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Chemical and Biological Process Development

Karthi Ramasamy

Karthi Ramasamy

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Mr. Karthi, Process Engineer, holds BS degree in Chemical Engineering and MS in Environmental Engineering. Prior to joining Battelle/PNNL Mr. Karthi was a Research Engineer at Florida Solar Energy Center, Cocoa, FL from 2002 to 2008. He was involved in process development, laboratory and demonstration scale unit fabrication and optimization. He has been at Battelle/PNNL since January 2009. During his time at PNNL, Mr. Karthi has been involved in the research and process development of producing specialty chemical from the biomass material through thermo chemical process. His current focus is on converting oxygenats to fuels.

PNNL Patents

Research Interests

  • Renewable fuels
  • Renewable chemicals
  • Supercritical water reformation
  • Catalysis

Education and Credentials

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

PNNL Publications


  • 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.


  • Jovanovic I., S.B. Jones, D.M. Santosa, Z. Dai, K.K. Ramasamy, and Y. Zhu. 2010. A survey of Opportunities for Microbial Conversion of Biomass to Hydrocarbon Compatible Fuels. PNNL-19704. Richland, WA: Pacific Northwest National Laboratory.

Chemical and Biological Process Development

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