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Fundamental and Computational Sciences Directorate

Staff information

Abhijeet Karkamkar

Catalysis Science
Scientist, Team Lead
Pacific Northwest National Laboratory
PO Box 999
MSIN: K2-57
Richland, WA 99352

PNNL Publications


  • Malhotra D, JP Page, ME Bowden, AJ Karkamkar, DJ Heldebrant, VA Glezakou, RJ Rousseau, and PK Koech. 2017. "Phase-Change Aminopyridines as Carbon Dioxide Capture Solvents." Industrial and Engineering Chemistry Research 56(26):7534-7540.  doi:10.1021/acs.iecr.7b00874


  • Whittemore SM, ME Bowden, AJ Karkamkar, KK Parab, D Neiner, T Autrey, JS Ishisbashi, G Chen, SY Liu, and DA Dixon. 2016. "Blending materials composed of Boron, Nitrogen and Carbon to transform approaches to Liquid Hydrogen Stores." Dalton Transactions 45(14):6196-6203.  doi:10.1039/C5DT04276C
  • Brooks KP, ME Bowden, AJ Karkamkar, AY Houghton, and T Autrey. 2016. "Coupling of Exothermic and Endothermic Hydrogen Storage Materials." Journal of Power Sources 324:170-178.  doi:10.1016/j.jpowsour.2016.05.067
  • Ramasamy KK, MJ Gray, HM Job, DM Santosa, XS Li, A Devaraj, AJ Karkamkar, and Y Wang. 2016. "Role of Calcination Temperature on the Hydrotalcite Derived MgO-Al2O3 in Converting Ethanol to Butanol." Topics in Catalysis 59(1):46-54.  doi:10.1007/s11244-015-0504-8


  • Chen G, LN Zakharov, ME Bowden, AJ Karkamkar, SM Whittemore, EB Garner, TC Mikulas, DA Dixon, T Autrey, and SY Liu. 2015. "Bis-BN Cyclohexane: A Remarkably Kinetically Stable Chemical Hydrogen Storage Material." Journal of the American Chemical Society 137(1):134-137.  doi:10.1021/ja511766p
  • Choi YJ, MP Westman, AJ Karkamkar, J Chun, and E Ronnebro. 2015. "Synthesis and Engineering Materials Properties of Fluid Phase Chemical Hydrogen Storage Materials for Automotive Applications." Energy and Fuels 29(10):6695-6703.  doi:10.1021/acs.energyfuels.5b01307
  • Schwenzer B, L Cosimbescu, VA Glezakou, AJ Karkamkar, Z Wang, and RS Weber. 2015. "Use of Solvatochromism to Assay Preferential Solvation of a Prototypic Catalytic Site." Topics in Catalysis 58(4-6):258-270.  doi:10.1007/s11244-015-0367-z


  • Choi YJ, E Ronnebro, SD Rassat, AJ Karkamkar, GD Maupin, JD Holladay, KL Simmons, and KP Brooks. 2014. "Kinetics Study of Solid Ammonia Borane Hydrogen Release - Modeling and Experimental Validation for Chemical Hydrogen Storage." Physical Chemistry Chemical Physics. PCCP 16(17):7959-7968.  doi:10.1039/C3CP55280B
  • Lercher JA, AM Appel, T Autrey, RM Bullock, DM Camaioni, HM Cho, DA Dixon, Z Dohnalek, F Gao, VA Glezakou, MA Henderson, JZ Hu, E Iglesia, AJ Karkamkar, BD Kay, GA Kimmel, JC Linehan, J Liu, I Lyubinetsky, D Mei, CHF Peden, RJ Rousseau, GK Schenter, WJ Shaw, J Szanyi, H Wang, Y Wang, and RS Weber. 2014. "Multifunctional Catalysts to Synthesize and Utilize Energy Carriers." In Frontiers at the Interface between Homogeneous and Heterogeneous Catalysis, II, pp. 207-219.  U.S. Department of Energy, Office of Science, Washington, DC. 
  • Yadav M, JC Linehan, AJ Karkamkar, EF Van Der Eide, and DJ Heldebrant. 2014. "Homogeneous Hydrogenation of CO2 to Methyl Formate Utilizing Switchable Ionic Liquids." Inorganic Chemistry 53(18):9849-9854.  doi:10.1021/ic501378w


