratory, Richland, WA. 
  • Murphy KA, NM Washton, JV Ryan, CG Pantano, and KT Mueller. 2013. "Solid-State NMR Examination of Alteration Layers on a Nuclear Waste Glasses." Journal of Non-crystalline Solids 369:44-54.  doi:10.1016/j.jnoncrysol.2013.03.021


  • Sanders RL, NM Washton, and KT Mueller. 2012. "Atomic-level studies of the depletion in reactive sites during clay mineral dissolution." Geochimica et Cosmochimica Acta 92:100-116.  doi:10.1016/j.gca.2012.05.038


  • 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. 

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