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Fundamental and Computational Sciences Directorate

Staff information

Eric Walter

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

PNNL Publications


  • Bowers G.M., H.T. Schaef, Q. Miller, E.D. Walter, S.D. Burton, D.W. Hoyt, and J.A. Horner, et al. 2019. "C-13 Nuclear Magnetic Resonance Spectroscopy of Methane and Carbon Dioxide in a Natural Shale." ACS Earth and Space Chemistry 3, no. 3:324-328. PNNL-SA-140683. doi:10.1021/acsearthspacechem.8b00214
  • Bowers G.M., J.S. Loring, H.T. Schaef, S.S. Cunniff, E.D. Walter, S.D. Burton, and R.K. Larsen, et al. 2019. "Chemical Trapping of CO2 by Clay Minerals at Reservoir Conditions: Two Mechanisms Observed by In Situ High Pressure and Temperature Experiments." ACS Earth and Space Chemistry 3, no. 6:1034-1046. PNNL-SA-140918. doi:10.1021/acsearthspacechem.9b00038
  • Chacon S.S., P.N. Reardon, C.J. Burgess, S.O. Purvine, R.K. Chu, T.R. Clauss, and E.D. Walter, et al. 2019. "Mineral Surfaces as Agents of Environmental Proteolysis: Mechanisms and Controls." Environmental Science & Technology 53, no. 6:3018-3026. PNNL-SA-141783. doi:10.1021/acs.est.8b05583
  • Chamas A., L. Qi, H.S. Mehta, J.A. Sears, S.L. Scott, E.D. Walter, and D.W. Hoyt. 2019. "High Temperature/Pressure MAS-NMR for the Study of Dynamic Processes in Mixed Phase Systems." Magnetic Resonance Imaging 56. PNNL-SA-138048. doi:10.1016/j.mri.2018.09.026
  • Miller Q., D.A. Dixon, S.D. Burton, E.D. Walter, D.W. Hoyt, A.S. Mcneill, and J. Moon, et al. 2019. "Surface-Catalyzed Oxygen Exchange during Mineral Carbonation in Nanoscale Water Films." Journal of Physical Chemistry C 123, no. 20:12871-12885. PNNL-SA-141756. doi:10.1021/acs.jpcc.9b02215
  • Prokopchuk D.E., G.M. Chambers, E.D. Walter, M.T. Mock, and R.M. Bullock. 2019. "H2 Binding, Splitting, and Net Hydrogen Atom Transfer at a Paramagnetic Iron Complex." Journal of the American Chemical Society 141, no. 5:1871-1876. PNNL-SA-139955. doi:10.1021/jacs.8b12823
  • Wang A., Y. Chen, E.D. Walter, N.M. Washton, D. Mei, T. Varga, and Y. Wang, et al. 2019. "Unraveling the mysterious failure of Cu/SAPO-34 selective catalytic reduction catalysts." Nature Communications 10, no. 1:Article No. 1137. PNNL-SA-138654. doi:10.1038/s41467-019-09021-3


  • Bowers G.M., J.S. Loring, H.T. Schaef, E.D. Walter, S.D. Burton, D.W. Hoyt, and S.S. Cunniff, et al. 2018. "Interaction of Hydrocarbons with Clays under Reservoir Conditions: In Situ Infrared and Nuclear Magnetic Resonance Spectroscopy and X-ray Diffraction for Expandable Clays with Variably Wet Supercritical Methane." ACS Earth and Space Chemistry 2, no. 7:640-652. PNNL-SA-136218. doi:10.1021/acsearthspacechem.8b00039
  • Kothandaraman J., R.A. Dagle, V. Dagle, S.D. Davidson, E.D. Walter, S.D. Burton, and D.W. Hoyt, et al. 2018. "Condensed-Phase Low Temperature Heterogeneous Hydrogenation of CO2 to Methanol." Catalysis Science & Technology 8, no. 19:5098-5103. PNNL-SA-133245. doi:10.1039/C8CY00997J
  • Reardon P.N., E.D. Walter, C.L. Marean-Reardon, C.W. Lawrence, M.W. Kleber, and N.M. Washton. 2018. "Carbohydrates Protect Protein Against Abiotic Fragmentation By Soil Minerals." Scientific Reports 8. PNNL-SA-132243. doi:10.1038/s41598-017-19119-7
  • Wang A., Y. Wang, E.D. Walter, R.K. Kukkadapu, Y. Guo, G. Lu, and R.S. Weber, et al. 2018. "Catalytic N2O decomposition and reduction by NH3 over Fe/Beta and Fe/SSZ-13 catalysts." Journal of Catalysis 358. PNNL-SA-128426. doi:10.1016/j.jcat.2017.12.011
  • Weaver J.L., C.Z. Soderquist, N.M. Washton, P.L. Gassman, E.D. Walter, M.E. Bowden, and W.W. Lukens, et al. 2018. "Challenges and Solutions for Handling and Characterizing Alkali-Tc-Oxide Salts." MRS Advances 3, no. 21:1191-1200. PNNL-SA-130916. doi:10.1557/adv.2018.165


