11/12/19 - 9:45 AM to 11:00 AM
Department Seminar: Mark D. Allendorf, Ph.D.
Nanopores, Nanoparticles, and “Molecular Hydrides” for Hydrogen Production, Transport, and Storage
The development of a hydrogen economy has potentially immense benefits for addressing the crisis of global heating. However, decades of research on the two main categories of storage materials—sorbents and metal hydrides—have left us empty-handed: no materials to date can meet DOE targets for vehicular storage. Moreover, it is clear that new materials are also required to efficiently transport hydrogen from production sites to fueling stations and for carbon-neutral, economic hydrogen production. This presentation will describe recent research carried out by the Hydrogen Materials—Advanced Research Consortium (HyMARC), a team of seven DOE national laboratories assembled to tackle scientific roadblocks to discovery of game-changing materials needed to realize a sustainable hydrogen economy.
I will focus on three topics, each of which illustrates the combination of innovative synthesis, computational modeling, and state-of-the-art characterization tools available in HyMARC. 1) Synthesis of “molecular” metal hydrides within a non-innocent Metal-Organic Framework (MOF) host; is this the ultimate limit for nanoscale hydrides? 2) The “inside-outs” of hydrogen release from complex metal hydride nanoclusters, in including Scanning Transmission X-ray Microscopy images revealing a surprising core-shell phase structure formed during dehydrogenation. 3) Versatile MOF catalysts for hydrogenolysis of aryl ethers, H2 release from alcohols proposed as high-density hydrogen carriers and MOF-catalyzed aldol condensation to produce C4 – C8 olefins, which can serve as precursors to distillates. Together, these results demonstrate that we are far from the end of the road when it comes to exciting chemistry to address the transportation-related materials challenges confronting society today.
Mark D. Allendorf, Ph.D., is co-director of the Hydrogen Advanced Materials Research Consortium (HyMARC) and a senior scientist at Sandia National Laboratories in Livermore, CA. He earned his bachelor’s degree in chemistry from Washington University in St. Louis, and his doctorate in inorganic chemistry from Stanford University.
At Sandia, his research focuses on the fundamental science and applications of metal-organic frameworks (MOFs) and on hydrogen storage. Current interests include metal hydrides and MOFs for hydrogen storage, chemical and radiation sensing, gas separations, MOFs for electronic devices, and catalysts for biofuels production. He is President Emeritus and Fellow of The Electrochemical Society and has received awards for research, leadership, and teamwork, including a 2014 R&D100 Award for a novel approach to radiation detection.