Strontium zirconate and hydroxide matrices with high performance as heterogeneous catalyst for biodiesel production
Strontium Zirconate (ZrSrO3) and hydroxide (Sr(OH2)) were synthesized, characterized and investigated as catalyst for preparing biodiesel. Both matrices were characterized by SEM, XRD, FTIR, TG and BET. Vegetable oil and methanol were used to prepare biodiesel and reaction conditions optimized by experimental design. Analysis showed that ZrSrO3 matrix sample, synthesized by citrate route, is composed by ZrSrO3, Zr0.93O2, SrCO3, Sr(OH)2, and Sr(OH)2.H2O phases. ZrSrO3 used as catalyst produced high ester content biodiesel, 98.0%.