  • Karkamkar AJ, K Parab, DM Camaioni, D Neiner, HM Cho, TK Nielsen, and T Autrey. 2013. "A Thermodynamic and Kenetic Study of the Heterolytic Activation of Hydrogen by Frustrated Borane-Amine Lewis Pairs." Dalton Transactions 42(3):615-619.  doi:10.1039/c2dt31628e
  • Cantelli R, A Paolone, O Palumbo, F Leardini, T Autrey, AJ Karkamkar, and AT Luedtke. 2013. "Rotational dynamics in ammonia borane: Evidence of strong isotope effects." Journal of Alloys and Compounds 580(Supplement 1):S63-S66.  doi:10.1016/j.jallcom.2013.03.148
  • Luo W, D Neiner, AJ Karkamkar, K Parab, EB Garner, DA Dixon, DW Matson, T Autrey, and SY Liu. 2013. "3-Methyl-1,2-BN-Cyclopentane: A Promising H2 Storage Material?" Dalton Transactions 42(3):611-614.  doi:10.1039/c2dt31617j
  • Nielsen TK, AJ Karkamkar, ME Bowden, F Besenbacher, TR Jensen, and T Autrey. 2013. "Methods to Stabilize and Destabilize Ammonium Borohydride." Dalton Transactions 42(3):680-687.  doi:10.1039/C2DT31591B


  • Aijaz A, AJ Karkamkar, YJ Choi, N Tsumori, E Ronnebro, T Autrey, H Shioyama, and Q Xu. 2012. "Immobilizing Highly Catalytically Active Pt Nanoparticles inside the Pores of Metal-Organic Framework: A Double Solvents Approach ." Journal of the American Chemical Society 134(34):13926-13929.  doi:10.1021/ja3043905


  • Autrey T, ME Bowden, and AJ Karkamkar. 2011. "Control of hydrogen release and uptake in amine borane molecular complexes: Thermodynamics of ammonia borane, ammonium borohydride, and the diammoniate of diborane." Faraday Discussions 151(0):157-169.  doi:10.1039/C0FD00015A
  • Chong M, AJ Karkamkar, T Autrey, S Orimo, S Jalisatgi, and CM Jensen. 2011. "Reversible Dehydrogenation of Magnesium Borohydride to Magnesium Triborane in the Solid State Under Moderate Conditions." Chemical Communications 47(4):1330-1332.  doi:10.1039/C0CC03461D
  • Liu W, Y Rao, H Wan, AJ Karkamkar, J Liu, and LQ Wang. 2011. "Bubbling Reactor Technology for Rapid Synthesis of Uniform, Small MFI-Type Zeolite Crystals ." Industrial and Engineering Chemistry Research 50(12):7241-7250.  doi:10.1021/ie102069z
  • Neiner D, AJ Karkamkar, M Bowden, YJ Choi, AT Luedtke, JD Holladay, AM Fisher, N Szymczak, and T Autrey. 2011. "Kinetic and Thermodynamic Investigation of Hydrogen Release from Ethane 1,2-di-amineborane." Energy & Environmental Science 4(10):4187-4193.  doi:10.1039/C1EE01884A
  • Nurmi J, V Sarathy, PG Tratnyek, DR Baer, JE Amonette, and AJ Karkamkar. 2011. "Recovery of Iron/Iron Oxide Nanoparticles from Solution: Comparison of Methods and their Effects." Journal of Nanoparticle Research 13(5):1937-1952.  doi:10.1007/s11051-010-9946-x


  • Bowden ME, DJ Heldebrant, AJ Karkamkar, TE Proffen, GK Schenter, and T Autrey. 2010. "The diammoniate of diborane: Crystal structure and hydrogen release." Chemical Communications 46(45):8564-8566.  doi:10.1039/C0CC03249B
  • Chua YS, G Wu, Z Xiong, AJ Karkamkar, J Guo, M Jian, MW Wong, T Autrey, and P Chen. 2010. "Synthesis, Structure and Dehydrogenation of Magnesium Amidoborane Monoammoniate." Chemical Communications 46(31):5752-5754. 
  • Kim HJ, AJ Karkamkar, T Autrey, P Chupas, and TE Proffen. 2010. "Storing Hydrogen." In APs Science 2009, ANL-10/06, pp. 48-49.  Argonnen National Laboratory, Argonne, IL. 
  • Neiner D, AT Luedtke, AJ Karkamkar, WJ Shaw, J Wang, N Browning, T Autrey, and SM Kauzlarich. 2010. "Decomposition Pathway of Ammonia Borane on the Surface of nano-BN." Journal of Physical Chemistry C 114(32):13935-13941. 
  • Shaw WJ, ME Bowden, AJ Karkamkar, CJ Howard, DJ Heldebrant, NJ Hess, JC Linehan, and T Autrey. 2010. "Characterization of a New Phase of Ammonia Borane." Energy & Environmental Science 3(6):796-804. 


