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Catalytic hydrodeoxygenation of pyrolysis oil over nickel-based catalysts under H2/CO2 atmosphere

Olbrich, Wolfgang; Boscagli, Chiara; Raffelt, Klaus; Zang, Hao; Dahmen, Nicolaus; Sauer, Jörg ORCID iD icon



Renewable feedstocks and bio-refinery concepts are the key to a successful transition to a sustainable chemical industry. One conceivable refinery concept is based on pyrolysis oils from biomass, though these oils are quite difficult to handle. A well investigated approach to upgrade pyrolysis oil and turn it into a valuable products is catalytic hydrodeoxygenation (HDO). However, this process has to be optimized and new ideas are needed to make the hydrodeoxygenation process attractive sustainable and economically competitive. With regard to the many successful applications of gas-expanded liquids in heterogeneous catalysis, the expansion of pyrolysis oil with carbon dioxide was applied in the context of a hydrodeoxygenation reaction. The catalyst used for HDO was Ni/Al2O3 (nickel loading 20 %wt).


The influence of CO2 on the viscosity was found to be quite strong at low temperature. At 52 °C and a CO2 pressure of 0.5 MPa the viscosity is reduced by 30 %. With 4.0 MPa of CO2 the viscosity decreases by 60 %. With supercritical CO2 a volume expansion of 5 % was observed. The hydrodeoxygenation showed best results at 340 °C and autogenous pressure. ... mehr

Volltext §
DOI: 10.5445/IR/1000067909
DOI: 10.1186/s40508-016-0053-x
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 2043-7129
KITopen-ID: 1000067909
HGF-Programm 35.13.02 (POF III, LK 01) Konversion
Erschienen in Sustainable Chemical Processes
Verlag Springer Verlag
Band 4
Heft 1
Seiten 9
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter Hydrodeoxygenation; Pyrolysis oil Nickel-based catalyst; Gas-expanded liquid; Carbon dioxide
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