PNNL

My research interests lie at the intersection of materials science, surface chemistry, adsorption, and heterogeneous catalysis, with a particular emphasis on understanding structure-function relationships using a suite of spectroscopic techniques and kinetic measurements.

• Catalysis 
• Adsorption 
• Materials synthesis
• Materials characterization

• PhD in chemical engineering, University of South Carolina
• BS in chemistry, Lomonosov Moscow State University, Russia
• MS in chemistry, Lomonosov Moscow State University, Russia

• Editorial Board Member, Scientific Reports (Impact Factor 4.997)
• Early Career Editorial Board Member, Applied Catalysis B: Environmental (Impact Factor 24.319)

• Pathway to Excellence (Patent) Award, Pacific Northwest National Laboratory (2022)
• Outstanding Performance Award, Pacific Northwest National Laboratory (2021, 2020)
• Best Presentation Award, AIChE Conference (2018)

• High-capacity, low-temperature, passive NOx and cd adsorbers and methods for making same, US patent #11,071,966

2022

• Chen L., L. Meyer, L. Kovarik, D. Meira, X. Pereira Hernandez, H. Shi, and K. Khivantsev, et al. 2022. "Disordered, Sub-Nanometer Ru Structures on CeO2 are Highly Efficient and Selective Catalysts in Polymer Upcycling by Hydrogenolysis." ACS Catalysis 12, no. 8:4618-4627. PNNL-SA-170085. doi:10.1021/acscatal.2c00684
• Khivantsev K., M.A. Derewinski, and J. Szanyi. 2022. "Novel and emerging concepts related to cationic species in zeolites: characterization, chemistry and catalysis." Microporous and Mesoporous Materials. PNNL-SA-180162. doi:10.1016/j.micromeso.2022.112378
• Khivantsev K., N.R. Jaegers, L. Kovarik, M.A. Derewinski, J. Kwak, and J. Szanyi. 2022. "On the Nature of Extra-Framework Aluminum Species and Improved Catalytic Properties in Steamed Zeolites." Molecules 27, no. 7:Art. No. 2352. PNNL-SA-174113. doi:10.3390/molecules27072352
• Khivantsev K., J. Kwak, N.R. Jaegers, I.Z. Koleva, G. Vayssilov, M.A. Derewinski, and Y. Wang, et al. 2022. "Identification of the mechanism of NO reduction with ammonia (SCR) on zeolite catalysts." Chemical Science 13, no. 35:10383-10394. PNNL-SA-175846. doi:10.1039/D2SC00350C
• Khivantsev K., X. Wei, L. Kovarik, N.R. Jaegers, E.D. Walter, P. Tran, and Y. Wang, et al. 2022. "Palladium/Ferrierite versus Palladium/SSZ-13 Passive NOx Adsorbers: Adsorbate-Controlled Location of Atomically Dispersed Palladium(II) in Ferrierite Determines High Activity and Stability." Angewandte Chemie International Edition 61, no. 3:e202107554. PNNL-SA-170151. doi:10.1002/anie.202107554
• Pham H., A. DelaRiva, E.J. Peterson, R. Alcala, K. Khivantsev, J. Szanyi, and X.S. Li, et al. 2022. "Designing Ceria/Alumina for Efficient Trapping of Platinum Single Atoms." ACS Sustainable Chemistry & Engineering 10, no. 23:7603-7612. PNNL-SA-173717. doi:10.1021/acssuschemeng.2c01380
• Song I., K. Khivantsev, Y. Wang, and J. Szanyi. 2022. "Elucidating the role of CO in NO storage mechanism on Pd/SSZ-13 with in situ DRIFTS." Journal of Physical Chemistry C 126, no. 3:1439-1449. PNNL-SA-168814. doi:10.1021/acs.jpcc.1c10163
• Song I., K. Khivantsev, Y. Wu, M.E. Bowden, Y. Wang, and J. Szanyi. 2022. "Unusual water-assisted NO adsorption over Pd/FER calcined at high temperatures: The effect of cation migration." Applied Catalysis B: Environmental 318. PNNL-SA-172537. doi:10.1016/j.apcatb.2022.121810

