Skip to Main Content U.S. Department of Energy
Energy and Environment Directorate

Robert Dagle

Robert Dagle

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 371-6264


Mr. Dagle’s research interests lie in the area of heterogeneous catalysis and chemical process development. Currently, Mr. Dagle manages projects for the Department of Energy’s Bioenergy Technologies Office (DOE-BETO) in the area of thermochemical conversions. Research experience with multiple catalytic process applications include: steam reforming of hydrocarbons and bio-derived oxygenates for H2 production, conversion of bio-derived light oxygenates (e.g., ethanol, acetic acid) to fuels and chemicals, catalytic combustion, water-gas-shift catalysis, reactive distillation, syngas conversion technologies (e.g., synthesis of alcohols, transportation fuels, synthetic natural gas, and hydrogen), and chemical synthesis (e.g., acetic acid, olefins, alcohols). Mr. Dagle also has development experience with integrating engineered catalysts within novel reactor architectures for process intensification purpose (e.g., meso- and micro-channel technology). His work has benefited clientele in both the government and private industry arena and has resulted in numerous journal articles, book chapters, and presentations. Responsibilities include keeping current with associated R&D technology areas, developing and writing proposals, leading projects, and mentoring of junior staff and students. Mr. Dagle has authored > 30 peer reviewed publications, 6 book chapters, 10 issued U.S. patents, and 1 R&D 100 award (2014).

Research Interests

  • Heterogeneous Catalysis
  • Chemical Process Development

Education and Credentials

  • B.S., Chemical Engineering, Washington State University, Pullman, WA 1999
  • M.S., Chemical Engineering, Washington State University, Tri-Cities, WA 2005

Affiliations and Professional Service

  • American Chemical Society (ACS)

PNNL Patents

PNNL Publications


  • Dagle V, MD Flake, TL Lemmon, J Saavedra Lopez, L Kovarik, and RA Dagle. 2018. "Effect of the SiO2 Support on the Catalytic Performance of Ag/ZrO2/SiO2 Catalysts for the Single-Bed Production of Butadiene from Ethanol." Applied Catalysis. B, Environmental 236:576-587.  doi:10.1016/j.apcatb.2018.05.055


  • Spies KA, JE Rainbolt, XS Li, B Braunberger, L Li, DL King, and RA Dagle. 2017. "Warm Cleanup of Coal-Derived Syngas: Multicontaminant Removal Process Demonstration." Energy and Fuels 31(3):2448-2456.  doi:10.1021/acs.energyfuels.6b02568
  • Dagle RA, V Dagle, MD Bearden, JD Holladay, TR Krause, and S Ahmed. 2017. An Overview of Natural Gas Conversion Technologies for Co-Production of Hydrogen and Value-Added Solid Carbon ProductsPNNL-26726, Pacific Northwest National Laboratory, Richland, WA. 
  • Davidson SD, KA Spies, D Mei, L Kovarik, IV Kutnyakov, XS Li, V Dagle, KO Albrecht, and RA Dagle. 2017. "Steam Reforming of Acetic Acid over Co-supported Catalysts: Coupling Ketonization for Greater Stability." ACS Sustainable Chemistry & Engineering 5(10):9136-9149.  doi:10.1021/acssuschemeng.7b02052


