Influence of Nickel Loading and the Synthesis Method on the Efficiency of Ni/TiO2 Catalysts for Renewable Diesel Production

Autor: George Petropoulos, John Zafeiropoulos, Eleana Kordouli, Alexis Lycourghiotis, Christos Kordulis, Kyriakos Bourikas
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Energies, Vol 16, Iss 11, p 4333 (2023)
Druh dokumentu: article
ISSN: 1996-1073
52500519
DOI: 10.3390/en16114333
Popis: The efficiency of Ni/TiO2 catalysts for renewable diesel production was evaluated in the present study. Two series of catalysts were synthesized and characterized using various physicochemical techniques (N2 physisorption, XRD, SEM, XPS, H2-TPR, and NH3–TPD). In the first series of catalysts, successive dry impregnations (SDI) were used for depositing 10, 20, 30, 50, and 60 wt.% Ni. The yield towards renewable diesel is maximized over the catalyst with 50 wt.% Ni loading. Selecting this optimum loading, a second series of catalysts were synthesized via three additional preparation methods: wet impregnation (WI) and deposition–precipitation using either ammonia (DP-NH3) or urea (DP-Urea) as the precipitation agent. The catalysts’ efficiency in the production of green diesel is influenced by the preparation method following the order: DP-Urea > DP-NH3 > WI ≈ SDI. The metallic surface area and the balanced acidity mainly determine the performance of the catalysts.
Databáze: Directory of Open Access Journals
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