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Energy and Environment Directorate

Greg Whyatt

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 372-6233

PNNL Patents

PNNL Publications


  • Archipley C.C., J.A. Barclay, K.D. Meinhardt, G.A. Whyatt, E.C. Thomsen, J.D. Holladay, and J. Cui, et al. 2022. "Methane Liquefaction with an Active Magnetic Regenerative Refrigerator." Cryogenics 128. PNNL-SA-171952. doi:10.1016/j.cryogenics.2022.103588


  • Jiang Y., P.M. Mathias, C.J. Freeman, R.F. Zheng, G.A. Whyatt, D.J. Heldebrant, and J. Swisher. 2021. "Techno-Economic Comparison of Various Process Configurations for Post-Combustion Carbon Capture Using a Single-Component Water-Lean Solvent." International Journal of Greenhouse Gas Control 106. PNNL-SA-156565. doi:10.1016/j.ijggc.2021.103279


  • Akhade S.A., N. Singh, O.Y. Gutierrez-Tinoco, J.A. Lopez-Ruiz, H. Wang, J.D. Holladay, and Y. Liu, et al. 2020. "Electrocatalytic Hydrogenation of Biomass-Derived Organics: A review." Chemical Reviews 120, no. 20:11370-11419. PNNL-SA-155470. doi:10.1021/acs.chemrev.0c00158
  • Hayes J.C., C.E. Aalseth, T.R. Alexander, H.O. Back, E.D. Church, M.P. Foxe, and T.W. Hossbach, et al. 2020. "High Throughput Argon-37 Field System." Pure and Applied Geophysics. PNNL-SA-149601. doi:10.1007/s00024-020-02584-z
  • Zheng R.F., D. Barpaga, P.M. Mathias, D. Malhotra, P.K. Koech, Y. Jiang, and M. Bhakta, et al. 2020. "A Single-Component Water-Lean Post-Combustion CO2 Capture Solvent with Exceptionally Low Operational Heat and Total Costs of Capture - Comprehensive Experimental and Theoretical Evaluation." Energy & Environmental Science 13, no. 11:4106-4113. PNNL-SA-153508. doi:10.1039/D0EE02585B


  • Wang C., Z. Xu, C. Lai, G.A. Whyatt, P. Marcy, and X. Sun. 2018. "Hierarchical Calibration and Validation Framework of Bench-scale Computational Fluid Dynamics Simulations for Solvent-based Carbon Capture: Part 2. Chemical Absorption across a Wetted Wall Column." Greenhouse Gases: Science and Technology 8, no. 1:150-160. PNNL-SA-126976. doi:10.1002/ghg.1727


  • Heldebrant D.J., P.K. Koech, R.J. Rousseau, V. Glezakou, D. Cantu Cantu, D. Malhotra, and F. Zheng, et al. 2017. "Are Water-Lean Solvent Systems Viable for Post-Combustion CO2 Capture?." Energy Procedia 114. PNNL-SA-121489. doi:10.1016/j.egypro.2017.03.1218
  • Singh R.K., J. Galvin, G.A. Whyatt, and X. Sun. 2017. "Breakup of a Liquid Rivulet Falling Over an Inclined Plate: Identification of a Critical Weber Number." Physics of Fluids 29, no. 5:Article No. 052101. PNNL-SA-122512. doi:10.1063/1.4981920
  • Wang C., Z. Xu, C. Lai, G.A. Whyatt, P. Marcy, and X. Sun. 2017. "Hierarchical Calibration and Validation for Modeling Bench-scale Solvent-based Carbon Capture: Part 1. Non-reactive Physical Mass Transfer across the Wetted Wall Column." Greenhouse Gases: Science and Technology 7, no. 4:706-720. PNNL-SA-122798. doi:10.1002/ghg.1682
  • Whyatt G.A., A. Zwoster, F. Zheng, R.J. Perry, B.R. Wood, I. Spiry, and C.J. Freeman, et al. 2017. "Measuring CO2 and N2O Mass Transfer into GAP-1 CO2-Capture Solvents at Varied Water Loadings." Industrial Engineering Chemistry Research 56, no. 16:4830-4836. PNNL-SA-123483. doi:10.1021/acs.iecr.7b00193


  • Nune S.K., D. Lao, D.J. Heldebrant, J. Liu, M.J. Olszta, R.K. Kukkadapu, and L.M. Gordon, et al. 2016. "Anomalous Water Expulsion from Carbon-Based Rods at High Humidity." Nature Nanotechnology 11, no. 9:791-797. PNNL-SA-112991. doi:10.1038/nnano.2016.91
  • Wang C., Z. Xu, C. Lai, G.A. Whyatt, P. Marcy, J.R. Gattiker, and X. Sun. 2016. PNNL Report on the Development of Bench-scale CFD Simulations for Gas Absorption across a Wetted Wall Column. PNNL-25179. Richland, WA: Pacific Northwest National Laboratory. PNNL Report on the Development of Bench-scale CFD Simulations for Gas Absorption across a Wetted Wall Column
  • Whyatt G.A., C.J. Freeman, A. Zwoster, and D.J. Heldebrant. 2016. "Measuring Nitrous Oxide Mass Transfer into Non-Aqueous CO2BOL CO2 Capture Solvents." Industrial and Engineering Chemistry Research 55, no. 16:4720-4725. PNNL-SA-115599. doi:10.1021/acs.iecr.6b00390