  • Lebarbier VM, CD Smith, MD Flake, KO Albrecht, MJ Gray, KK Ramasamy, and RA Dagle. 2016. "Integrated Process for the Catalytic Conversion of Biomass-Derived Syngas into Transportation Fuels." Green Chemistry 18(7):1880-1891.  doi:10.1039/c5gc02298c
  • Lebarbier VM, RA Dagle, L Kovarik, A Genc, Y Wang, ME Bowden, H Wan, MD Flake, VA Glezakou, DL King, and RJ Rousseau. 2016. "Steam Reforming of Hydrocarbons from Biomass-Derived Syngas over MgAl2O4-Supported Transition Metals and Bimetallic IrNi Catalysts." Applied Catalysis. B, Environmental 184:142-152.  doi:10.1016/j.apcatb.2015.11.022
  • Smith CD, VM Lebarbier, MD Flake, KK Ramasamy, L Kovarik, ME Bowden, T Onfroy, and RA Dagle. 2016. "Conversion of Syngas-Derived C2+ Mixed Oxygenates to C3-C5 Olefins over ZnxZryOz Mixed Oxides Catalysts." Catalysis Today 6(7):2325-2316.  doi:10.1039/C5CY01261A
  • Tan E, LJ Snowden-Swan, M Talmadge, A Dutta, SB Jones, K Kallupalayam Ramasamy, MJ Gray, RA Dagle, AB Padmaperuma, MA Gerber, AH Sahir, L Tao, and Y Zhang. 2016. "Comparative Techno-economic Analysis and Process Design for Indirect Liquefaction Pathways to Distillate-range Fuels via Biomass-derived Oxygenated Intermediates Upgrading." Biofuels, Bioproducts & Biorefining 11(1):41-66.  doi:10.1002/bbb.1710
  • Xing R, VM Lebarbier, MD Flake, L Kovarik, KO Albrecht, CA Deshmane, and RA Dagle. 2016. "Steam Reforming of Fast Pyrolysis-Derived Aqueous Phase Oxygenates over Co, Ni, and Rh Metals Supported on MgAl2O4." Catalysis Today 269:166-174.  doi:10.1016/j.cattod.2015.11.046


  • Mei D, VM Lebarbier, R Xing, KO Albrecht, and RA Dagle. 2015. "Steam Reforming of Ethylene Glycol over MgAl2O4 Supported Rh, Ni, and Co Catalysts." ACS Catalysis 6(1):315-325.  doi:10.1021/acscatal.5b01666
  • Zheng F, R Diver, DD Caldwell, BG Fritz, RJ Cameron, PH Humble, WE TeGrotenhuis, RA Dagle, and RS Wegeng. 2015. "Integrated solar thermochemical reaction system for steam methane reforming." Energy Procedia 69:1192-1200.  doi:10.1016/j.egypro.2015.03.204


  • Dagle RA, DL King, XS Li, R Xing, KA Spies, Y Zhu, JE Rainbolt, L Li, and B Braunberger. 2014. Coal-Derived Warm Syngas Purification and CO2 Capture-Assisted Methane ProductionPNNL-23777, Pacific Northwest National Laboratory, Richland, WA. 
  • Dagle RA, JA Lizarazo Adarme, VMC Lebarbier, MJ Gray, JF White, DL King, and DR Palo. 2014. "Syngas Conversion to Gasoline-Range Hydrocarbons over Pd/ZnO/Al2O3 and ZSM-5 Composite Catalyst System." Fuel Processing Technology 123:65-74.  doi:10.1016/j.fuproc.2014.01.041
  • Kwak JH, RA Dagle, GC Tustin, JR Zoeller, LF Allard, and Y Wang. 2014. "Molecular Active Sites in Heterogeneous Ir-La/C Catalyzed Carbonylation of Methanol to Acetates." Journal of Physical Chemistry Letters 5(3):566-572.  doi:10.1021/jz402728e
  • Lebarbier Dagel VM, J Li, CE Taylor, JR, Y Wang, RA Dagle, CA Deshmane, and X Bao. 2014. Task 3.3: Warm Syngas Cleanup and Catalytic Processes for Syngas Conversion to Fuels Subtask 3: Advanced Syngas Conversion to Fuels PNNL-23207, Pacific Northwest National Laboratory, Richland, WA. 
  • Lebarbier Dagel VM, RA Dagle, J Li, CA Deshmane, CE Taylor, X Bao, and Y Wang. 2014. "Direct Conversion of Syngas-to-Hydrocarbons over Higher Alcohols Synthesis Catalysts Mixed with HZSM-5." Industrial and Engineering Chemistry Research 53(36):13928-13934.  doi:10.1021/ie502425d
  • Lebarbier VMC, RA Dagle, L Kovarik, KO Albrecht, XS Li, L Li, CE Taylor, X Bao, and Y Wang. 2014. "Sorption-Enhanced Synthetic Natural Gas (SNG) Production from Syngas: A Novel Process Combining CO Methanation, Water-Gas Shift, and CO2 Capture." Applied Catalysis. B, Environmental 144:223-232.  doi:10.1016/j.apcatb.2013.06.034
  • Mei D, VA Glezakou, VMC Lebarbier, L Kovarik, H Wan, KO Albrecht, MA Gerber, RJ Rousseau, and RA Dagle. 2014. "Highly Active and Stable MgAl2O4 Supported Rh and Ir Catalysts for Methane Steam Reforming: A Combined Experimental and Theoretical Study." Journal of Catalysis 316:11-23.  doi:10.1016/j.jcat.2014.04.021


