The surface science of titanium dioxide

Photoinduced reactivity of titanium dioxide

Catalysts based on single atoms of scarce precious metals can lead to more efficient use through enhanced reactivity and selectivity. However, single atoms on catalyst supports can be mobile and aggregate into nanoparticles when heated at elevated temperatures. High temperatures are detrimental to catalyst performance unless these mobile atoms can be trapped. We used ceria powders having similar surface areas but different exposed surface facets. When mixed with a platinum/aluminum oxide catalyst and aged in air at 800°C, the platinum transferred to the ceria and was trapped. Polyhedral ceria and nanorods were more effective than ceria cubes at anchoring the platinum. Performing synthesis at high temperatures ensures that only the most stable binding sites are occupied, yielding a sinter-resistant, atomically dispersed catalyst.

Thermally stable single-atom platinum-on-ceria catalysts via atom trapping

The nature and action of metal catalysts on solid supports, especially from the standpoint of industrial processes, were the subjects of a symposium held in Miami Beach in 1985. The typescripts of 21 papers, together with an 8-page index, make up this volume.

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Strong metal-support interactions

Although technological practice should minimize environmental impact, this is not always economically feasible. During the past decade, for example, there has been increasing global concern over th...

CO2 Reforming of CH4

Metal-support effects on the activity and selectivity of Ni catalysts in COH2 synthesis reactions

Electron microscopy of supported metal particles: I. Behavior of Pt on titanium oxide, aluminum oxide, silicon oxide, and carbon

Electron microscopy of supported metal particles II. Further studies of Pt/TiO

Surface area stabilization of IrAl2O3 catalysts by CaO, SrO, and BaO under oxygen atmospheres: Implications on the mechanism of catalyst sintering and redispersion

R.L. Garten

Papers

Metal-support effects on the activity and selectivity of Ni catalysts in COH2 synthesis reactions

Electron microscopy of supported metal particles: I. Behavior of Pt on titanium oxide, aluminum oxide, silicon oxide, and carbon

Electron microscopy of supported metal particles II. Further studies of Pt/TiO

Surface area stabilization of IrAl2O3 catalysts by CaO, SrO, and BaO under oxygen atmospheres: Implications on the mechanism of catalyst sintering and redispersion

The chemical state of iron in reduced PdFeAl2O3 catalysts