| Professor Gellman’s group uses a wide
variety of experimental techniques to study
processes occurring on surfaces. Much of
the work involves the use of ultrahigh vacuum
methods to study the bonding of molecules
to metal surfaces, surface structure, reaction
kinetics, friction, lubrication, etc.
The use of surface science methods to create
and study well-defined catalytic surfaces
allows us to investigate problems in heterogeneous
catalysis at the most fundamental level.
One current project is aimed at understanding
the nature of the transition state for elementary
processes important in the conversion of
chlorofluorocarbons to hydrofluorocarbons.
A second is aimed at understanding the properties
of chiral surfaces used for enantioselective
heterogeneous catalysis.
Surface science methods are having an
important impact in the field of tribology,
the study of the mechanical properties of
surfaces such as friction, adhesion, and
lubrication. A unique apparatus has been
developed for study of the frictional properties
of single crystalline metal surfaces under
highly controlled conditions. Recent work
has focused on the tribological properties
of quasicrystalline alloys such as Al70Pd21Mn9. |
|
Horvath, J.D., Gellman, A.J. "Desorption
of Chiral Compounds from Chiral Cu(643)
and Achiral Cu(111) Surfaces," J. Amer.
Chem. Soc. 124(10), (2002), 2384-2392.
Buelow, M.T., Immaraporn, B., Gellman,
A.J. "The Transition State for Metal
Catalyzed Dehalogenation: C-I Bond Cleavage
on Pd(111)," J. Catal. 203, (2001),
41-50.
Paserba, K.R., Gellman, A.J. "Effects
of Conformational Isomerism on the Desorption
Kinetics of n-Alkanes from Graphite,"
J. Chem. Phys. 115(14), (2001), 6737-6751.
Gellman, A.J., Ko, J.S. "The Current
Status of Tribological Surface Science,"
Trib. Lett. 10(1-2), (2001), 39-44.
Gellman, A.J. "Transition States for
Surface-Catalyzed Chemistry, " Acc.
Chem. Res. 33, (2000), 19-26. |
