Figure 1.

Porosity assessment for γ-Al₂O₃ support materials. (a) Pore size distributions as derived by Hg intrusion porosimetry for the series of γ-Al₂O₃ support materials. (b,c) Representative SEM micrographs for microparticles of AOm(11) and AOm(24), respectively, showing no signs of macropores on their outer surface; (d,e) Representative scanning electron micrographs for microparticles of AOmM showing the percolation of macropores to the outer surface. (f) Cross-sectional SEM micrograph after focus-ion-beam (FIB) milling of the resin-embedded AOmM support. Lighter gray regions correspond to mesoporous Al₂O₃ regions, while dark gray patches correspond to macropores cross sections. (g) 3D-rendered view of a reconstructed FIB-SEM tomogram for AOmM. Purple regions correspond to mesoporous Al₂O₃ and white regions to intraparticle macropores.