Edu H eterogeneous catalytic processes form the basis for much of the chemical and petroleum processing industries.
Solid catalysts enable reactions to occur at sufficiently high rates to be commercially feasible.
In many cases, proper selection of a suitable catalyst also permits reaction pathways and product selectivities to occur that would not be kinetically possible in the absence of the catalyst. In our laboratory, we employ kinetic measurements of selected reactions, in combination with a variety of optical and surface spectroscopic and physical characterization techniques, to investigate the surface properties and detailed modes of operation of zeolites, metal oxides and supported metal catalysts. Among the more challenging problems in the field of heterogeneous catalysis is that of selectively oxidizing small alkanes to higher hydrocarbons and oxygenates in high yields. We are currently investigating, for example, the catalyzed oxidative coupling of methane to C 2 hydrocarbon products. The resulting methyl radicals then emanate into the gas phase where they either undergo coupling to the desired C 2 products or enter into a series of chain branching homogeneous reactions that lead to the formation of undesired CO x products.