Fuel Processing Technology· 2026Q1
Optimization of biodiesel production via oleic acid esterification over a novel NiMoO4 catalyst supported on functionalized lightweight expanded clay aggregate (LECA)
- 1citations
- Q1SCImago
- 2026year
Short summary
A new nickel molybdate catalyst on functionalized clay (NiMoO4-f-LECA) achieved 90.17% oleic acid to biodiesel conversion, outperforming previous methods.
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Key points
- A novel NiMoO4-f-LECA catalyst was synthesized for oleic acid esterification.
- The catalyst has a surface area of 28.20 m²/g and strong acid sites.
- Optimized conditions (100 °C, 3 h, 20:1 methanol ratio, 1.05 wt% catalyst) yielded 90.17% biodiesel conversion.
- The quadratic model predicting conversion had a high precision (R² = 0.9797).
AI-generated from the title and abstract; the full text is not read.
Abstract
This study evaluates a nickel molybdate catalyst supported on functionalized lightweight expanded clay aggregate NiMoO 4 -f-LECA synthesized via a microwave-assisted route for biodiesel production. Characterization confirmed the successful dispersion of NiMoO4 nanoparticles, yielding a hierarchically porous solid acid catalyst with a surface area of 28.20 m 2 /g, pore volume of 0.121 cm 3 /g, and strong acid sites (NH 3 -TPD peak at 596.5 °C). Response Surface Methodology (RSM) based on a Box-Behnken design optimized the esterification of oleic acid across four variables: temperature (90–110 °C), time (1−3 h ), methanol-to-oil ratio (12:1–20:1), and catalyst dosage (1–5 wt%). The developed quadratic model showed high precision (R2 = 0.9797). Under optimal conditions (100 °C, 3 h, 20:1 M ratio, and 1.05 wt% catalyst), a maximum biodiesel conversion of 90.17% was achieved, closely matching experimental validation. The NiMoO 4 -f-LECA catalyst represents a cost-effective, highly efficient, and sustainable route for scalable biodiesel synthesis.
The authors' abstract, as published at the source. Fuel Processing Technology, 2026 · DOI ↗
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