Surface organometallic chemistry 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... 

The reaction of organometallics with metal surfaces is a very promising aspect of surface organometallic chemistry related to fine chemicals. The precise understanding of the reactions between organometallics and metal surfaces is essential to obtain highly selective catalysts by this route.292,293... 

Surface Organometallic Chemistry as a Tool for Tailor-Made Catalysts... 

Heterogeneous Catalysts Prepared via Surface Organometallic Chemistry... 

J. R Candy, B. Didillon, E. L. Smith, T. M. Shay, and J. M. Basset, Surface organometallic chemistry on metals A novel and effective route to custom-designed bimetallic catalysts, J. Mol. Catal. 86, 179-204 (1994). 

This is a major achievement, mainly due to Basset and his group, in surface organometallic chemistry because it has been thus possible to prepare single site catalysts for various known or new catalytic reactions [53] such as metathesis of olefins [54], polymerization of olefins [55], alkane metathesis [56], coupHng of methane to ethane and hydrogen [57], cleavage of alkanes by methane [58], hydrogenolysis of polyolefins [59] and alkanes [60], direct transformation of ethylene into propylene [61], etc. These topics are considered in detail in subsequent chapters. 

Preparation of Single Site Catalysts on Oxides and Metals Prepared via Surface Organometallic Chemistry... 

It must thus be possible to transpose the concepts of modern molecular chemistry to design heterogeneous catalysts and especially the single sites that are necessary to obtain higher activities, better selectivihes, higher life times and, eventually, discover new catalytic reactions. This will be developed in the next chapter, based on catalysis by surface organometallic chemistry. 

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