Chemical and Biomolecular Engineering
Theodore Vermeulen Professor
University of California, Berkeley
LELAND LECTURE: The Curious Matter of C1 Chemistry
Thursday, March 30, 2017
to 6:00 PM
Sadie R. Smith Auditorium Herzstein Hall
6100 Main St
Houston, Texas, USA
The recurring need for advantaged feedstocks as precursors to chemicals and fuels brings us once more to scientific and engineering matters related to the conversion of molecules that lack any C-C bonds, such as methane, methanol, dimethyl ether, and CO. Such C1 species, and especially methane, impose thermodynamic and kinetic challenges of significant consequence for the complexity and cost of the required chemical transformations. This lecture seeks to chart a roadmap and to assemble some unifying concepts in order to guide our search for attractive C1 conversion strategies and, in doing so, to define the boundaries of what is reasonable and practical. These concepts are underpinned by the thermodynamics of the relevant transformations and by the formalism of transition state theory in describing the dynamics of chemical reactions. The paths are shaped by: (i) the inherent thermodynamic hurdles and the impotence of catalysis in surmounting them; (ii) the pre-eminence of process simplicity and inexpensive oxidants over alluring direct conversion schemes; (iii) the conceptual framework of kinetic and thermodynamic protection of intermediate species; (iv) the coupling of reactions with separations and of distinct catalytic functions within kinetic cascades; (v) the prevalence of kinetic bottlenecks in forming the first C-C bond from C1 molecules; and (vi) the emergence of a C2 conversion platform, as we overcome (or come to accept) the inherent limits in catalytic C1 chemistries. The conclusions are sobering, as the magnitude of the formidable challenges so warrants. The roadmap is drawn using our chemical engineering toolbox, which proves essential as we seek the small openings that Nature leaves in matters of C1 chemistry.
Biography of Enrique Iglesia:
Dr. Iglesia is the Theodore Vermeulen Chair in Chemical Engineering at the
University of California at Berkeley, a Faculty Senior Scientist at the Lawrence
Berkeley National Laboratory, and the Director of the Berkeley Catalysis Laboratory.
He received a B.S. from Princeton University (1977) and a Ph.D. from
Stanford University (1982). He joined Berkeley in 1993 after twelve years in
research and management at the Corporate Research Labs of Exxon. He has
served as Editor-in-Chief of Journal of Catalysis (1997–2010); he serves as
President of the North American Catalysis Society and as Vice President and
President-Elect of the International Association of Catalysis Society. He has
been elected to the National Academy of Engineering, the American Academy
of Arts and Sciences, and the National Academy of Inventors. He is a Fellow of
the American Chemical Society and the American Institute of Chemical Engineers
and an Honorary Fellow of the Chinese Chemical Society.