Biomimetic oxidizing catalysts

Metalloporphyrinosilicas as a new class of hybrid organic-inorganic materials were prepared by polymerization of 3- er -butyl-5-vinylsalicylaldehyde with styrene and divinylbenzene and used as selective biomimetic oxidation catalyst.27 Synthesis and structural characterization of rare-earth bisfdimethyl-silyl)amides and their surface organometallic chemistry on mesoporous silicate MCM-41 have been reported.28... 

CoSalen Y carries oxygen as a cargo.72 The catalytic properties of the zeolite-encapsulated metal complexes depend mainly on the complexed metal atoms, which are used usually as oxidation catalysts but other applications are also beginning to emerge. The zeolite-encapsulated catalysts can be regarded as biomimetic oxidation catalysts.73 In liquid-phase oxidation reactions catalyzed... 

The intercalated catalysts can often be regarded as biomimetic oxidation catalysts. The intercalation of cationic metal complexes in the interlamellar space of clays often leads to increased catalytic activity and selectivity, due to the limited orientations by which the molecules are forced to accommodate themselves between sheets. The clays have electrostatic fields in their interlayer therefore, the intercalated metal complexes are more positively charged. Such complexes may show different behavior. For example, cationic Rh complexes catalyze the regioselective hydrogenation of carbonyl groups, whereas neutral complexes are not active.149 Cis-Alkenes are hydrogenated preferentially on bipyridyl-Pd(II) acetate intercalated in montmorillonite.150 The same catalyst was also used for the reduction of nitrobenzene.151... 

F. Bedioui, Zeolite-encapsulated and Clay-intercalated Metal Porphyrin, Phthalocyanine and Schiff-base Complexes as Models for Biomimetic Oxidation Catalysts an Overview. Coord. Chem. Rev., 1995, 144, 39—68. 

Biomimetic oxidation catalysts supported on inorganic matrices. 

Raman spectroscopy fingerprinting active intermediates from metalloproteins to biomimetic oxidation catalysts... 

Zeolites are crystalline alumina-silica-based open anionic framework structures with uniformly sized, rigid pores and channels. Incorporation of porphyrins into zeolites has been explored as means to biomimetic oxidation catalysts. " The initial efforts to combine porphyrins with zeolites resulted in materials in which the porphyrins were supported on the external zeolite surfaces rather than encapsulated inside the pores. The first of this type of material was reported by Bedioui and coworkers which the... 

Bedioui, F. (1995). Zeohte-encapsulated and clay-intercalated metal porphyrin, phthalocyanine and Schiff-base complexes as models for biomimetic oxidation catalysts—an overview. Coord. Chem. Rev. 144, 39-68. 

Battioni P., Cardin E., Louloudi M., Schollhom B., Spyroulias G.A., Mansuy D., Traylor T.G. Metalloporphyrinosilicas A new class of hybrid organic-inorganic materials acting as selective biomimetic oxidation catalysts. Chem. Commun. 1996 2037-2038 Benson B.C., Jackson R., Joshi K.K., Thompson D.T. A new method for preparation of mixed metal complexes. Chem. Commim. 1968 1506-1508... 

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