2021

• Jiang D., Y. Yao, T. Li, G. Wan, X. Pereira Hernandez, Y. Lu, and J. Tian, et al. 2021. "Tailoring the Local Environment of Platinum in Single-Atom Pt1/CeO2 Catalysts for Robust Low-Temperature CO Oxidation." Angewandte Chemie International Edition 60, no. 50:26054-26062. PNNL-SA-164380. doi:10.1002/anie.202108585
• Khivantsev K., C. Garcia Vargas, J. Tian, L. Kovarik, N.R. Jaegers, J. Szanyi, and Y. Wang. 2021. "Economizing on Precious Metals in Three-Way Catalysts: Thermally Stable and Highly Active Single-Atom Rhodium on Cera for NO Abatement under Dry and Industrially Relevant Conditions." Angewandte Chemie International Edition 60, no. 1:391-398. PNNL-SA-157428. doi:10.1002/anie.202010815
• Khivantsev K., N.R. Jaegers, J. Kwak, J. Szanyi, and L. Kovarik. 2021. "Precise identification and characterization of catalytically active sites on the surface of ?-alumina." Angewandte Chemie International Edition 60, no. 32:17522-17530. PNNL-SA-162118. doi:10.1002/anie.202102106
• Khivantsev K., N.R. Jaegers, L. Kovarik, M. Wang, J.Z. Hu, Y. Wang, and M.A. Derewinski, et al. 2021. "The Superior Hydrothermal Stability of Pd/SSZ-39 in Low Temperature Passive NOx Adsorption (PNA) and Methane Combustion." Applied Catalysis B: Environmental 280. PNNL-SA-151139. doi:10.1016/j.apcatb.2020.119449
• Kim Y., G.B. Collinge, M. Lee, K. Khivantsev, S. Cho, V. Glezakou, and R.J. Rousseau, et al. 2021. "Surface Density Dependent Catalytic Activity of Single Palladium Atoms Supported on Ceria." Angewandte Chemie International Edition 60, no. 42:22769-22775. PNNL-SA-159438. doi:10.1002/anie.202105750

2020

• Khivantsev K., N.R. Jaegers, I.Z. Koleva, H.A. Aleksandrov, L. Kovarik, M.H. Engelhard, and F. Gao, et al. 2020. "Stabilization of Super Electrophilic Pd+2 Cations in Small-Pore SSZ-13 Zeolite." Journal of Physical Chemistry C 124, no. 1:309-321. PNNL-SA-148282. doi:10.1021/acs.jpcc.9b06760
• Khivantsev K., N.R. Jaegers, L. Kovarik, J.Z. Hu, F. Gao, Y. Wang, and J. Szanyi. 2020. "Palladium/Zeolite Low Temperature Passive NOx Adsorbers (PNA): Structure-Adsorption Property Relationships for Hydrothermally Aged PNA Materials." Emission Control Science and Technology 6. PNNL-SA-141069. doi:10.1007/s40825-019-00139-w

2019

• Jaegers N.R., K. Khivantsev, L. Kovarik, D.W. Klas, J.Z. Hu, Y. Wang, and J. Szanyi. 2019. "Catalytic activation of ethylene C-H bonds on uniform d8 Ir(I) and Ni(II) cations in zeolites: toward molecular level understanding of ethylene polymerization on heterogeneous catalysts." Catalysis Science & Technology 9, no. 23:6570-6576. PNNL-SA-148436. doi:10.1039/C9CY01442J
• Khivantsev K., N.R. Jaegers, L. Kovarik, S. Prodinger, M.A. Derewinski, Y. Wang, and F. Gao, et al. 2019. "Palladium/Beta Zeolite Passive NOx Adsorbers (PNA): Clarification of PNA Chemistry and the Effects of CO and Zeolite Crystallite Size on PNA Performance." Applied Catalysis A: General 569. PNNL-SA-137831. doi:10.1016/j.apcata.2018.10.021

2018

• Khivantsev K., F. Gao, L. Kovarik, Y. Wang, and J. Szanyi. 2018. "Molecular Level Understanding of How Oxygen and Carbon Monoxide Improve NOx Storage in Palladium/SSZ-13 Passive NOx Adsorbers: The Role of NO+ and Pd(II)(CO)(NO) Species." Journal of Physical Chemistry C 122, no. 20:10820-10827. PNNL-SA-131978. doi:10.1021/acs.jpcc.8b01007
• Khivantsev K., N.R. Jaegers, L. Kovarik, J.C. Hanson, F. Tao, Y. Tang, and X. Zhang, et al. 2018. "Achieving Atomic Dispersion of Highly Loaded Transition Metals in Small-pore Zeolite SSZ-13: High-capacity and High-efficiency Low Temperature CO and Passive NOx Adsorbers." Angewandte Chemie International Edition 57, no. 51:16672-16677. PNNL-SA-136340. doi:10.1002/anie.201809343