  • Bowers G.M., H.T. Schaef, J.S. Loring, D.W. Hoyt, S.D. Burton, E.D. Walter, and R.J. Kirkpatrick. 2017. "Role of Cations in CO2 Adsorption, Dynamics, and Hydration in Smectite Clays Under in situ Supercritical CO2 Conditions." Journal of Physical Chemistry C 121, no. 1:577-592. PNNL-SA-122523. doi:10.1021/acs.jpcc.6b11542
  • Chatterjee S., A. Andersen, Y. Du, M.H. Engelhard, G.B. Hall, T.G. Levitskaia, and W.W. Lukens, et al. 2017. Characterization of Non-pertechnetate Species Relevant to the Hanford Tank Waste. PNNL-26265. Richland, WA: Pacific Northwest National Laboratory. Characterization of Non-pertechnetate Species Relevant to the Hanford Tank Waste
  • Duan W., J. Huang, J.A. Kowalski, I.A. Shkrob, V. Murugesan, E.D. Walter, and B. Pan, et al. 2017. "“Wine-Dark Sea” in An Organic Flow Battery: Storing Negative Charge in 2,1,3-Benzothiadiazole Radicals Leads to Improved Cyclability." ACS Energy Letters 2, no. 5:1156-1161. PNNL-SA-120607. doi:10.1021/acsenergylett.7b00261
  • Jaegers N.R., C. Wan, M.Y. Hu, M. Vasiliu, D.A. Dixon, E.D. Walter, and I. Wachs, et al. 2017. "Investigation of silica-supported vanadium oxide catalysts by high-field 51V Magic Angle Spinning NMR." Journal of Physical Chemistry C 121, no. 11:6246-6254. PNNL-SA-124184. doi:10.1021/acs.jpcc.7b01658
  • Kim K., T. Dutta, E.D. Walter, N.G. Isern, J.R. Cort, B.A. Simmons, and S. Singh. 2017. "Chemoselective Methylation of Phenolic Hydroxyl Group Prevents Quinone Methide Formation and Repolymerization during Lignin Depolymerization." ACS Sustainable Chemistry & Engineering 5, no. 5:3913-3919. PNNL-SA-122183. doi:10.1021/acssuschemeng.6b03102
  • Liu B., W. Xu, J. Zheng, P. Yan, E.D. Walter, N.G. Isern, and M.E. Bowden, et al. 2017. "Temperature dependence of the oxygen reduction mechanism in nonaqueous Li-O2 batteries." ACS Energy Letters 2. PNNL-SA-126517. doi:10.1021/acsenergylett.7b00845
  • Prodinger S., M.A. Derewinski, Y. Wang, N.M. Washton, E.D. Walter, J. Szanyi, and F. Gao, et al. 2017. "Sub-micron Cu/SSZ-13: synthesis and application as selective catalytic reduction (SCR) catalysts." Applied Catalysis. B, Environmental 201. PNNL-SA-117975. doi:10.1016/j.apcatb.2016.08.053
  • Prokopchuk D.E., E.S. Wiedner, E.D. Walter, C.V. Popescu, N.A. Piro, W.S. Kassel, and R.M. Bullock, et al. 2017. "Catalytic N2 Reduction to Silylamines and Thermodynamics of N2 Binding at Square Planar Fe." Journal of the American Chemical Society 139, no. 27:9291-9301. PNNL-SA-125864. doi:10.1021/jacs.7b04552
  • Qi L., R. Alamillo, W.A. Elliott, A. Andersen, D.W. Hoyt, E.D. Walter, and K. Han, et al. 2017. "Operando solid-state NMR observations of solvent-mediated adsorption-reaction of carbohydrates in zeolites." ACS Catalysis 7, no. 5:3489-3500. PNNL-SA-119548. doi:10.1021/acscatal.7b01045
  • Song J., Y. Wang, E.D. Walter, N.M. Washton, D. Mei, L. Kovarik, and M.H. Engelhard, et al. 2017. "Towards rational design of Cu/SSZ-13 selective catalytic reduction catalysts: Implications from atomic-level understanding of hydrothermal stability." ACS Catalysis 7, no. 12:8214-8227. PNNL-SA-128659. doi:10.1021/acscatal.7b03020
  • Weaver J.L., C.Z. Soderquist, P.L. Gassman, E.D. Walter, W.W. Lukens, and J.S. McCloy. 2017. "Synthesis and Characterization of 5- and 6- Coordinated Alkali Pertechnetates." MRS Advances 2, no. 10:525-542. PNNL-SA-123560. doi:10.1557/adv.2017.18


