Potential of Nb2O5 as a Catalyst in Biodiesel Production: A Study with Different Feedstock

Molecules, Год журнала: 2025, Номер 30(5), С. 1075 - 1075

Опубликована: Фев. 26, 2025

The objective of this study was to evaluate the catalytic performance commercial Nb2O5, supplied by CBMM, in production biodiesel transesterification and esterification, using different feedstocks (soybean, corn, sunflower, waste oils) both methyl ethyl routes. For this, catalyst characterized terms its crystal structure X-ray diffraction (XRD), specific surface area Brunauer-Emmett-Teller (BET) technique, thermal stability thermogravimetric analysis (TGA), morphology scanning electron microscopy (SEM), acidity ammonia desorption at programmed temperature (TPD-NH3), activity gas chromatography. results from structural analyses indicated that Nb2O5 has a single monoclinic phase consisting irregular agglomerates. 1.3 m2/g, density 4.639 g/cm3. showed material stability, maintaining integrity up temperatures as high 1000 °C. total reached 301 μmol NH3/g, indicating presence Brønsted Lewis acidic sites. In tests, higher efficiency route, achieving an initial conversion 96.43% esters with soybean oil, outperforming other feedstocks. However, reuse over five cycles revealed progressive decrease activity, possibly due blocking active sites adsorbed products, confirmed FTIR XRD conducted on catalyst. Despite decreased after cycles, maintained structure, stability. These demonstrate potential heterogeneous for production, particularly route high-quality oils. This highlights relevance synthesis, contributing sustainable practices technological advancement renewable energy sector.

Язык: Английский

Breaking Barriers in Biodiesel: From Feedstock Challenges to Technological Advancements

Chemistry Africa, Год журнала: 2025, Номер unknown

Опубликована: Май 3, 2025

Язык: Английский

Engine performance and emission optimization with waste cooking oil biodiesel/diesel blend using ANN and RSM techniques coupled with ACKTR-DE and HHO algorithms

BMC Chemistry, Год журнала: 2025, Номер 19(1)

Опубликована: Май 22, 2025

Язык: Английский