Heterogeneous catalysis, solid state NMR, zeolite, solid electrolyte, battery

1. Elucidating fine structures of active sites in zeolite catalysts and investigating fundamental catalytic mechanisms in zeolite-based catalysis, primarily via NMR

2. Fundamental research on solid-state electrolytes

3. Solid-state NMR method development and its application on material sciences

1. Liang, L.; Ji, Y.; Chen, K.; Gao, P.; Zhao, Z.; Hou, G., Solid-State NMR Dipolar and Chemical Shift Anisotropy Recoupling Techniques for Structural and Dynamical Studies in Biological Systems. Chem. Rev. 2022, 122 (10), 9880-9942

2. Zhao, Z.; Xiao, D.; Chen, K.; Wang, R.; Liang, L.; Liu, Z.; Hung, I.; Gan, Z.; Hou, G. Nature of Five-Coordinated Al in γ-Al2O3 Revealed by Ultra-High-Field Solid-State NMR. ACS Central Science 2022, 8 (6), 795-803.

3. Wang, R.; Zhao, Z.; Gao, P.; Chen, K.; Gan, Z.; Fu, Q.; Hou, G. Impact of Adsorption Configurations on Alcohol Dehydration over Alumina Catalysts. The Journal of Physical Chemistry C 2022, 126 (24), 10073-10080.

4. Ji, Y.; Gao, P.; Zhao, Z.; Xiao, D.; Han, Q.; Chen, H.; Gong, K.; Chen, K.; Han, X.; Bao, X.; et al. Oxygenate-based routes regulate syngas conversion over oxide–zeolite bifunctional catalysts. Nature Catalysis 2022, 5 (7), 594-604.

5. Du, J.-H.; Chen, L.; Zhang, B.; Chen, K.; Wang, M.; Wang, Y.; Hung, I.; Gan, Z.; Wu, X.-P.; Gong, X.-Q.; et al. Identification of CO2 adsorption sites on MgO nanosheets by solid-state nuclear magnetic resonance spectroscopy. Nature Communications 2022, 13 (1), 707.

6. Chen, K.; Zornes, A.; Nguyen, V.; Wang, B.; Gan, Z.; Crossley, S. P.; White, J. L. 17O Labeling Reveals Paired Active Sites in Zeolite Catalysts. Journal of the American Chemical Society 2022, 144 (37), 16916-16929.

7. Dorn, R. W.; Heintz, P. M.; Hung, I.; Chen, K.; Oh, J.-S.; Kim, T.-H.; Zhou, L.; Gan, Z.; Huang, W.; Rossini, A. J. Atomic-Level Structure of Mesoporous Hexagonal Boron Nitride Determined by High-Resolution Solid-State Multinuclear Magnetic Resonance Spectroscopy and Density Functional Theory Calculations. Chem. Mater. 2022, 34 (4), 1649-1665.

8. Chen, K.; Zornes, A.; Bababrik, R.; Crouch, J.; Alvarez, W.; Wulfers, M.; Resasco, D.; Wang, B.; Crossley, S.; White, J. L., First-Formed Framework Species and Phosphate Structure Distributions in Phosphorus-Modified MFI Zeolites. The Journal of Physical Chemistry C 2022, 126 (1), 227-238.

9. Han, Q.; Gao, P.; Liang, L.; Chen, K.; Dong, A.; Liu, Z.; Han, X.; Fu, Q.; Hou, G., Unraveling the Surface Hydroxyl Network on In2O3 Nanoparticles with High-Field Ultrafast Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy. Anal. Chem. 2021, 93 (50), 16769-16778.

10. Wang, Z.; Chen, K.; Jiang, Y.; Trébosc, J.; Yang, W.; Amoureux, J.-P.; Hung, I.; Gan, Z.; Baiker, A.; Lafon, O.; Huang, J., Revealing Br?nsted Acidic Bridging SiOHAl Groups on Amorphous Silica–Alumina by Ultrahigh Field Solid-State NMR. The Journal of Physical Chemistry Letters 2021, 12 (47), 11563-11572.

