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Synthesis and Regeneration of Nickel-Based Catalysts for Hydrodeoxygenation of Beech Wood Fast Pyrolysis Bio-Oil

Carriel Schmitt, Caroline; Gagliardi Reolon, María; Zimmermann, Michael; Raffelt, Klaus; Grunwaldt, Jan-Dierk; Dahmen, Nicolaus

Abstract:
Four nickel-based catalysts are synthesized by wet impregnation and evaluated for the hydrotreatment/hydrodeoxygenation of beech wood fast-pyrolysis bio-oil. Parameters such as elemental analysis, pH value, and water content, as well as the heating value of the upgraded bio-oils are considered for the evaluation of the catalysts’ activity and catalyst reuse in cycles of hydrodeoxygenation after regeneration. The reduction temperature, selectivity and hydrogen consumption are distinct among them, although all catalysts tested produce upgraded bio-oils with reduced oxygen concentration, lower water content and higher energy density. Ni/SiO2, in particular, can remove more than 50% of the oxygen content and reduce the water content by more than 80%, with low coke and gas formation. The evaluation over four consecutive hydrotreatment reactions and catalyst regeneration shows a slightly reduced hydrodeoxygenation activity of Ni/SiO2, mainly due to deactivation caused by sintering and adsorption of poisoning substances, such as sulfur. Following the fourth catalyst reuse, the upgraded bio-oil shows 43% less oxygen in comparison to the feedstock and properties comparable to the upgraded bio-oil obtained with the fresh catalyst. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000086788
Veröffentlicht am 22.10.2018
Originalveröffentlichung
DOI: 10.3390/catal8100449
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Coverbild
Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Mikrostrukturtechnik (IMT)
Institut für Katalyseforschung und -Technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2073-4344
urn:nbn:de:swb:90-867881
KITopen-ID: 1000086788
HGF-Programm 35.13.03 (POF III, LK 01)
Erschienen in Catalysts
Band 8
Heft 10
Seiten Article: 449
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.10.2018
Schlagworte hydrodeoxygenation; fast-pyrolysis bio-oil; nickel catalyst; upgrading
Nachgewiesen in Web of Science
Scopus
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