  • Chick L.A., M.R. Weimar, G.A. Whyatt, and M.R. Powell. 2015. "The Case for Natural Gas Fueled Solid Oxide Fuel Cell Power Systems for Distributed Generation." Fuel Cells 15, no. 1:49-60. PNNL-SA-98735. doi:10.1002/fuce.201400103
  • Mathias P.M., F. Zheng, D.J. Heldebrant, A. Zwoster, G.A. Whyatt, C.J. Freeman, and M.D. Bearden, et al. 2015. "Measuring the Absorption Rate of CO2 in Nonaqueous CO2-Binding Organic Liquid Solvents with a Wetted-Wall Apparatus." ChemSusChem 8, no. 21:3617-3625. PNNL-SA-107295. doi:10.1002/cssc.201500288
  • Ronnebro E., G.A. Whyatt, M.R. Powell, M.P. Westman, F. Zheng, and Z. Fang. 2015. "Metal Hydrides for High-Temperature Power Generation." Energies 8, no. 8:8406-8430. PNNL-SA-110630. doi:10.3390/en8088406





  • Brooks K.P., J.M. Davis, C.M. Fischer, D.L. King, L.R. Pederson, G.C. Rawlings, and V.S. Stenkamp, et al. 2005. "Fuel Reformation: Microchannel Reactor Design." In Microreactor Technology and Process Intensification : ACS Symposium Series, edited by Yong Wang and Jamelyn D. Holladay. 238-257. New York, New York:Oxford University Press. PNNL-SA-42332.
  • King D.L., K.P. Brooks, C.M. Fischer, L.R. Pederson, G.C. Rawlings, V.S. Stenkamp, and W.E. TeGrotenhuis, et al. 2005. "Fuel Reformation: Catalyst Requirements in Microchannel Architectures." In Microreactor Technology and Process Intensification, ACS Symposium Series, edited by Yong Wang and Jamelyn D. Holladay. 119-128. Washington, District Of Columbia:American Chemical Society. PNNL-SA-44437.


  • Mattigod S.V., G.A. Whyatt, R.J. Serne, and M.I. Wood. 2004. "Diffusion of iodine and Technetium-99 through waste encasement concrete and unsaturated soil fill material." In Scientific Basis for Nuclear Waste Management XXVIII. Materials Research Society Symposium Proceedings, edited by John M. Hanchar, Simcha Stores-Gascoyne, Lauren Browning, 824, 391-398. Warrendale, Pennsylvania:Materials Research Society. PNNL-SA-43964.
  • Whyatt G.A., C.M. Fischer, and J.M. Davis. 2004. "Development of a Rapid-Start On-Board Automotive Steam Reformer." In Proceedings of the AIChE 2004 Spring National Meeting, Paper No. 120c. New York, New York:American Institute of Chemical Engineers. PNNL-SA-40939.


  • Whyatt G.A., C.M. Fischer, and J.M. Davis. 2002. "Progress on the Development of a Microchannel Steam Reformer for Automotive Applications." In IMRET6 - 6th International Conference on Microreaction Technology: AIChE Spring National Meeting, March 10-14, 2002, in New Orleans, Louisiana, 85-98. New York, New York:AIChE. PNNL-SA-36029.
  • Whyatt G.A., W.E. TeGrotenhuis, J.G. Geeting, J.M. Davis, R.S. Wegeng, and L.R. Pederson. 2002. "Demonstration of Energy Efficient Steam Reforming in Microchannels for Automotive Fuel Processing." In Microreaction technology : IMRET 5 : proceedings of the Fifth International Conference on Microreaction Technology, 303-312. Berlin:Springer. PNNL-SA-34534.


  • Wegeng R.S., L.R. Pederson, W.E. TeGrotenhuis, and G.A. Whyatt. 2001. "COMPACT FUEL PROCESSORS FOR FUEL CELL POWERED AUTOMOBILES BASED ON MICROCHANNEL TECHNOLOGY." Fuel Cells Bulletin 3, no. 28:8-13. PNNL-SA-33893. doi:10.1016/S1464-2859(01)80001-8


  • Kincaid C.T., M.P. Bergeron, C.R. Cole, M.D. Freshley, V.G. Johnson, D.I. Kaplan, and R.J. Serne, et al. 2000. "Composite Analysis for Low-Level Waste Disposal in the 200 Area Plateau of the Hanford Site, Southeast Washington." In Environmental Toxicology and Risk Assessment: Recent Achievements in Environmental Fate and Transport Vol. 9; STP 1381, edited by Fred T. Price, Kevin V Brix, and Nancy K. Lane, 104 - 117. West Conshohocken, Pennsylvania:Am. Soc. For Testing and Materials. PNNL-SA-31730.


  • Goles R.W., R.A. Merrill, C.J. Freeman, G.B. Josephson, G.A. Whyatt, D.K. Seiler, and D.A. Lamar. 1998. Engineering-Scale DC Arc Furnance Testing Summary. PNNL-11972. Richland, WA: Pacific Northwest National Laboratory. Engineering-Scale DC Arc Furnance Testing Summary

Energy and Environment

Core Research Areas