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H2-free decarboxylation of plant-oil-residues: Catalyst performance and re-activation

: Heil, V.; Kraft, A.; Menne, A.; Unger, C.A.; Fastabend, A.; Meller, K.; Juricev-Spiric, M.; Durgut, E.; Pablo, J.; Ruiz, Z.


Hoffmann, C. ; ETA-Renewable Energies, Florence:
22nd European Biomass Conference and Exhibition, EU BC&E 2014. Online proceedings : Hamburg, Germany, 23 - 26 June 2014, Setting of course for a biobased economy
Florence: ETA, 2014
ISBN: 978-88-89407-52-3
European Biomass Conference and Exhibition (EU BC&E) <22, 2014, Hamburg>
Conference Paper
Fraunhofer UMSICHT Oberhausen ()

Hydrogen-free, ambient-pressure decarboxylation over activated carbon, also called Gas-phase heterogeneous Catalytic Cracking (GCC), produces fuel-blending hydrocarbon liquids from bio-based waste oils and fats. In bench-scale, up to 80 % energetic yield of liquid product was achieved. Coke formation and blocking of pores lead to a demand of 0.15 g of activated carbon per g feedstock. Re-activation by targeted gasification reactions inside the pores turned out to be suitable for reestablishing the pore system and regaining a 'catalyst' suitable for the decarboxylation process. Nine cycles of catalyst usage and re-activation were performed without any negative implications on catalyst performance.