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HY-SILP FUNDED PROJECTS 3.11 HY-SILP – Entwicklung von neuartigen, ressourcenschonenden HYdroformy- lierungstechnologien unter Einsatz von Supported Ionic Liquid Phase (SILP) Katalysatoren BMBF Project FKZ 033RC1107 Project Coordinator: Dr. Hanna Hahn, Evonik Industries AG Project Partner: Friedrich-Alexander-Universität Erlangen-Nürnberg, Technische Universität Darmstadt 3.11.1 Introduction Hydroformylation is one of the most important homogenously catalysed reactions in the chemical industry. The reaction involves the conversion of olefins, carbon monoxide and hydrogen on transition metal complexes to produce linear and branched aldehydes (see Figure 100). Catalysator Aldehydes are important intermediates in the petrochemical value-creation chain and find use, for example, in the synthesis of plasticisers. The produc- tion capacity of these ‘oxo products’ is several tens of millions of metric tons per year. [1] Hydroformylation is thus an industrially relevant process in the chemical value chain and is currently one of the few large-scale homogene- ously catalysed processes used in the production of bulk chemicals. The cru- cial factors that generally determine the cost efficiency of a homogeneously catalysed process are separating and recovering the catalyst and preventing the formation of secondary products. Using coordinating ligands can signif- icantly increase the activity and selectivity of a homogeneous catalyst under relatively mild reaction conditions. Disadvantages of homogenous catalysis are the high catalyst costs and the complexity of separating the products from the catalyst. In heterogeneous catalysis, loss of catalyst and the costs that this entails are far lower than in homogeneous catalysis and the cat- alyst can usually be used for longer periods before needing to be replaced. However, heterogeneous catalysts typically exhibit lower chemoselectivity and regioselectivity. Immobilising the homogenous catalysts used in hy- droformylation would enable the advantages of homogeneous and heter- Fig.100: Hydroformylation of olefins to yield linear and branched aldehydes 255PDF Image | Chemical Processes and Use of CO2
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