  • Karkamkar AJ, SM Kathmann, GK Schenter, DJ Heldebrant, NJ Hess, MS Gutowski, and T Autrey. 2009. "Thermodynamic and Structural Investigations of Ammonium Borohydride, a Solid with a Highest Content of Thermodynamically and Kinetically Accessible Hydrogen." Chemistry of Materials 21(19):4356-4358.  doi:10.1021/cm902385c
  • Kathmann SM, VM Parvanov, GK Schenter, AC Stowe, LL Daemen, MA Hartl, JC Linehan, NJ Hess, AJ Karkamkar, and T Autrey. 2009. "Experimental and Computational Studies on Collective Hydrogen Dynamics in Ammonia Borane: Incoherent Inelastic Neutron Scattering." Journal of Chemical Physics 130(2):article no. 024507.  doi:10.1063/1.3042270
  • Kim HJ, AJ Karkamkar, T Autrey, P Chupas, and TE Proffen. 2009. "Determination of structure and phase transition of light element nanocomposites in mesoporous silica: case study of NH3BH3 in MCM-41." Journal of the American Chemical Society 131(38):13749-13755. 
  • Neiner D, AJ Karkamkar, JC Linehan, BW Arey, T Autrey, and SM Kauzlarich. 2009. "Promotion of Hydrogen Release from Ammonia Borane with Mechanically Activated Hexagonal Boron Nitride." Journal of Physical Chemistry C 113(3):1098-1103.  doi:10.1021/jp8087385
  • Paolone A, O Palumbo, P Rispoli, R Cantelli, T Autrey, and AJ Karkamkar. 2009. "Absence of the structural phase transition in ammonia borane dispersed in mesoporous silica: evidence of novel thermodynamic properties ." Journal of Physical Chemistry C 113(24):10319-10321. 
  • Wang LQ, AJ Karkamkar, T Autrey, and GJ Exarhos. 2009. "Hyperpolarized Xe-129 NMR Investigation of Ammonia Borane in Mesoporous Silica ." Journal of Physical Chemistry C 113(16):6485-6490. 


  • Karkamkar AJ. 2008. Measurements of BET Surface Area on Silica NanospringsPNNL-17648, Pacific Northwest National Laboratory, Richland, WA. 
  • Cho HM, WJ Shaw, VM Parvanov, GK Schenter, AJ Karkamkar, NJ Hess, CJ Mundy, SM Kathmann, JA Sears, Jr, AS Lipton, PD Ellis, and T Autrey. 2008. "Molecular Structure and Dynamics in the Low Temperature (Orthorhombic) Phase of NH3BH3." Journal of Physical Chemistry A 112(18):4277-4283. 
  • Heldebrant DJ, AJ Karkamkar, JC Linehan, and T Autrey. 2008. "Synthesis of Ammonia Borane for Hydrogen Storage Applications." Energy & Environmental Science 1(1):156-160. 
  • Heldebrant DJ, AJ Karkamkar, JC Linehan, and T Autrey. 2008. "Synthesis of Ammonia Borane for Hydrogen Storage Applications." Energy & Environmental Science 1(1):156-160.  doi:10.1039/b808865a
  • Heldebrant DJ, AJ Karkamkar, NJ Hess, ME Bowden, SD Rassat, F Zheng, KG Rappe, and T Autrey. 2008. "The Effects of Chemical Additives on the Induction Phase in Solid-State Thermal Decomposition of Ammonia Borane." Chemistry of Materials 20(16):5332-5336.  doi:10.1021/cm801253u
  • Hess NJ, MR Hartman, C Brown, E Mamontov, AJ Karkamkar, DJ Heldebrant, LL Daemen, and T Autrey. 2008. "Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics in orthorhombic ammonia borane." Chemical Physics Letters 459(1-6):85-88.  doi:10.1016/j.cplett.2008.04.130
  • Xiong Z, CK Yong, G Wu, P Chen, WJ Shaw, AJ Karkamkar, T Autrey, MO Jones, S Johnson, P Edwards, and B David. 2008. "High-capacity hydrogen storage in lithium and sodium amidoboranes." Nature Materials 7(2):138-141.  doi:10.1038/nmat2081
  • Xiong Z, YS Chua, G Wu, WL Xu, P Chen, WJ Shaw, AJ Karkamkar, JC Linehan, TD Smurthwaite, and T Autrey. 2008. "Interaction of Lithium Hydride and Ammonia Borane in THF ." Chemical Communications 43:5595-5597.  doi:10.1039/b812576g


  • Karkamkar AJ, CL Aardahl, and T Autrey. 2007. "Recent Developments on Hydrogen Release from Ammonia Borane." Material Matters 2(2):6-9. 

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