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Energy and Environment Directorate

Karthi Ramasamy

Karthi Ramasamy

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 372-6976


Karthikeyan K. Ramasamy received his B. Eng. degree from Bharathiar University, India, M.S degree from University of Central Florida, Orlando, FL and Ph.D degree from Washington State University, Pullman, WA under the supervision of Yong Wang. Prior to joining PNNL Dr. Ramasamy worked as a Research Engineer at Florida Solar Energy Center, Cocoa, FL between 2002 to 2008. During this period he was involved in research focused on renewable hydrogen production and hydrogen storage. Dr. Ramasamy is currently a Senior Research Engineer at PNNL. His current research work is focused on developing heterogeneous catalyst towards producing renewable fuels and chemicals.

Research Interests

  • Heterogeneous catalyst development
  • Green chemistry development towards renewable fuels and chemicals
  • Chemical process development

Education and Credentials

  • Ph.D., Chemical Engineering, Washington State University
  • M.S., Environmental Engineering, University of Central Florida
  • B.S., Chemical Engineering, Bharathiar University, India

Affiliations and Professional Service

  • Treasurer, American Chemical Society, Catalysis Science & Technology Division (2018-Present)
  • Editorial Advisory Board, Catalysis Today (2018-Present)
  • Program Chair, American Chemical Society, Catalysis Science & Technology Division (2014-2017)
  • Member of the American Chemical Society (ACS)
  • Member of the American Institute of Chemical Engineers (AIChE)

PNNL Patents

PNNL Publications



  • Dagle R.A., A.D. Winkelman, K. Kallupalayam Ramasamy, V. Dagle, and R.S. Weber. 2020. "Ethanol as a renewable building block for fuels and chemicals." Industrial and Engineering Chemistry Research 59, no. 11:4843-4853. PNNL-SA-148314. doi:10.1021/acs.iecr.9b05729
  • Shi H., K. Kallupalayam Ramasamy, R. Ma, and H. Wang. 2020. "Nanoporous Catalysts for Biomass Conversion." In Nanoporous Materials for Molecule Separation and Conversion, edited by J. Liu and F. Ding. 387-440. PNNL-SA-152618. doi:10.1016/B978-0-12-818487-5.00012-1
  • Subramaniam S., M.F. Guo, T. Bathena, M.J. Gray, X. Zhang, A.I. Martinez, and L. Kovarik, et al. 2020. "Direct Catalytic Conversion of Ethanol to C5+ Ketones: Role of Pd-Zn Alloy on Catalytic Activity and Stability." Angewandte Chemie International Edition 59, no. 34:14550-14557. PNNL-SA-148910. doi:10.1002/anie.202005256
  • Weber R.S., and K. Kallupalayam Ramasamy. 2020. "Electrochemical Oxidation of Lignin and Waste Plastic." ACS Omega 5, no. 43:27735-27740. PNNL-SA-155219. doi:10.1021/acsomega.0c03989


  • Settle A., N.S. Cleveland, C. Farberow, D. Conklin, X. Huo, A. Dameron, and R. Tracy, et al. 2019. "Enhanced Catalyst Durability for Bio-Based Adipic Acid Production by Atomic Layer Deposition." Joule 3, no. 9:2219-2240. PNNL-SA-144252. doi:10.1016/j.joule.2019.06.022
  • Su Q., H. Dai, H. Chen, Y. Lin, Y. Xie, and K. Kallupalayam Ramasamy. 2019. "General Equilibrium Analysis of the Cobenefits and Trade-Offs of Carbon Mitigation on Local Industrial Water Use and Pollutants Discharge in China." Environmental Science & Technology 53, no. 3:1715-1724. PNNL-SA-142640. doi:10.1021/acs.est.8b05763


  • Murugesan V., M.J. Gray, M.F. Guo, H.M. Job, A. Devaraj, C.J. Szymanski, and S. Thevuthasan, et al. 2017. "Thermal Evaluation of Metal Oxides on Silica Supports." In North American Catalysis Society Meeting, June 4-9, 2017, Denver, CO, Paper No. P-T-BRM-44. PNNL-SA-122369.


