Abstract
Abstract This study provides a straightforward demonstration of the influence of surface curvature effects in catalysis by mesoporous materials and allows showing that geometry-dependent contributions dominate catalytic processes over all other factors. For the model reaction selected, isomerization of 1-hexene, the differences in activity observed for the fresh catalysts with pore diameters in the range 2.3 nm – 9.3 nm are nicely accounted for by the differences in the heats of physisorption measured over non-acidic analogous mesoporous materials. The influence of pore filling has also been investigated and the very first inversion of selectivity for a precise pore size catalyst 4.6 nm is demonstrated.
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