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Energy and Environment Directorate

Deepika Malhotra

Deepika Malhotra

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 372-6239


Dr. Deepika Malhotra joined Pacific Northwest National Laboratory (PNNL) in 2014 and currently is a Scientist in Advanced Energy Systems group in the Energy Processes and Materials Division at PNNL. Her research at PNNL is focused towards designing, synthesis and scale-up of modular solvent for CO2 capture and acid gas separations. She has extensive experience in design of new synthesis, process chemistry, scale-up, developing efficient, robust, and scalable processes for the small organic compounds and materials from grams to kilograms scale. Before joining PNNL, Dr. Malhotra worked at GlaxoSmithKline (UK), where she worked in the Immuno-Inflammation Center for Excellence in Drug Discovery (II-CEDD) developing Structure Activity Relationship (SAR) for pharmaceutical drug discovery.

Education and Credentials

  • Ph.D., Organic Chemistry, University of Louisville, 2014
  • M. S. (Hons.) in Chemistry, Panjab University, 2007
  • B. S. (Hons.) in Chemistry, Panjab University, 2005

Affiliations and Professional Service

  • Member of American Chemical Society
  • Richland LS Treasurer Richland LS Treasurer, American Chemical Society Jan 2019 — Dec 2021
  • Chair-Elect Richland LS Chair-Elect Richland LS, American Chemical Society Jan 2022 — Present
  • Program Committee Chair Richland LS, American Chemical Jan 2022 – Present
  • Selected Chair for the Richland local section of the American Chemical Society (ACS) for 2023.
  • Served as a fundraising chair for Northwest Regional Meeting (NORM) 2018 held at PNNL and was recognized by Allison A. Campbell by Service to Society award.

Awards and Recognitions

  • Outstanding Performance Award in recognition for being proactive, and scaling-up litres of solvents for programmatic success of DOE CO2 capture programs at PNNL, June 2022.
  • Pathway to Excellence Patent award for four U.S. Patent No.'s 10,434,460, 10,456,739, 10,722,837, and 10,773,205, Sep. 2021.
  • Outstanding Performance Award in recognition for the outstanding contributions in creatively and safely scaling up a novel CO2 capture solvent three months ahead of schedule. The proactive efforts ensured programmatic success for CO2 capture programs, Oct. 2020.
  • Outstanding Performance Award in recognition of exceptional contributions to enable Safe Research Operations in EP&MD during the COVID-19 pandemic, Sep. 2020.
  • 2020 Staff recognition award for outstanding efforts for 2020 EP&MD outstanding publication award.
  • "Project Team of the Year" for the Processing and Manufacturing Technologies PMOD in EED "Of-the-Year (OTY)" awards held on held on Dec. 10, 2019.
  • Besties award from Earth and Biological Sciences Directorate (EBSD) for "Service to Society for ACS Northwest Regional Meeting" in Dec. 2018.
  • Outstanding Performance award, PNNL, 2016
  • George R. Pack Outstanding Thesis Award, University of Louisville, 2014
  • Graduate Dean's Citation Award, University of Louisville, 2014
  • IMD-3 (Institute of Molecular Diversity and Drug Design) Graduate Research Fellowship award, University of Louisville, 2011
  • Bronze Recognition Award by GlaxoSmithKline, United Kingdom, 2008
  • University Rank Holder Postgraduate Merit Scholarship, MHRD-UGC 2005

PNNL Patents

PNNL Publications



  • Jiang Y., P.M. Mathias, R.F. Zheng, C.J. Freeman, D. Barpaga, D. Malhotra, and P.K. Koech, et al. 2023. "Energy-effective and low-cost carbon capture from point-sources enabled by water-lean solvents." Journal of Cleaner Production 388. PNNL-SA-176711. doi:10.1016/j.jclepro.2022.135696


  • Cosimbescu L., D. Malhotra, M. Pallaka, and M.S. Swita. 2022. "Kevlar-Like Aramid Polymers from Mixed PET Waste." ACS Omega 7, no. 36:32026-32037. PNNL-SA-169420. doi:10.1021/acsomega.2c03059


  • Nguyen M., K. Grubel, D. Zhang, P.K. Koech, D. Malhotra, S.I. Allec, and R.J. Rousseau, et al. 2021. "Amphiphilic Water-Lean Carbon Capture Solvent Wetting Behavior through Decomposition by Stainless-Steel Interfaces." ChemSusChem 14, no. 23:5283-5292. PNNL-SA-163590. doi:10.1002/cssc.202101350


  • Banuelos J.L., M. Lee, M. Nguyen, D. Zhang, D. Malhotra, D. Cantu Cantu, and V. Glezakou, et al. 2020. "Subtle Changes in Hydrogen Bond Orientation Result in Glassification of Carbon Capture Solvents." Physical Chemistry Chemical Physics 22, no. 34:19009-19021. PNNL-SA-153262. doi:10.1039/D0CP03503C
  • Cantu Cantu D., D. Malhotra, M. Nguyen, P.K. Koech, D. Zhang, V. Glezakou, and R.J. Rousseau, et al. 2020. "Molecular-Level Overhaul of y-Aminopropyl Aminosilicone/Triethylene Glycol Post-Combustion CO2-Capture Solvents." ChemSusChem 13, no. 13:3429-3438. PNNL-SA-152126. doi:10.1002/cssc.202000724
  • Malhotra D., Y. Jiang, P.K. Koech, and W. Xu. 2020. A modular chemo-selective oxygen production unit to deliver oxygen for advanced combustion systems. PNNL-30795. Richland, WA: Pacific Northwest National Laboratory. A modular chemo-selective oxygen production unit to deliver oxygen for advanced combustion systems
  • Merkel D.R., W. Kuang, D. Malhotra, G. Petrossian, L. Zhong, K.L. Simmons, and J. Zhang, et al. 2020. "Waste PET Chemical Processing to Terephthalic Amides and Their Effect on Asphalt Performance." ACS Sustainable Chemistry & Engineering 8, no. 14:5615-5625. PNNL-SA-150317. doi:10.1021/acssuschemeng.0c00036
  • 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


