In the context of the research of low cost and environmentally benign catalytic systems, development of highly active and selective catalysts is of prime importance. From an industrial point of view, heterogeneous processes are advantageous because of the facile separation of the final products from the catalysts and the easy recycling of these catalysts. Moreover, the easier solid–liquid separation reduces the solvent consumption, which is in agreement with the constant demand for greener chemical processes. In the case of homogeneous catalysts, every entity can act as a single active site. This makes homogeneous catalysts more active and selective compared to heterogeneous catalysts. Therefore, a catalytic system, which takes the advantages of both homogeneous and heterogeneous catalysis, would greatly enhance the interest for industrial applications. One possibility to achieve this type of catalytic system is the use of supported catalysts.<br/>Among the metals applied within the field of supported catalysis, rare-earth systems have been the subject of constant interest due to their high activity in several fields, such as in polymerization and fine chemistry. In this oral presentation we would like demonstrated through a theoretical/experimental approach that support effects can be used to change the stereochemical outcome of different polymerization reactions. Thus, we will try to shed light on the origin of the influence of catalyst grafting in different selective processes such as the β-butyrolactone ring opening polymerization or the olefin and diene homopolymerization mediated by supported lanthanide catalysts.<br/>

Supported lanthanide catalysts: Role of the grafting on the stereochemical outcome of different polymerization reactions

253rd National Meeting (2017)

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