11. Chen, K.*; Gan, Z.; Horstmeier, S.; White, J. L.*, Distribution of Aluminum Species in Zeolite Catalysts: 27Al NMR of Framework, Partially-Coordinated Framework, and Non-Framework Moieties J. Am. Chem. Soc. 2021, 143, 6669-6689

12. ?pa?ková, J.; Fabra, C.; Mittelette, S.; Gaillard, E.; Chen, C.; Cazals, G.; Lebrun, A.; Sene, S.; Berthomieu, D.; Chen, K.; Gan, Z.; Gervais, C.; Metro, T.; Laurencin, D.* Unveiling the structure and reactivity of fatty-acid based (nano)materials thanks to efficient and scalable 17O and 18O-isotopic labeling schemes J. Am. Chem. Soc. 2020, 142, 21068-21081

13. Chen, K.*, A Practical Review of NMR Lineshapes for Spin-1/2 and Quadrupolar Nuclei in Disordered Materials Int. J. Mol. Sci. 2020, 21, 5666, invited review

14. VMartins, V.; Xu, J.; Wang, X.; Chen, K.; Hung, I.; Gan, Z.*; Gervais, C.; Bonhomme, C.*; Zheng, A.; Lucier, B.; and Huang, Y.*, Higher Magnetic Fields, Finer MOF Structural Information: 17O Solid-State NMR at 35.2 T 2020, 142, 14877–14889

15. Chen, K.*; Horstmeier, S.; Nguyen, V. Wang, B.; Crossley, S.; Pham, T.: Gan, Z.; Hung, I.; White, J. L.*, Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T J. Am. Chem. Soc. 2020, 142, 7514-7523

16. Madsen, R.; Qiao, A.; Sen, J.; Hung, I.; Chen, K.; Gan, Z.; Sen, S.*; Yue, Y.*, Ultrahigh-field 67Zn NMR reveals short-range disorder in zeolitic imidazolate framework glasses Science 2020, 367, 1473-1476

17. Chen, C.; Gaillard, E.; Mentink, F.; Chen. K.; Gan, Z.; Gaveau, P.; Rebiere. B.; Berthelot, R.; Florian, P.; Bonhomme, C.; Smith, M.; Metro, T.; Alonso, B.; Laurencin, D., Direct 17O-Isotopic Labeling of Oxides Using Mechanochemistry Inorganic Chemistry 2020, https://doi.org/10.1021/acs.inorgchem.0c00208

18. Shen, Li.; Wang, Y.; Du, J.; Chen, K.; Lin, Z.; Wen, Y.; Hung, I.; Gan, Z.; and Peng, L.*, Probing the Interaction of Gamma Alumina with Water via Multinuclear Solid State NMR Spectroscopy, ChemCatChem 2020, 6, 1569-1574

19. Mayen, L.; Jensen, N. D.; Laurencin, D.; Marsan, O.; Bonhomme, C.; Gervais, C.; Smith, M. E.; Coelho, C.; Laurent, G.; Trebosc, J.; Gan, Z.; Chen, K.; Rey, C.; Combes, C.; Soulié, J., A soft-chemistry approach to the synthesis of amorphous calcium ortho/pyrophosphate biomaterials of tunable composition Acta Biomaterialia 2019, 103, 333-345.

20. Chen, K.; Abdolrhamani, M.; Sarah, H.; Pham, T.; Nguyen, V.; Zeets, M.; Wang, B.; Crossley, S.; White, J. L.*, Bronsted–Br?nsted Synergies between Framework and Noncrystalline Protons in Zeolite H-ZSM-5 ACS Catalysis 2019, 9, 6124-6136

21. Abdolrhamani, M.; Chen, K.; White, J. L.*, Assessment, Control and Impact of Br?nsted Acid Site Heterogeneity in Zeolite HZSM-5 J. Phys. Chem. C 2018, 122, 15520-15528

22. Chen, K.; Abdolrhamani, M.; Freeman, J; Ward, G; Sheets, E; White, J. L.*, Direct Detection of Multiple Acidic Proton Sites in Zeolite HZSM-5 J. Am. Chem. Soc. 2017, 139, 18698-18704

23. Chen, K.; Gumidyala, A.; Abdolrhamani, M.; Villines, C; Crossley, S.; White, J. L.*, Trace Water Amounts can Increase Benzene H/D Exchange Rates in an Acidic Zeolite Journal of Catalysis 2017, 351, 130-135

24. Chen, K.; Kelsey, J.; Zhang, L.; Resasco, D.; White, J. L.*, Water Interactions in Zeolite Catalysts and Their Hydrophobically Modified Analogues ACS Catalysis 2015, 5, 7480-7487

25. Zhang, L.; Chen, K.; Chen, B.; White, J. L.; Resasco, D. E.*, Factors that Determine Zeolite Stability in Hot Liquid Water J. Am. Chem. Soc. 2015, 137, 11810-11819

26. Chen, K.; Damron, J.; Pearson, C.; Resasco, D.; Zhang, L.; White, J. L.*, Zeolite Catalysis: Water Can Dramatically Increase or Suppress Alkane C-H Bond Activation ACS Catalysis 2014, 4, 3039-3044