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Continuous catalytic hydrodeoxygenation of guaiacol over Pt/SiO₂ and Pt/H-MFI-90

Hellinger, M. 1,2; Baier, S. 2; Mortensen, P. M.; Kleist, W. 1,2; Jensen, A. D.; Grunwaldt, J.-D. ORCID iD icon 1,2
1 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)

Abstract:

Hydrodeoxygenation of guaiacol in the presence of 1-octanol was studied in a fixed-bed reactor under mild conditions (50-250 °C) over platinum particles supported on silica (Pt/SiO2) and a zeolite with framework type MFI at a Si/Al-ratio of 45 (Pt/H-MFI-90). The deoxygenation selectivity strongly depended on the support and the temperature. Both guaiacol and octanol were rapidly deoxygenated in the presence of hydrogen over Pt/H-MFI-90 at 250 °C to cyclohexane and octane, respectively. In contrast, Pt/SiO2 mostly showed hydrogenation, but hardly any deoxygenation activity. The acidic sites of the MFI-90 support lead to improved deoxygenation performance at the mild temperature conditions of this study. Significant conversions under reaction conditions applied already occurred at temperatures of 200 °C. However, during long-term stability tests, the Pt/H-MFI-90 catalyst deactivated after more than 30 h, probably due to carbon deposition, whereas Pt/SiO2 was more stable. The catalytic activity of the zeolite catalyst could only partly be regained by calcination in air, as some of the acidic sites were lost.

Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2073-4344
urn:nbn:de:swb:90-483894
KITopen-ID: 1000048389
HGF-Programm 35.13.03 (POF III, LK 01) Behandlung und Veredelung
Erschienen in Catalysts
Verlag MDPI
Band 5
Heft 3
Seiten 1152-1166
Schlagwörter continuous process; guaiacol; hydrodeoxygenation; 1-octanol; Pt catalysts; zeolites; bio-oil upgrading
Nachgewiesen in OpenAlex
Web of Science
Scopus
Dimensions
Globale Ziele für nachhaltige Entwicklung Ziel 6 – Sauberes Wasser und Sanitär-Einrichtungen

Verlagsausgabe §
DOI: 10.5445/IR/1000048389
Veröffentlicht am 19.07.2018
Originalveröffentlichung
DOI: 10.3390/catal5031152
Scopus
Zitationen: 31
Web of Science
Zitationen: 31
Dimensions
Zitationen: 31
Seitenaufrufe: 230
seit 17.05.2018
Downloads: 272
seit 26.07.2018
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