Abstract：

Conventional energy production is growing fast to meet the rising demand. Meanwhile, concerns over global warming and the international effort to curtail CO2 emissions are intensifying the search for alternative technologies such as CO2 capture, storage and reuse, and the production of low carbon fuels. In this talk, we will discuss a promising technology based on using intermediate temperature dense ceramic membranes for oxygen production and oxy-combustion, and new developments for hydrogen production via water splitting. Extensions to CO2 splitting and syngas production will also be demonstrated. We will review fundamentals of materials for ion-transport membranes, their oxygen transport mechanism and a framework to model their interactions with the gas phase. Experimental results show the effectiveness of perovskites in these multiple applications, and how to structure the membrane for enhanced oxygen permeation, hydrogen production, etc. Flux models that incorporate surface chemistry and charged species transport are used to guide the design of monolith reactors and explore their integration with power or fuel production systems. New applications including the production of chemicals are discussed. Optimal reactor designs must consider the coupled gas phase and surface interactions for various applications.

Brief Biography：

Ahmed F. Ghoniem is the Ronald C. Crane Professor of Mechanical Engineering at MIT, and director of the Center for Energy and Propulsion Research and the Reacting Gas Dynamics Laboratory. He received his B.Sc. and M.Sc. degree from Cairo University, and Ph.D. at the University of California, Berkeley.  His research covers computational engineering, clean energy with focus on CO₂ capture technologies, renewable energy and alternative fuels. He made fundamental contributions to multiscale simulations, thermochemistry and combustion, energy systems and materials chemistry.  He supervised more than 100 M.Sc., Ph.D. and post-doctoral students, published more than 500 refereed articles in leading journals and conferences, lectured extensively around the World, and consulted for the aerospace, automotive and energy industry. Ghoniem is Fellow of ASME and APS, and associate fellow of AIAA.  He received several awards including the ASME James Harry Potter Award in Thermodynamics, the AIAA Propellant and Combustion Award, and the KAUST Investigator Award.