2018 - Sustainable Industrial Processing Summit & Exhibition
4-7 November 2018, Rio Othon Palace, Rio De Janeiro, Brazil
| Homogeneous Catalysis for Sustainable Chemistry Martin Nielsen1; 1TECHNICAL UNIVERSITY OF DENMARK, Kgs. Lyngby, Denmark; PAPER: 137/Molten/Invited (Oral) SCHEDULED: 11:20/Wed./Bossa (150/3rd) ABSTRACT: The transformation of biofeedstock into higher value bulk and fine chemicals is of paramount importance to become fully independent of fossil fuels. Using homogeneous catalysis for such valorization processes allows for highly selective transformation to be carried out under mild conditions. Here, we demonstrate the use of homogeneous PNP transition metal complexes for catalyzing a range of biofeedstock valorization processes. In addition, we show how this catalyst type may be used for hydrogen storage in organic compounds. For example (bio)ethanol may be transformed to to sodium acetate, ethyl acetate, or butanol. Likewise, potassium lactate is produced from glycerol and gamma-valerolactone is made from levulinates. Furthermore, we show how methanol, (bio)ethanol, isopropanol, glycerol, sugar alcohols, and carbohydrates all are well tolerated substrates for extruding hydrogen molecules. References: [1] R. M. Padilla, M. Nielsen. Unpublished work. [2] E. Alberico, M. Nielsen. 2015. Towards a methanol economy based on homogeneous catalysis: methanol to H2 and CO2 to methanol Chem. Commun., 51, 6714-6725 [3] M. Nielsen, E. Alberico, W. Baumann, H.-J. Drexler, H. Junge, S. Gladiali, M. Beller 2013, Low-temperature aqueous-phase methanol dehydrogenation to hydrogen and carbon dioxide, Nature, 495, 85-89 [4] M. Nielsen, H. Junge, A. Kammer, M. Beller 2012, Towards a Green Process for Bulk-Scale Synthesis of Ethyl Acetate: Efficient Acceptorless Dehydrogenation of Ethanol, Angew. Chem. Int. Ed., 51, 5711-5713 |
