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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


  • Wang C, Z Xu, C Lai, GA 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(1):150-160.  doi:10.1002/ghg.1727


  • Heldebrant DJ, PK Koech, RJ Rousseau, VA Glezakou, D Cantu Cantu, D Malhotra, F Zheng, GA Whyatt, CJ Freeman, and MD Bearden. 2017. "Are Water-Lean Solvent Systems Viable for Post-Combustion CO2 Capture?" Energy Procedia 114:756-763.  doi:10.1016/j.egypro.2017.03.1218
  • Singh RK, J Galvin, GA 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(5):Article No. 052101.  doi:10.1063/1.4981920
  • Wang C, Z Xu, C Lai, GA 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(4):706-720.  doi:10.1002/ghg.1682
  • Whyatt GA, A Zwoster, F Zheng, RJ Perry, BR Wood, I Spiry, CJ Freeman, and DJ Heldebrant. 2017. "Measuring CO2 and N2O Mass Transfer into GAP-1 CO2-Capture Solvents at Varied Water Loadings." Industrial Engineering Chemistry Research 56(16):4830-4836.  doi:10.1021/acs.iecr.7b00193


  • Nune SK, D Lao, DJ Heldebrant, J Liu, MJ Olszta, RK Kukkadapu, LM Gordon, MI Nandasiri, GA Whyatt, CK Clayton, DW Gotthold, MH Engelhard, and HT Schaef. 2016. "Anomalous Water Expulsion from Carbon-Based Rods at High Humidity." Nature Nanotechnology 11(9):791-797.  doi:10.1038/nnano.2016.91
  • Wang C, Z Xu, C Lai, GA Whyatt, P Marcy, JR Gattiker, and X Sun. 2016. PNNL Report on the Development of Bench-scale CFD Simulations for Gas Absorption across a Wetted Wall ColumnPNNL-25179, Pacific Northwest National Laboratory, Richland, WA. 
  • Whyatt GA, CJ Freeman, A Zwoster, and DJ Heldebrant. 2016. "Measuring Nitrous Oxide Mass Transfer into Non-Aqueous CO2BOL CO2 Capture Solvents." Industrial and Engineering Chemistry Research 55(16):4720-4725.  doi:10.1021/acs.iecr.6b00390


  • Chick LA, MR Weimar, GA Whyatt, and MR Powell. 2015. "The Case for Natural Gas Fueled Solid Oxide Fuel Cell Power Systems for Distributed Generation." Fuel Cells 15(1):49-60.  doi:10.1002/fuce.201400103
  • Mathias PM, F Zheng, DJ Heldebrant, A Zwoster, GA Whyatt, CJ Freeman, MD Bearden, and PK Koech. 2015. "Measuring the Absorption Rate of CO2 in Nonaqueous CO2-Binding Organic Liquid Solvents with a Wetted-Wall Apparatus." ChemSusChem 8(21):3617-3625.  doi:10.1002/cssc.201500288
  • Ronnebro E, GA Whyatt, MR Powell, MP Westman, F Zheng, and ZZ Fang. 2015. "Metal Hydrides for High-Temperature Power Generation." Energies 8(8):8406-8430.  doi:10.3390/en8088406






  • Wellman DM, KE Parker, L Powers, GA Whyatt, LN Clayton, SV Mattigod, and MI Wood. 2008. "Effect of Iron and Carbonation of the Diffusion of Iodine and Rhenium in Waste Encasement Concrete and Soil Fill Material under Hydraulically Unsaturated Conditions." Applied Geochemistry 23:2256-2271.  doi:doi:10.1016/j.apgeochem.2008.04.002



  • King DL, KP Brooks, CM Fischer, LR Pederson, GC Rawlings, VS Stenkamp, WE TeGrotenhuis, RS Wegeng, and GA Whyatt. 2005. "Fuel Reformation: Catalyst Requirements in Microchannel Architectures." Chapter 7 in Microreactor Technology and Process Intensification, ACS Symposium Series, vol. 914, ed. Yong Wang and Jamelyn D. Holladay, pp. 119-128.  American Chemical Society, Washington, DC. 
  • Brooks KP, JM Davis, CM Fischer, DL King, LR Pederson, GC Rawlings, VS Stenkamp, WE TeGrotenhuis, RS Wegeng, and GA Whyatt. 2005. "Fuel Reformation: Microchannel Reactor Design." Chapter 15 in Microreactor Technology and Process Intensification : ACS Symposium Series, vol. 914, ed. Yong Wang and Jamelyn D. Holladay, pp. 238-257.  Oxford University Press, New York, NY. 


  • Mattigod SV, GA Whyatt, RJ Serne, and MI 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, vol. 824, ed. John M. Hanchar, Simcha Stores-Gascoyne, Lauren Browning, pp. 391-398.  Materials Research Society, Warrendale, PA. 
  • Whyatt GA, CM Fischer, and JM Davis. 2004. "Development of a Rapid-Start On-Board Automotive Steam Reformer." In Proceedings of the AIChE 2004 Spring National Meeting, p. Paper No. 120c.  American Institute of Chemical Engineers, New York, NY. 


  • Whyatt GA, CM Fischer, and JM 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, pp. 85-98.  AIChE, New York, NY. 
  • Whyatt GA, WE TeGrotenhuis, JGH Geeting, JM Davis, RS Wegeng, and LR 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 , pp. 303-312.  Springer, Berlin. 



  • Kincaid CT, MP Bergeron, CR Cole, MD Freshley, VG Johnson, DI Kaplan, RJ Serne, GP Streile, DL Strenge, PD Thorne, LW Vail, GA Whyatt, and SK Wurstner. 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, ed. Fred T. Price, Kevin V Brix, and Nancy K. Lane, pp. 104 - 117.  Am. Soc. For Testing and Materials, West Conshohocken, PA. 

Energy and Environment

Core Research Areas