Research Article
Biomass Derivative Valorization Using Nano Core-Shell Magnetic Materials Based on Keggin-Heteropolyacids: Levulinic Acid Esterification Kinetic Study with N-Butanol
Figure 6
Potentiometric titration curves for Fe3O4@SiO2, Fe3O4@SiO2@SiO2/TPA400N2, and Fe3O4@SiO2@SiO2/TPA400N2C1 solids.