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Graduate Student Speaker Series - Dr. Alexander Neimark
3:00 pm - 4:00 pm
Location: CPE 2.216
Dr. Alexander Neimark, Distinguished Professor of Chemical and Biochemical Engineering at Rutgers University, and Leverhulme Visiting Professor at University College of London, will be presenting on "Multiscale Poromechanics of Nanoporous Adsorbents".
Abstract:
Deformation of nanoporous materials in the process of gas adsorption is currently actively explored with respect to the design of novel flexible adsorbents and membranes for hydrocarbon separation, actuators, nanobumpers, energy storage devices, as well as oil and gas recovery from shales and carbon dioxide sequestration in coal mines. The key question, which has not been consistently addressed in the literature, is how adsorption in nanopores affects material deformation and adsorbate transport on the macroscopic level and, vice versa, how the alteration of nanoporosity due to matrix deformation under confining stress affects the sorption capacity and selectivity. This topic represents a fundamental interdisciplinary problem solution of which requires incorporation of the methods of classical poromechanics, widely used in geoscience for measuring and modeling coupled fluid flow and deformation in macroscopic porous media, into adsorption thermodynamics and molecular simulations of adsorption equilibrium on the nanoscale level. I will present a unified theoretical approach that extends the Gibbs excess adsorption thermodynamics to poroelastic nanomaterials. Special attention is paid to interpretation of the strain measurements by in situ SAXS/SANS and dilatometry. Examples include carbons, silicas, MOFs, and zeolites.
About Dr. Neimark:
Dr. Alexander V. Neimark is a Distinguished Professor of Chemical and Biochemical Engineering at Rutgers University. He received his Doctor of Science degree at the Moscow State University and worked at Department of Adsorption the Institute of Physical Chemistry of Russian Academy of Sciences. After receiving Humboldt fellowship in 1992, he worked at Mainz University (Germany) and then held visiting positions at CNRS (France), and Yale University (USA). Prior to joining Rutgers in 2006, he served as Research Director of the Center for Modeling and Characterization of Nanoporous Materials at TRI/Princeton in 1996-2006. He is a recipient of many national and international awards and honored appointments, including Guggenheim Fellow, Blaise Pascal International Chair, Humboldt Fellow, Fellow of American Institute of Chemical Engineers, Fellow of International Adsorption Society, Distinguished Visiting Fellow of the Royal Academy of Engineering, and Leverhulme Professorship.
Dr. Neimark research interests include thermodynamics, statistical mechanics, and molecular modeling of adsorption, transport, and interfacial phenomena in nanoporous and self-assembled nanostructured materials. He published 260+ scientific papers, named a highly cited scientist by ICI, with ~20,000 citations, Hirsch index h=65.