Bingjun Xu, University of Delaware
Abstract: Heterogeneous catalysis is one of the pillars of the energy and
chemical industries, and a central science in driving the
accelerating transition to a carbon neutral future.
Understanding catalytic processes mediated by solid surfaces
on the molecular level holds the key to catalyst design, but is
challenging due to the complexity of the local environment in
which chemical transformations occur. In this lecture,
encapsulation of metal nanoparticles in zeolite crystals as an
effective catalyst architecture to mediate selective tandem
upgrading of biomass derived feedstocks is discussed in the
context of two case studies. The sequence to which substrates
are exposed to different active sites and the distribution of
metal and acid sites in zeolite crystals are shown to play decisive roles in determining selectivity
and stability of catalysts.