  • Alvarez-Vasco C.A., R. Ma, M. Quintero, M. Guo, S.C. Geleynse, K. Kallupalayam Ramasamy, and M.P. Wolcott, et al. 2016. "Unique Low-molecular-weight Lignin with High Purity Extracted from Wood by Deep Eutectic Solvents (DES): A Source of Lignin for Valorization." Green Chemistry 18, no. 19:5133-5141. PNNL-SA-118851. doi:10.1039/C6GC01007E
  • Devaraj A., V. Murugesan, J. Bao, M.F. Guo, M.A. Derewinski, Z. Xu, and M.J. Gray, et al. 2016. "Discerning the Location and Nature of Coke Deposition from Surface to Bulk of Spent Zeolite Catalysts." Scientific Reports 6. PNNL-SA-113562. doi:10.1038/srep37586
  • Lebarbier V.M., C.D. Smith, M.D. Flake, K.O. Albrecht, M.J. Gray, K.K. Ramasamy, and R.A. Dagle. 2016. "Integrated Process for the Catalytic Conversion of Biomass-Derived Syngas into Transportation Fuels." Green Chemistry 18, no. 7:1880-1891. PNNL-SA-113248. doi:10.1039/c5gc02298c
  • Ma R., M.F. Guo, K. Lin, V. Hebert, J. Zhang, M.P. Wolcott, and M. Quintero, et al. 2016. "Peracetic Acid Depolymerization of Biorefinery Lignin for Production of Selective Monomeric Phenolic Compounds." Chemistry - A European Journal 22, no. 31:10884-10891. PNNL-SA-117752. doi:10.1002/chem.201600546
  • Ramasamy K.K., M.J. Gray, H.M. Job, C.D. Smith, and Y. Wang. 2016. "Tunable catalytic properties of bi-functional mixed oxides in ethanol conversion to high value compounds." Catalysis Today 269. PNNL-SA-115950. doi:10.1016/j.cattod.2015.11.045
  • Ramasamy K.K., M.J. Gray, H.M. Job, D.M. Santosa, X.S. Li, A. Devaraj, and A.J. Karkamkar, et al. 2016. "Role of Calcination Temperature on the Hydrotalcite Derived MgO-Al2O3 in Converting Ethanol to Butanol." Topics in Catalysis 59, no. 1:46-54. PNNL-SA-110874. doi:10.1007/s11244-015-0504-8
  • Smith C.D., V.M. Lebarbier, M.D. Flake, K.K. Ramasamy, L. Kovarik, M.E. Bowden, and T. Onfroy, et al. 2016. "Conversion of Syngas-Derived C2+ Mixed Oxygenates to C3-C5 Olefins over ZnxZryOz Mixed Oxides Catalysts." Catalysis Today 6, no. 7:2325-2316. PNNL-SA-111860. doi:10.1039/C5CY01261A
  • Tan E., L.J. Snowden-Swan, M. Talmadge, A. Dutta, S.B. Jones, K. Kallupalayam Ramasamy, and M.J. Gray, et al. 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, no. 1:41-66. PNNL-SA-120207. doi:10.1002/bbb.1710


  • Ramasamy K.K., M.J. Gray, H.M. Job, and Y. Wang. 2015. "Direct Syngas Hydrogenation over a Co-Ni Bimetallic Catalyst: Process Parameter Optimization." Chemical Engineering Science 135. PNNL-SA-107517. doi:10.1016/j.ces.2015.03.064


  • Ramasamy K.K., and Y. Wang. 2014. "Ethanol Conversion to Hydrocarbons on HZSM-5: Effect of Reaction Conditions and Si/Al Ratio on the Product Distributions." Catalysis Today 237. PNNL-SA-101512. doi:10.1016/j.cattod.2014.02.044
  • Ramasamy K.K., H. Zhang, J. Sun, and Y. Wang. 2014. "Conversion of Ethanol to Hydrocarbons on Hierarchical HZSM-5 Zeolites." Catalysis Today 238. PNNL-SA-100662. doi:10.1016/j.cattod.2014.01.037
  • Ramasamy K.K., M.A. Gerber, M.D. Flake, H. Zhang, and Y. Wang. 2014. "Conversion of Biomass-Derived Small Oxygenates over HZSM-5 and its Deactivation Mechanism." Green Chemistry 16, no. 2:748-760. PNNL-SA-97838. doi:10.1039/c3gc41369a


  • Ramasamy K.K., and Y. Wang. 2013. "Catalyst Activity Comparison of Alcohols over Zeolites." Journal of Energy Chemistry 22, no. 1:65-71. PNNL-SA-92939.
  • Ramasamy K.K., and Y. Wang. 2013. "Conversion of Methanol, Ethanol and Propanol over Zeolites." In 23rd North American Catalysis Society Meeting, June 2-7, 2013, Louisville, Kentucky, Paper No. P-Tu-BRC-67. N/A:North American Catalysis Society. PNNL-SA-92019.
  • Ramasamy K.K., and Y. Wang. 2013. "THERMOCHEMICAL CONVERSION OF FERMENTATION-DERIVED OXYGENATES TO FUELS." In Biomass Processing, Conversion and Biorefinery, edited by B Zhang and Y Wang. 289-300. Hauppauge, New York:Nova Publishers. PNNL-SA-92769.


  • Ramasamy K.K., M.A. Gerber, M.A. Lilga, and M.D. Flake. 2012. "Conversion of Mixed Oxygenates Generated from Synthesis Gas to Fuel Range Hydrocarbon." In 244th ACS National Meeting & Exposition, August 19-23, Philadelphia, Pennsylvania. Washington Dc:American Chemical Society. PNNL-SA-87111.


Energy and Environment

Core Research Areas