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4911713 
Journal Article 
MANGANESE PORPHYRINS ADSORBED OR INTERCALATED IN DIFFERENT MINERAL MATRICES - PREPARATION AND COMPARED PROPERTIES AS CATALYSTS FOR ALKENE AND ALKANE OXIDATION 
Barloy, L; Lallier, JP; Battioni, P; Mansuy, D; Piffard, Y; Tournoux, M; Valim, JB; Jones, W 
1992 
1 
New Journal of Chemistry
ISSN: 1144-0546
EISSN: 1369-9261 
MATERIALS SCIENCE FORUM 
16 
1-2 
71-80 
WOS:A1992HL79300010 
Various supported Mn(III)-porphyrins were prepared either by adsorption of tetracationic Mn-porphyrins on silica or of tetraanionic Mn-Porphyrins on alumina, or by ion-exchange of these Mn-porphyrins with the layered minerals, montmorillonite, phosphatoantimonic acids and layered dihydroxides. The former catalysts involved a Mn(III)-porphyrin simply adsorbed onto the mineral surface by strong ionic interactions and were stable for days, without release of their Mn-porphyrin, in CH2Cl2 and CH3CN. In the latter supported catalysts, the Mn(III)-porphyrin was exchanged with interlayer ions (with a particularly strong interaction between the Mn-porphyrin and montmorillonite) and these catalysts were even stable in CH3OH and H2O. Some of these compounds were very good catalysts for cyclooctene epoxidation and alkane hydroxylation by PhlO. Mn(III)[tetrakis-(4-N-methylpyridiniumyl)porphyrin] supported on silica and on montmorillonite were particularly efficient catalysts for alkane hydroxylation and much better than the starting Mn-porphyrin for the hydroxylation of the poorly reactive heptane and pentane. In addition, the catalyst supported on montmorillonite exhibited a marked shape selectivity in favor of small linear alkanes like pentane when compared to the bulky substrate adamantane. 
SUPPORTED CATALYSTS; BIOMIMETISM; LAYERED MINERALS; CLAY; SHAPE SELECTIVITY 
CONARD, J