Catalytic performance of bulk and La2O3-supported strontium oxide as a novel bifunctional catalyst for biodiesel production from sunflower oil

AL-Bayati B. B., ÖZDEMİR O. K., Khudhur A. G., ÖZDEMİR J. H., Hantosh A. A., Al-Sheikh F.

International Journal of Green Energy, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1080/15435075.2026.2638985
  • Dergi Adı: International Journal of Green Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Environment Index, Geobase, Greenfile, INSPEC
  • Anahtar Kelimeler: bifunctional, Biodiesel, biofuel, strontium oxide, sunflower oil, transesterification
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

A SrO/La2O3 catalyst was prepared by physical ball-milling to improve stability and reusability in biodiesel production via transesterification. Characterization by XRD, FTIR, FESEM-EDX, and BET confirmed the catalyst properties. Optimized reaction conditions (Me: Oil ratio of 12:1, 1 wt% catalyst, 65°C, 30 min) using the 3 SrO/La2O3 catalyst calcined at 800°C achieved a maximum FAME yield of 98.6%. The catalyst maintained good reusability, with yield decreasing to 87% after three cycles. Biodiesel quality met ASTM D 6751 standards as confirmed by GC-MS and FTIR analysis. This work demonstrates the potential of SrO/La2O3 as a promising catalyst for efficient biodiesel synthesis.