Complex pathways in dissociative adsorption of oxygen on platinum

Article Abstract:

Research indicates that the chemisorption process of oxygen on platinum might be far more complex than implied by the Languir model. The use of a scanning tunnelling microscope shows that previously dissociated chemisorbed species in the area affect an oxygen molecule's dissociation probability. The adsorption mechanism has a dynamic heterogeneity which makes the adsorbate ordering kinetically limited. The kinetics of catalytic reactions carried out at high pressures and temperatures for industrial heterogeneous catalysis are probably also affected by this effect.

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A titanosilicate molecular sieve with adjustable pores for size-selective adsorption of molecules

Article Abstract:

Research is presented describing the study of molecule adsorption using a pre-selected size gas mixture to create a gate effect on a titanosilicate molecular sieve.

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Geometry-dominated fluid adsorption on sculpted solid substrates

Article Abstract:

A model relating to shape variations in solid substrates and the impact on liquid adsorption is examined in detail.

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