Transport properties and size exclusion effects in wide-pore superficially porous particles

•Size exclusion significant when molecule-sol size ratio increased from 0.025 to 0.1.•Size exclusion effects include correlation between concentration and void fraction.•Convection dominates near the hull for larger molecules with small diffusion rates.•Flux well predicted by molecular diffusion rate deeper within SPP.•Time scale for molecular first passage to given depth well predicted by diffusion.•Intraparticle age not as well predicted by diffusion.•Intraparticle age distribution dominated by young molecules near the hull.•Cumulative residence time characterized by multiple short visits to first sol layer.