  • Dagle RA, J Hu, SB Jones, WA Wilcox, JG Frye, JF White, J Jiang, and Y Wang. 2013. "Carbon Dioxide Conversion to Valuable Chemical Products over Composite Catalytic Systems." Journal of Energy Chemistry 22(3):368-374.  doi:10.1016/S2095-4956(13)60047-9
  • Dagle RA, VM Lebarbier, KO Albrecht, J Li, CE Taylor, X Bao, and Y Wang. 2013. "Syngas Conversion to Hydrocarbon Fuels through Mixed Alcohol Intermediates." In 23rd North American Catalysis Society Meeting, June 2-7, 2013, Louisville, Kentucky, pp. Paper No. P-M-BRC-147.  North American Catalysis Society, N/A. 
  • Dagle RA, VMC Lebarbier, JA Lizarazo Adarme, DL King, Y Zhu, MJ Gray, SB Jones, MJ Biddy, RT Hallen, Y Wang, JF White, JE Holladay, and DR Palo. 2013. Single-Step Syngas-to-Distillates (S2D) Synthesis via Methanol and Dimethyl Ether Intermediates: Final ReportPNNL-22984, Pacific Northwest National Laboratory, Richland, WA. 
  • Howard CJ, RA Dagle, VMC Lebarbier, JE Rainbolt, L Li, and DL King. 2013. "Progress toward Biomass and Coal-Derived Syngas Warm Cleanup: Proof-of-Concept Process Demonstration of Multicontaminant Removal for Biomass Application." Industrial and Engineering Chemistry Research 52(24):8125-8138.  doi:10.1021/ie4004927
  • Mei D, VMC Lebarbier, RJ Rousseau, VA Glezakou, KO Albrecht, L Kovarik, MD Flake, and RA Dagle. 2013. "Comparative Investigation of Benzene Steam Reforming over Spinel Supported Rh and Ir Catalysts." ACS Catalysis 3(6):1133-1143.  doi:10.1021/cs4000427


  • Zhu Y, SB Jones, MJ Biddy, RA Dagle, and DR Palo. 2012. "Single-Step Syngas-to-Distillates (S2D) Process Based on Biomass-Derived Syngas - A Techno-Economic Analysis ." Bioresource Technology 117:341-351.  doi:10.1016/j.biortech.2012.04.027
  • Lebarbier VMC, RA Dagle, L Kovarik, JA Lizarazo Adarme, DL King, and DR Palo. 2012. "Synthesis of Methanol and Dimethyl Ether from Syngas over Pd/ZnO/Al2O3 Catalysts." Catalysis Science & Technology 2(10):2116-2127.  doi:10.1039/C2CY20315D


  • Dagle RA, AM Karim, G Li, Y Su, and DL King. 2011. "Syngas Conditioning." Chapter 12 in Fuel Cells: Technologies for Fuel Processing, ed. D Shekhawat, JJ Spivey and DA Berry, pp. 361-408.  Elsevier, Amsterdam, Netherlands. 


