Carbon support effects on metal (Pd, Pt and Ru) catalyzed hydrothermal decarboxylation/deoxygenation of triglycerides
2022 (English)In: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 638, article id 118611Article in journal (Refereed) Published
Abstract [en]
Herein, we show that textural properties of carbon supports have limited influence on the activity and stability of carbon supported Pd, Pt and Ru catalysts upon decarboxylation of a model triglyceride (tristearin) in the presence of subcritical water (256–326 °C). In contrast, surface acid-base properties of carbon supports were found to have a marked impact on the performance and stability of these catalysts. More precisely, for Pt group (Pt and Pd) a positive correlation could be observed between the concentration of surface basic sites and catalyst deoxygenation activity and durability while acid sites had the opposite effect. On the other hand, the activity of Ru-based catalysts were not analogously affected by the acid-base properties of carbon supports, even so a positive correlation was found between surface basicity and durability (reusability). Further, the activity of metals in decreasing order of TOF was Ru>Pt>Pd, irrespective of carbon support.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 638, article id 118611
Keywords [en]
Catalyst deactivation, Green diesel, Hydrothermal deoxygenation/decarboxylation, Ru-based catalysts, Supported carbon catalysts
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-194886DOI: 10.1016/j.apcata.2022.118611ISI: 000795542400002Scopus ID: 2-s2.0-85129349543OAI: oai:DiVA.org:umu-194886DiVA, id: diva2:1665400
Funder
The Kempe FoundationsBio4Energy2022-06-072022-06-072023-03-24Bibliographically approved