  • Cosimbescu L., D. Malhotra, K.B. Campbell, M.S. Swita, and Z.C. Kennedy. 2019. "Molecular Design and Shear Stability Correlations of Dendritic Polymethacrylates." Molecular Systems Design and Engineering 4, no. 6:1114-1124. PNNL-SA-145231. doi:10.1039/C9ME00081J
  • Malhotra D., D. Cantu Cantu, P.K. Koech, D.J. Heldebrant, A.J. Karkamkar, F. Zheng, and M.D. Bearden, et al. 2019. "Directed Hydrogen Bond Placement: Low Viscosity Amine Solvents for CO2 Capture." ACS Sustainable Chemistry & Engineering 7, no. 8:7535-7542. PNNL-SA-139613. doi:10.1021/acssuschemeng.8b05481
  • Polikarpov E., K.O. Albrecht, J.P. Page, D. Malhotra, P.K. Koech, L. Cosimbescu, and D.J. Gaspar. 2019. "Critical Fuel Property Evaluation for Potential Gasoline and Diesel Biofuel Blendstocks with Low Sample Volume Availability." Fuel 238. PNNL-SA-134684. doi:10.1016/j.fuel.2018.09.129


  • Yu X., J. Yao, D.B. Lao, D.J. Heldebrant, Z. Zhu, D. Malhotra, and M. Nguyen, et al. 2018. "Mesoscopic Structure Facilitates Rapid CO2 Transport and Reactivity in CO2 Capture Solvents." The Journal of Physical Chemistry Letters 9, no. 19:5765-5771. PNNL-SA-129707. doi:10.1021/acs.jpclett.8b02231


  • Cantu Cantu D., D. Malhotra, P.K. Koech, D.J. Heldebrant, F. Zheng, C.J. Freeman, and R.J. Rousseau, et al. 2017. "Integrated Solvent Design for CO2 Capture and Viscosity Tuning." Energy Procedia 114. PNNL-SA-121494. doi:10.1016/j.egypro.2017.03.1215
  • 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
  • Heldebrant D.J., P.K. Koech, V. Glezakou, R.J. Rousseau, D. Malhotra, and D. Cantu Cantu. 2017. "Water-Lean Solvents for Post-Combustion CO2 Capture: Fundamentals, Uncertainties, Opportunities and Outlook." Chemical Reviews 117, no. 14:9594-9624. PNNL-SA-122499. doi:10.1021/acs.chemrev.6b00768
  • Malhotra D., J.P. Page, M.E. Bowden, A.J. Karkamkar, D.J. Heldebrant, V. Glezakou, and R.J. Rousseau, et al. 2017. "Phase-Change Aminopyridines as Carbon Dioxide Capture Solvents." Industrial and Engineering Chemistry Research 56, no. 26:7534-7540. PNNL-SA-124645. doi:10.1021/acs.iecr.7b00874
  • Malhotra D., P.K. Koech, D.J. Heldebrant, D. Cantu Cantu, F. Zheng, V. Glezakou, and R.J. Rousseau. 2017. "Reinventing design principles for developing low-viscosity carbon dioxide-binding organic liquids for flue gas clean up." ChemSusChem 10, no. 3:636-642. PNNL-SA-121959. doi:10.1002/cssc.201601622


  • Cantu Cantu D., D. Malhotra, P.K. Koech, D.J. Heldebrant, F. Zheng, C.J. Freeman, and R.J. Rousseau, et al. 2016. "Structure-Property Reduced Order Model for Viscosity Prediction in Single-Component CO2- Binding Organic Liquids." Green Chemistry 18, no. 22:10.1039/C6GC02203K. PNNL-SA-119405. doi:10.1039/c6gc02203k


  • Koech P.K., D. Malhotra, D.J. Heldebrant, D. Cantu Cantu, V.A. Glezakou, and R.J. Rousseau. 2015. "Synthesis and characterization of low viscosity carbon dioxide binding organic liquids for flue gas clean up." In Energy & Fuels Preprints Presented at the 249th ACS National Meeting & Exposition, March 22-26, 2015, Denver, Colorado, 60, 628-630. Washington, District Of Columbia:American Chemical Society. PNNL-SA-106437.


  • Heldebrant D.J., V.A. Glezakou, P.K. Koech, P.M. Mathias, D. Cantu Cantu, R.J. Rousseau, and D. Malhotra, et al. 2014. "Evaluating transformational solvent systems for post-combustion CO2 separations." Energy Procedia 63. PNNL-SA-115535. doi:10.1016/j.egypro.2015.12.336

Energy and Environment

Core Research Areas