  • Gao F., Y. Zheng, R.K. Kukkadapu, Y. Wang, E.D. Walter, B. Schwenzer, and J. Szanyi, et al. 2016. "Iron loading effects in Fe/SSZ-13 NH3-SCR catalysts: nature of the Fe-ions and structure-function relationships." ACS Catalysis 6, no. 5:2939-2954. PNNL-SA-113591. doi:10.1021/acscatal.6b00647
  • Huang Q., E.D. Walter, L. Cosimbescu, D. Choi, and J.P. Lemmon. 2016. "In situ electrochemical-electron spin resonance investigations of multi-electron redox reaction for organic radical cathodes." Journal of Power Sources 306. PNNL-SA-107032. doi:10.1016/j.jpowsour.2015.11.080
  • Levitskaia T.G., S. Chatterjee, N. Pence, J. Romero, T. Varga, M.H. Engelhard, and Y. Du, et al. 2016. "Inorganic Tin Aluminophosphate Nanocomposite for Reductive Separation of Pertechnetate." Environmental Science: Nano 3, no. 2:1003-1013. PNNL-SA-116229. doi:10.1039/C6EN00130K
  • Li Y., Y. Xie, Z. Wang, N. Zang, F. Carniato, Y. Huang, and C. Andolina, et al. 2016. "Structure and Function of Iron-Loaded Synthetic Melanin." ACS Nano 10, no. 11:10186-10194. PNNL-SA-120425. doi:10.1021/acsnano.6b05502
  • Reardon P.N., S.S. Chacon, E.D. Walter, M.E. Bowden, N.M. Washton, and M.W. Kleber. 2016. "Abiotic protein fragmentation by manganese oxide: implications for a mechanism to supply soil biota with oligopeptides." Environmental Science & Technology 50, no. 7:3486-3493. PNNL-SA-108407. doi:10.1021/acs.est.5b04622


