Strontium zirconate and hydroxide matrices with high performance as heterogeneous catalyst for biodiesel production
International Journal of Development Research
Strontium zirconate and hydroxide matrices with high performance as heterogeneous catalyst for biodiesel production
Received 09th January, 2021; Received in revised form 04th February, 2021; Accepted 11th March, 2021; Published online 13th April, 2021
Copyright © 2021, Fernando Alberto Souza Lima and Andréa Bittencourt Pires Chaves. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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%. (OH)-matrix, obtained by co-precipitation, presented low solubility in methanol and best performance than ZrSrO3, because 97.6% of ester was obtained using less catalyst and a shorter time to react. When using ethanol as reactant, SrOH-matrix presented results in ester yield around 90%, while ZrSrO3-matrix produced only 9%. A comparison between both matrices recommend us to adopt strontium-matrix as a promising novel and efficient heterogeneous base catalyst to biodiesel production.