  • Lebarbier VMC, RA Dagle, AK Datye, and Y Wang. 2010. "The effect of PdZn particle size on reverse-water-gas-shift reaction ." Applied Catalysis. A, General 379(1-2):3-6. 
  • Li L, CJ Howard, DL King, MA Gerber, RA Dagle, and DJ Stevens. 2010. "Regeneration of Sulfur Deactivated Ni-based Biomass Syngas Cleaning Catalysts." Industrial and Engineering Chemistry Research 49(20):10144-10148.  doi:10.1021/ie101032x


  • Dagle RA, and RS Wegeng. 2008. "Microchannel CO Methanation Reactors for Martian and Lunar ISRU." In Proceedigns of the 6th International Energy Conversion Engineering Conference (IECEC 2008), vol. 2, pp. 1123-1130.  American Institute of Aeronautics and Astronautics, Reston, VA. 
  • Dagle RA, A Platon, AK Datye, JM Vohs, Y Wang, and DR Palo. 2008. "PdZnAl Catalysts for the Reactions of Water-Gas-Shift, Methanol Steam Reforming, and Reverse-Water-Gas-Shift." Applied Catalysis. A, General 342(1-2):63-68.  doi:10.1016/j.apcata.2008.03.005
  • Hu J, RA Dagle, BR Johnson, HW Kreuzer, DJ Gaspar, BQ Roberts, and ML Alexander. 2008. "Development of a Micropyrolyzer for Enhanced Isotope Ratio Measurement." Industrial and Engineering Chemistry Research 47(22):8625-8630.  doi:10.1021/ie8009236
  • Lebarbier VMC, RA Dagle, T Conant, JM Vohs, AK Datye, and Y Wang. 2008. "CO/FTIR Spectroscopic Characterization of Pd/ZnO/Al2O3 Catalysts for Methanol Steam Reforming." Catalysis Letters 122(3-4):223-227.  doi:10.1007/s10562-008-9407-7


  • Dagle RA, YH Chin, and Y Wang. 2007. "The Effects of PdZn Crystallite Size on Methanol Steam Reforming." Topics in Catalysis 46(3-4):358-362.  doi:10.1007/s11244-007-9009-4
  • Palo DR, RA Dagle, and JD Holladay. 2007. "Methanol Steam Reforming for Hydrogen Production." Chemical Reviews 107(10):3992-4021.  doi:10.1021/cr050198b
  • Dagle RA, Y Wang, G Xia, JJ Strohm, JD Holladay, and DR Palo. 2007. "Selective CO Methanation Catalysts for Fuel Processing Applications." Applied Catalysis. A, General 326(2):213-218. 
  • Johnson BR, NL Canfield, DN Tran, RA Dagle, XS Li, JD Holladay, and Y Wang. 2007. "Engineered SMR catalysts based on hydrothermally stable, porous, ceramic supports for microchannel reactors." Catalysis Today 120(1):54-62. 
  • Palo DR, VS Stenkamp, JD Holladay, PH Humble, RA Dagle, and KP Brooks. 2007. "Non-Reactor Micro-Component Development." Chapter 7 in Micro-Instrumentation for High Throughput Experimentation and Process Intensification, ed. MV Koch, KM VandenBussche, R Chrisman, pp. 131-180.  Wiley-VHC, Weinheim, Germany. 


  • Palo DR, VS Stenkamp, RA Dagle, and GN Jovanovic. 2006. "Industrial Applications of Microchannel Process Technology in the United States." Chapter 13 in Micro Process Engineering, vol. 5, ed. N Kockmann, pp. 387-414.  Wiley-VCH, Germany, United Kingdom. 


  • Holladay JD, EO Jones, RA Dagle, G Xia, C Cao, and Y Wang. 2005. "Miniaturization of a Hydrogen Plant." Chapter 10 in Microreactor Technology and Process Intensification, ACS Symposium Series, vol. 914, ed. Yong Wang and Jamelyn D. Holladay, pp. 162-178.  American Chemical Society, Washington, DC. 
  • Palo DR, JD Holladay, RA Dagle, and YH Chin. 2005. "Integrated Methanol Fuel Processors for Portable Fuel Cell Systems." Chapter 13 in Microreactor Technology and Process Intensification, ACS Symposium Series, vol. 914, ed. Yong Wang and Jamelyn D. Holladay, pp. 209-223.  American Chemical Society, Washington, DC. 
  • Palo DR, JD Holladay, RA Dagle, and YH Chin. 2005. "Integrated Methanol Fuel Processors for Portable Fuel Cell Systems." In Microreactor Technology and Process Intensification, ACS Symposium Series 914, pp. 209-223.  American Chemical Society, Washington. 
  • Xia G, JD Holladay, RA Dagle, EO Jones, and Y Wang. 2005. "Development of Highly Active Pd-ZnO/Al2O3 Catalysts for Microscale Fuel Processor Applications." Chemical Engineering and Technology 28(4):515-519. 