  • Chatterjee S., G.B. Hall, T.G. Levitskaia, E.D. Walter, and N.M. Washton. 2015. Oxidative Stability of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank Waste. PNNL-25076; EMSP-RPT-033 Rev 0. Richland, WA: Pacific Northwest National Laboratory. Oxidative Stability of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank Waste
  • Chen J., D. Wu, E.D. Walter, M.H. Engelhard, P. Bhattacharya, H. Pan, and Y. Shao, et al. 2015. "Molecular-Confinement of Polysulfide within Mesoscale Electrodes for the Practical Application of Lithium Sulfur Batteries." Nano Energy 13. PNNL-SA-106980. doi:10.1016/j.nanoen.2015.01.031
  • Gao F., E.D. Walter, N.M. Washton, J. Szanyi, and C.H. 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. PNNL-SA-99073. doi:10.1016/j.apcatb.2014.07.029
  • Hall G.B., S. Chatterjee, T.G. Levitskaia, T.J. Martin, N. Wall, and E.D. Walter. 2015. Synthesis and Characterization of Tc(I) Carbonyl Nitrosyl Species Relevant to the Hanford Tank Waste: FY 2016 Status Report. PNNL-24916; EMSP-RPT-030 Rev 0. Richland, WA: Pacific Northwest National Laboratory. Synthesis and Characterization of Tc(I) Carbonyl Nitrosyl Species Relevant to the Hanford Tank Waste: FY 2016 Status Report
  • Levitskaia T.G., A. Andersen, S. Chatterjee, G.B. Hall, E.D. Walter, and N.M. Washton. 2015. Spectroscopic Properties of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank Waste. PNNL-25000. Richland, WA: Pacific Northwest National Laboratory. Spectroscopic Properties of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank Waste
  • Li W., F. Gao, Y. Li, E.D. Walter, J. Liu, C.H. Peden, and Y. Wang. 2015. "Nanocrystalline Anatase Titania Supported Vanadia Catalysts: Facet-dependent Structure of Vanadia." Journal of Physical Chemistry C 119, no. 27:15094-15102. PNNL-SA-111187. doi:10.1021/acs.jpcc.5b01486
  • Mccluskey M.D., C. Corolewski, J. Lv, M.C. Tarun, S.T. Teklemichael, E.D. Walter, and M.G. Norton, et al. 2015. "Acceptors in ZnO." Journal of Applied Physics 117, no. 11:Article No. 112802. PNNL-SA-104602. doi:10.1063/1.4913827
  • Vijayakumar M., Z. Nie, E.D. Walter, J.Z. Hu, J. Liu, V.L. Sprenkle, and W. Wang. 2015. "Understanding Aqueous Electrolyte Stability through Combined Computational and Magnetic Resonance Spectroscopy: A Case Study on Vanadium Redox Flow Battery Electrolytes." ChemPlusChem 80, no. 2:428-437. PNNL-SA-102555. doi:10.1002/cplu.201402139
  • Wang Q., J. Zheng, E.D. Walter, H. Pan, D. Lu, P. Zuo, and H. Chen, et al. 2015. "Direct Observation of Sulfur Radicals as Reaction Media in lithium Sulfur Batteries." Journal of the Electrochemical Society 162, no. 3:A474-A478. PNNL-SA-104559. doi:10.1149/2.0851503jes
  • Wei X., W. Xu, J. Huang, L. Zhang, E.D. Walter, C.W. Lawrence, and M. Vijayakumar, et al. 2015. "Radical Compatibility with Nonaqueous Electrolytes and Its Impact on an All-Organic Redox Flow Battery." Angewandte Chemie International Edition 127, no. 30:8808-8811. PNNL-SA-107928. doi:10.1002/ange.201501443
  • Xiao J., J.Z. Hu, H. Chen, M. Vijayakumar, J. Zheng, H. Pan, and E.D. Walter, et al. 2015. "Following the Transient Reactions in Lithium-Sulfur Batteries Using In an In Situ Nuclear Magnetic Resonance Technique." Nano Letters 15, no. 5:3309-3316. PNNL-SA-101779. doi:10.1021/acs.nanolett.5b00521
  • Xu S., E.D. Walter, Z. Zhao, M.Y. Hu, X. Han, J.Z. Hu, and X. Bao. 2015. "Dynamic Structural Changes of SiO2 Supported Pt-Ni Bimetallic Catalysts over Redox Treatments Revealed by NMR and EPR." Journal of Physical Chemistry C 119, no. 36:21219-21226. PNNL-SA-112670. doi:10.1021/acs.jpcc.5b06344


  • Cao R., E.D. Walter, W. Xu, E.N. Nasybulin, P. Bhattacharya, M.E. Bowden, and M.H. Engelhard, et al. 2014. "The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries." ChemSusChem 7, no. 9:2436-2440. PNNL-SA-101742. doi:10.1002/cssc.201402315
  • Gao F., E.D. Walter, M. Kollar, Y. Wang, J. Szanyi, and C.H. Peden. 2014. "Understanding ammonia selective catalytic reduction kinetics over Cu-SSZ-13 from motion of the Cu ions." Journal of Catalysis 319. PNNL-SA-101081. doi:10.1016/j.jcat.2014.08.010
  • Heiden Z.M., S. Chen, L. Labios, R.M. Bullock, E.D. Walter, E.L. Tyson, and M.T. Mock. 2014. "Proton and Electron Additions to Iron (II) Dinitrogen Complexes Containing Pendant Amines." Organometallics 33, no. 6:1333-1336. PNNL-SA-97307. doi:10.1021/om401089d
  • Levitskaia T.G., B.M. Rapko, A. Anderson, J.M. Peterson, S. Chatterjee, E.D. Walter, and H.M. Cho, et al. 2014. Speciation and Oxidative Stability of Alkaline Soluble, Non-Pertechnetate Technetium. PNNL-23654; EMSP-RPT-024 Rev0. Richland, WA: Pacific Northwest National Laboratory. Speciation and Oxidative Stability of Alkaline Soluble, Non-Pertechnetate Technetium
  • Vijayakumar M., N. Govind, E.D. Walter, S.D. Burton, A.K. Shukla, A. Devaraj, and J. Xiao, et al. 2014. "Molecular Structure and Stability of Dissolved Lithium Polysulfide Species." Physical Chemistry Chemical Physics. PCCP 16, no. 22:10923-10932. PNNL-SA-99942. doi:10.1039/c4cp00889H
  • Wilkins M.J., D.W. Hoyt, M.J. Marshall, P.A. Alderson, A.E. Plymale, L.M. Markillie, and A.E. Tucker, et al. 2014. "CO2 exposure at pressure impacts metabolism and stress responses in the model sulfate-reducing bacterium Desulfovibrio vulgaris strain Hildenborough." Frontiers in Microbiology 5. PNNL-SA-103791. doi:10.3389/fmicb.2014.00507


