“…However, reduced catalytic activity, slower reaction rates, transport limitations, and lack of accessibility of the active sites are commonly encountered problems. A variety of solid supports, mostly microporous, such as silica, [2] molecular sieves, [3] polystyrene, [4] Merrifield peptide resins, [5] counter-charged supports, [6] polydimethylsiloxane membranes, [7] or xerogels [8] have been used in the past for immobilization of porphyrins. We became interested in combining the advantages of efficient homogeneous metalloporphyrin catalysis with the unique properties of mesoporous aerogel materials, mainly the high porosity and high surface area.…”