  • Holladay JD, EO Jones, RA Dagle, G Xia, C Cao, and Y Wang. 2004. "High Efficiency and Low Carbon Monoxide Micro-scale Methanol Processors." Journal of Power Sources 131(1-2):69-72. 


  • Palo DR, EG Baker, YH Chin, JD Holladay, and RA Dagle. 2003. "Fuel Processor Development for a Soldier-Portable Power System." In AIChE 2003 Spring National Meeting, 2nd Topical Conference on Fuel Cell Technology , pp. 143-147.  AIChE, New York, NY. 
  • Chin YH, Y Wang, RA Dagle, and XS Li. 2003. "Methanol steam reforming over Pd/ZnO: catalyst preparation and pretreatment studies." Fuel Processing Technology 83(1-3):193-201. 
  • Holladay JD, EO Jones, DR Palo, MR Phelps, YH Chin, RA Dagle, J Hu, Y Wang, and EG Baker. 2003. "Miniature Fuel Processors for Portable Fuel Cell Power Supplies." In Solid State Ionics--2002 : Symposium held December 2-5, 2002, Boston, Massachusetts, U.S.A. / Materials Research Society Symposium Proceedings, vol. 756, ed. Philippe Knauth and Hubert A. Gasteiger, pp. 429-434.  Materials Research Society, Warrendale, PA. 
  • Hu J, Y Wang, DP Vanderwiel, YH Chin, DR Palo, RT Rozmiarek, RA Dagle, C Cao, JD Holladay, and EG Baker. 2003. "Fuel Processing for Portable Power Applications." Chemical Engineering Journal 93(1):55-60. 


  • Palo DR, JD Holladay, RT Rozmiarek, CE Guzman-Leong, Y Wang, J Hu, YH Chin, RA Dagle, and EG Baker. 2002. "Development of a Soldier-Portable Fuel Cell Power System, Part I: A Bread-Board Methanol Fuel Processor." Journal of Power Sources 108(1-2):28-34. 
  • Palo DR, JD Holladay, RT Rozmiarek, CE Guzman-Leong, Y Wang, J Hu, YH Chin, RA Dagle, and EG Baker. 2002. "Fuel Processor Development for a Soldier-Portable Fuel Cell System." In Microreaction Technology, IMRET 5: Proceedings of the Fifth International Conference on Microreaction Technology, ed. M. Matlosz, W. Ehrfeld, J.P. Baselt, pp. 359-367.  Springer-Verlag, Berlin, , GERMANY. 
  • Chin YH, RA Dagle, J Hu, A Dohnalkova, and Y Wang. 2002. "Steam Reforming of Methanol over Highly Active Pd/ZnO Catalyst ." Catalysis Today 77(1-2):79-88. 
  • Chin YH, RA Dagle, J Hu, A Dohnalkova, and Y Wang. 2002. "Steam Reforming of Methanol Over Highly Active Pd/ZnO Catalyst." Catalysis Today 77 (1-2)(DEC 1 2002):79-88. 
  • Hu J, Y Wang, YH Chin, DR Palo, JD Holladay, RT Rozmiarek, RA Dagle, C Cao, and EG Baker. 2002. "Catalytic Hydrogen Production for Small Portable Power Applications." In ACS Annual Meeting, Fuel Chemistry Division Preprints, Boston, Massachusetts, vol. 47, no. 2, pp. 725-726.  American Chemical Society, Washington DC. 

Energy and Environment

Core Research Areas