  • Clark R.A., D.J. Robertson, E.D. Walter, S.D. Miller, and J.M. Schwantes. 2013. "Intrinsic Dosimetry of Glass Containers: A Potential Interrogation Tool for Nuclear Forensics and Waste Management." Journal of Radioanalytical and Nuclear Chemistry 296, no. 2:663-668. PNNL-SA-90730. doi:10.1007/s10967-012-2051-0
  • Dudzik C.G., E.D. Walter, B.S. Abrams, M.S. Jurica, and G.L. Millhauser. 2013. "Coordination of Copper to the Membrane-Bound Form of a-Synuclein." Biochemistry 52, no. 1:53-60. PNNL-SA-89725. doi:10.1021/bi301475q
  • Gao F., E.D. Walter, E.M. Karp, J. Luo, R.G. Tonkyn, J. Kwak, and J. Szanyi, et al. 2013. "Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as Probed by Reaction Kinetics and EPR Studies." Journal of Catalysis 300, no. 1:20-29. PNNL-SA-91146. doi:10.1016/j.jcat.2012.12.020
  • Gao F., E.D. Walter, N.M. Washton, J. Szanyi, and C.H. Peden. 2013. "Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction. 1. Aqueous Solution Ion Exchange." ACS Catalysis 3, no. 9:2083-2093. PNNL-SA-96586. doi:10.1021/cs4004672
  • Raitsimring A., A.V. Astashkin, J.H. Enemark, I. Kaminker, D. Goldfarb, E.D. Walter, and Y. Song, et al. 2013. "Optimization of pulsed-DEER measurements for Gd-based labels: choice of operational frequencies, pulse durations and positions, and temperature." Applied Magnetic Resonance 44, no. 6:649-670. PNNL-SA-91299. doi:10.1007/s00723-012-0434-6
  • van der Eide E.F., M.L. Helm, E.D. Walter, and R.M. Bullock. 2013. "Structural and Spectroscopic Characterization of 17- and 18-Electron Piano-Stool Complexes of Chromium. Thermochemical Analyses of Weak Cr-H Bonds." Inorganic Chemistry 52, no. 3:1591-1603. PNNL-SA-91915. doi:10.1021/ic302460y


  • Ferreira D.R., C.P. Schulthess, J.E. Amonette, and E.D. Walter. 2012. "An electron paramagnetic resonance spectroscopy investigation of the retention mechanisms of Mn and Cu in the nanopore channels of three zeolite minerals." Clays and Clay Minerals 60, no. 6:588-598. PNNL-SA-87491. doi:10.1346/CCMN.2012.0600604
  • Sundaram S.K., J.S. McCloy, B.J. Riley, M.K. Murphy, H. Qiao, C.F. Windisch, and E.D. Walter, et al. 2012. "Gamma Radiation Effects on Physical, Optical, and Structural Properties of Binary As-S glasses." Journal of the American Ceramic Society 95, no. 3:1048-1055. PNNL-SA-78558. doi:10.1111/j.1551-2916.2011.04938.x
  • van der Eide E.F., P. Yang, E.D. Walter, T.L. Liu, and R.M. Bullock. 2012. "Dinuclear Metalloradicals Featuring Unsupported Metal-Metal Bonds." Angewandte Chemie International Edition 51, no. 33:8361-8364. PNNL-SA-87602. doi:10.1002/anie.201203531
  • van der Eide E.F., T.L. Liu, D.M. Camaioni, E.D. Walter, and R.M. Bullock. 2012. "Facile Thermal W-W Bond Homolysis in the N-Heterocyclic Carbene-Containing Tungsten Dimer [CpW(CO)2(IMe)]2." Organometallics 31, no. 5:1775-1789. PNNL-SA-84309. doi:10.1021/om201162g


  • Roberts J.A., J.A. Franz, E.F. van der Eide, E.D. Walter, J.L. Petersen, D.L. DuBois, and R.M. Bullock. 2011. "Comproportionation of Cationic and Anionic Tungsten Complexes Having an N-Heterocyclic Carbene Ligand to Give the Isolable 17-Electron Tungsten Radical, CpW(CO)2(IMes)·." Journal of the American Chemical Society 133, no. 37:14593-14603. PNNL-SA-78754. doi:10.1021/ja202754e
  • Teklemichael S.T., W. Oo, M. Matthew, E.D. Walter, and D.W. Hoyt. 2011. "Acceptors in ZnO nanocrystals." Applied Physics Letters 98, no. 23:Article No. 232112. PNNL-SA-79839. doi:10.1063/1.3598411

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