TY - JOUR AB - A bimetallic alkaline earth metal-transition metal oxide, synthesized through a method of direct low-temperature decomposition of the bimetallic complex, is reported for the synthesis of biodiesel. Due to the high phase purity of the Ca/Fe catalytic system and its catalytic stability and robustness, the Ca/Fe catalyst was selected for further investigation. A transesterification conversion of 99.5% could be achieved in 1 h under the optimal conditions: feedstock to methanol, 1 : 20; catalyst loading, 6 wt%; temperature, 120 degrees C. ANOVA tests suggested that the reaction temperature was discerned as the most prominent factor which contributed 82.84% to the overall catalytic feedstock conversion. In addition, the Ca/Fe catalytic system demonstrated a high FFA tolerance of 2 wt% and a water tolerance of 1 wt% with remarkable catalytic activity in one-step biodiesel synthesis. AD - Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China AN - WOS:000362752400025 AU - Kwong, T. L. AU - Yung, K. F. DO - 10.1039/c5ra13819a IS - 102 J2 - Rsc Adv KW - acid modified zirconia LA - English N1 - Ct4cb PY - 2015 SN - 2046-2069 SP - 83748-83756 ST - Heterogeneous alkaline earth metal-transition metal bimetallic catalysts for synthesis of biodiesel from low grade unrefined feedstock T2 - Rsc Advances TI - Heterogeneous alkaline earth metal-transition metal bimetallic catalysts for synthesis of biodiesel from low grade unrefined feedstock UR - ://WOS:000362752400025 VL - 5 ID - 11441 ER -